highaltitude.log.20150308

[00:00] <amell> noticed a sat tracker was added to snus
[00:00] <amell> can someone explain the significance of the circles around the sat, seems to be 60, 45, 30, 15 degrees
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[00:25] <vk3bq> so close to a full decode andy
[00:25] <vk3bq> been audible for near on 1hr
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[00:31] Nick change: fl_0 -> fl_0|afk
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[01:10] <lz1dev> amell: if you are unside the 15 degree circle, the sat will be 15 degree above the horizon
[01:10] <lz1dev> inside8
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[01:16] <Darkside> !whereis PS-3
[01:16] <SpacenearUS> 03Darkside: I haven't got a clue
[01:16] <Darkside> !whereis PS-37
[01:16] <SpacenearUS> 03Darkside: 03PS-37 is over 03New South Wales, Australia 10(-35.7566,146.3595) at 0318951 meters
[01:19] <vk3bq> good decodes on ps-37 at 270km now
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[03:21] <vk3bq> PS37 just popped. on the way down
[03:22] <vk3bq> 40903 meters up, australian record
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[06:23] <SpacenearUS> New vehicle on the map: 03VEGA-I_chase - 12http://tracker.habhub.org/#!qm=All&q=VEGA-I_chase
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[08:47] <Ian_> Congrats to the Antipodean VK away team with their PS37 flight achievment. Bonza Bro.
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[08:54] <SpacenearUS> New position from 03SP9UOB-11 after 0317 hours silence - 12http://tracker.habhub.org/#!qm=All&q=SP9UOB-11
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[09:13] <SpacenearUS> New vehicle on the map: 030x05 - 12http://tracker.habhub.org/#!qm=All&q=0x05
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[09:29] <DutchMillbt> Moring DN4GB-11 launched.... see aprs.fi
[09:29] <thasti> 0x05 is up! 434.575 in eastern germany RTTY 100bd/400Hz 7N2
[09:31] <DutchMillbt> Morning tasti.. yup i see but out of range for me... have a nice flight
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[09:35] <thasti> DutchMillbt: nice :)
[09:36] <thasti> what's your location?
[09:37] <lz1dev> !aprs find DN4GB-11
[09:37] <SpacenearUS> 03lz1dev: Error: 'utf8' codec can't decode byte 0xb0 in position 43: invalid start byte
[09:37] <PE2G> I have RTTY at 600 bd on 434.650, no c/s decoded yet
[09:37] <lz1dev> sigh :\
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[09:41] <lz1dev> oh i see, its being matches as a sonde :)
[09:41] <lz1dev> !aprs add DN4GB-11
[09:41] <SpacenearUS> 03lz1dev: Added 03DN4GB-11 to APRS Importer
[09:42] <DutchMillbt> Hi thasti my location is JO21cx 20 km zw of Rotterdam
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[09:49] <SpacenearUS> New vehicle on the map: 03DN4GB-11 - 12http://tracker.habhub.org/#!qm=All&q=DN4GB-11
[09:51] <SpacenearUS> New position from 03SP5NVX after 0312 days silence - 12http://tracker.habhub.org/#!qm=All&q=SP5NVX
[09:52] <PE2G> No position information and c/s in the RTTY on 434.650
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[09:52] <DutchMillbt> yep just ssdv
[09:53] <PE2G> Are you able to decode the SSDV, DutchMillbt?
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[09:55] <DutchMillbt> Morning PE2G yes but with a few interruptions du to qrm
[09:56] <PE2G> Morning. What are yr RTTY settings pls?
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[09:57] <Reb-SM0ULC> nirrb
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[09:57] <DutchMillbt> Mode: RTTY, 600 baud, 610hz Shift, n8, no parity, 1 stop bits
[09:57] <Reb-SM0ULC> DO9 trying to set new record for low level flight? ;)
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[09:58] <DutchMillbt> PE2G correction the shift is +/- 550
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[10:00] <PE2G> Tnx, DutchMillbt, and you can view SSDV imagery?
[10:01] <DutchMillbt> Yes but not complete
[10:02] <fsphil> http://ssdv.habhub.org/
[10:02] <fsphil> lots of missing packets
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[10:03] <DutchMillbt> ..mm lost signal due to qrm or by some kind of problem
[10:03] <fsphil> needs a few more receivers
[10:07] <fsphil> nobody in germany receiving it?
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[10:15] <DJ3AK> receiving 0x05 nw, not yet green decode
[10:15] <Reb-SM0ULC> should be plenty of possible reeivers for 0x05?
[10:16] <DJ3AK> looks like it, yes
[10:17] <DutchMillbt> DJ3AK can you try DN4GB-11@ 434.650 MHz SSDV?
[10:18] <fsphil> yay complete image
[10:18] <fsphil> camera pointed down, interesting
[10:19] <PE2G> I seem to be uploading data, but no message in dl-fldigi thtat it's doing so.
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[10:22] <PE2G> I need 460 Hz Shift to get decodes
[10:23] <fsphil> you're doing well now
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[10:24] <DJ3AK> first green for 0x05 here
[10:25] <PE2G> sphil: Yes, but it's not working like I'm used to.
[10:25] <bertrik> !payload DN4GB-11
[10:25] <SpacenearUS> 03bertrik: Can't find a flight doc matching your query
[10:26] <SP9UOB-Tom> how to request hysplit for sp9uob-11 ?
[10:26] <fsphil> PE2G: interference, or a problem with the payload signal?
[10:26] <DL1SGP> morning
[10:27] <fsphil> oh a bit of horizon in this pic
[10:28] <DutchMillbt> back in town ...the qrm is gone
[10:28] <PE2G> I believe something isn't quite right with dl-fldigi here. Running on Xubuntu.
[10:29] <DL1SGP> !payload 0x05
[10:29] <SpacenearUS> 03DL1SGP: Payload 030x05 10(bc43) 03$$0x05 - 03RTTY, once every 20sec, preceeded by 1sec beep on higher FSK frequency - 03434.075 MHz USB 03RTTY 100/400Hz ASCII-7 none 2
[10:29] <DJ3AK> 0x05 transmits on 434.574.0 USB 100 Bd / 400 Hz 7N2
[10:31] <Geoff-G8DHE> Can just se DN4GB-11 in the w/f here now
[10:32] <DJ3AK> DN4GB-11 is strong here but waht Mode?
[10:32] <Geoff-G8DHE> Mode: RTTY, 600 baud, 610hz Shift, n8, no parity, 1 stop bits
[10:32] <DutchMillbt> SSVD 600bd 550 shift
[10:33] <DutchMillbt> ssdv
[10:33] <Geoff-G8DHE> Shift is yes a bit less than advertised
[10:33] <PE2G> I need 460 shift, receive filter bandwidth 400 Hz
[10:33] <DutchMillbt> DJ3AK : https://groups.google.com/forum/#!topic/ukhas/kSwfWMxnExc
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[10:36] <DJ3AK> thank you for all the info. receiving SSDV picture now
[10:37] <DutchMillbt> nice work DJ3AK
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[10:37] <fsphil> ah being received in england now
[10:37] Nick change: dbrooke -> db_g6gzh
[10:37] <db_g6gzh> got one!
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[10:38] <fsphil> there's that lake again
[10:38] <db_g6gzh> it's a nice signal but a bit narrow
[10:38] <fsphil> noticibly smaller
[10:39] <Geoff-G8DHE> Ah burst it sdeems
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[10:47] <PD5TON> payload 0x05 ?
[10:48] <Geoff-G8DHE> !flight 0x05
[10:48] <SpacenearUS> 03Geoff-G8DHE: Flight 10(bc43): 030x05 - Pico Flight 10(1 payload) - Launch date 03Today at 09:00 from 03Thuringia, Germany 10(50.86732,11.96714)
[10:48] <Geoff-G8DHE> !payload 0x05
[10:48] <SpacenearUS> 03Geoff-G8DHE: Payload 030x05 10(bc43) 03$$0x05 - 03RTTY, once every 20sec, preceeded by 1sec beep on higher FSK frequency - 03434.075 MHz USB 03RTTY 100/400Hz ASCII-7 none 2
[10:48] <Geoff-G8DHE> !dial 0x05
[10:48] <SpacenearUS> 03Geoff-G8DHE: Latest dials for 030x05 10(bc43): 031 MHz, 100 MHz, 434.575 MHz, 434.573 MHz, 434.224 MHz
[10:49] <DJ3AK> 0x05 transmits on 434.574.0 USB 100 Bd / 400 Hz 7N2
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[10:57] Nick change: fl_0|afk -> fl_0
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[11:00] <AdamDynamic> I need to build my own receiver for my Pi In The Sky tracker, I have a TV dongle but I need an aerial - does anyone have any recommendations?
[11:02] <SpeedEvil> What are you going to be doing with it?
[11:02] <Vaizki> magmount 433MHz antenna and a yagi for rdf I guess?
[11:02] <SpeedEvil> For testing - practically anything will work
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[11:03] <AdamDynamic> I need one for the 'chase car'
[11:03] <AdamDynamic> (Beginner question, but what is a 'yagi'?)
[11:04] <fsphil> http://cpc.farnell.com/watson/wsm-270/wsm-270-mini-mag-antenna/dp/IT44456 is handy for the chase car
[11:04] <Vaizki> AdamDynamic: http://en.wikipedia.org/wiki/Yagi-Uda_antenna
[11:04] <SpeedEvil> A yagi is an antenna like you used to see on houses for TV
[11:04] <SpeedEvil> until everyone got netflix
[11:04] <Vaizki> yagi has a single active element and a bunch of reflecting ones, it's basically a directional antenna with good gain
[11:05] <AdamDynamic> Ah ok, so I need two?
[11:05] <pc1pcl> for the chase car you want something omnidirectional that you can put on the roof though
[11:05] <AdamDynamic> Would the antenna for the chase car not work for both?
[11:05] <SpeedEvil> I prefer Ulam-teller. Much more gain.
[11:05] <Vaizki> so not only does it receive the signal better but when you don't have enough signal to decode RTTY you will be able to swing the yagi around and find the signal direction
[11:06] <Vaizki> SpeedEvil: let me know when you launch, I'll be in my cellar
[11:07] <Vaizki> but yes, you definitely don't want to drive around with a yagi :)
[11:07] <AdamDynamic> Yeah, can imagine one of them being difficult to handle in my Fiat 500 :)
[11:12] <AdamDynamic> So (to ask another stupid question) - is the Yagi what I would keep at wherever my 'ground station' was, and the mobile antenna what I would use to track the payload from my laptop in the chase car?
[11:14] <pc1pcl> More or less, although a yagi can come in handy when you've parked near where the payload came down and try to find it on foot.
[11:15] <fsphil> PE2G: nice, you're still getting it
[11:15] <AdamDynamic> Yeah, I've just googled 'RDF' and that seemed to make sense
[11:15] <PE2G> Yes, signal still S9
[11:15] <AdamDynamic> (On a pretty steep learning curve with this :)
[11:16] <fsphil> the images look like it's lower than 6km
[11:16] <AdamDynamic> Any recommendations on a Yagi then? (And I'm assuming I would need more than just the aerial? Would this work with the TV dongle too?)
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[11:20] <PE2G> I lost DN4GB
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[11:21] <PE2G> !dial 0x05
[11:21] <SpacenearUS> 03PE2G: Latest dials for 030x05 10(bc43): 031 MHz, 100 MHz, 434.575 MHz, 434.224 MHz, 434.573 MHz
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[11:25] <fsphil> that's alarmingly close to those lakes
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[11:32] <Lunar_Lander> hello
[11:33] <fsphil> morning
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[11:45] <niks> ?
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[11:53] <niks> !flight
[11:53] <SpacenearUS> 03niks: Can't find a flight doc matching your query
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[12:01] <Geoff-G8DHE-Lap> !flights
[12:01] <SpacenearUS> 03Geoff-G8DHE-Lap: Current flights: 03PS-37 RTTY100 450Hz shift 8,1,N enable RSID 10(b100), 03MM3 10(e4ea), 03SP5NVX 10(3100), 030x05 - Pico Flight 10(bc43), 03SP9UOB - 144.250 MHz (434,500 where ham not allowed) 10(b615)
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[12:23] <niks> !flights
[12:23] <SpacenearUS> 03niks: Current flights: 03PS-37 RTTY100 450Hz shift 8,1,N enable RSID 10(b100), 03MM3 10(e4ea), 03SP5NVX 10(3100), 030x05 - Pico Flight 10(bc43), 03SP9UOB - 144.250 MHz (434,500 where ham not allowed) 10(b615)
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[12:50] <Flerb_> My PCBs turned up the other day
[12:50] <Flerb_> took about a month
[12:52] <Flerb_> unfortunately swiss post seems to think that tracking means saying when an item is dispatched and when it is delivered
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[13:36] <infaddic_> going back to basic with a clean breadboard to try fix my tx/rx bad decoding issues. does the NTX2B defo require a 100K resistor to pin 7 (TXD)? datasheet mentions it but some walkthroughs (inc on UKHAS) don't have one.
[13:37] <thasti> 0x05 now on the highway back to the launch site :p
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[13:40] <mfa298> infaddic_: that depends on how you're driving it.
[13:40] <infaddic_> from pin 3 on a arduino mini pro 3.3V
[13:41] <mfa298> the input for the ntx2b is 0-3V for it's complete range, the suggested values in the datasheet are assuming you drive it in particular ways
[13:43] <mfa298> if you're doing pwm them you may not require any resistor. If you're just switching the pin on and off (as per the older examples on ukhas) then you need a resistor network to generate the shift
[13:46] <infaddic_> thx mfa298. i am using PWM on pin 3, plus a ISR timer to trigger by tx.
[13:46] <infaddic_> i will try without resistor as my analogWrites are not close to the maximum
[13:46] <infaddic_> wonder if that was my problem
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[13:52] <infaddic_> wow the waterfall is SOOOO much cleaner without that resistor
[13:52] <infaddic_> test beacon is now perfect with 0 bad chars
[13:52] <infaddic_> gonna move back to main board to get proper sentences (without resistor) and see if that fixes it there
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[14:06] <seventeen_> 13:43 < mfa298> if you're doing pwm them you may not require any resistor. If you're just switching the
[14:07] Last message repeated 1 time(s).
[14:07] <seventeen_> oops
[14:10] <Ian_> Just seventeen, you know what I mean and the way he types is way beyond compare, so how could I read from another . . .
[14:10] <Ian_> :)
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[14:52] <DL1SGP> !payload PS-36
[14:52] <SpacenearUS> 03DL1SGP: Can't find a flight doc matching your query
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[15:17] <SpacenearUS> New vehicle on the map: 03KD9AUK-11 - 12http://tracker.habhub.org/#!qm=All&q=KD9AUK-11
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[15:28] <SpacenearUS> New vehicle on the map: 03NN9PQ_chase - 12http://tracker.habhub.org/#!qm=All&q=NN9PQ_chase
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[15:32] <SpacenearUS> New vehicle on the map: 03DO2EIM-1 - 12http://tracker.habhub.org/#!qm=All&q=DO2EIM-1
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[16:27] <Guest40761> bye
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[17:09] <SpacenearUS> New vehicle on the map: 03KG5FKB-11 - 12http://tracker.habhub.org/#!qm=All&q=KG5FKB-11
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[17:18] <NormanOK> these new silicon labs EZR32 ICs look great: http://www.silabs.com/products/wireless/wirelessmcu/Pages/ezr32wg-wireless-mcu.aspx
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[17:30] <infaddict> afternoon. any reason why writing to SD card would interfere with radio TX? after hours of testing I've narrowed down my random bad chars in sentence to happening with SD logging enabled!!
[17:31] <infaddict> if i comment out the lines opening and writing to SD card, my TX/RX success is > 95%. with SD write its < 20%
[17:31] <chrisstubbs> infaddict, in a pi?
[17:31] <chrisstubbs> *on
[17:31] <infaddict> nope chrisstubbs, its arduino mini pro (3.3V 8Mhz).
[17:32] <chrisstubbs> How are you doing your rtty, with a delay or interrupt?
[17:32] <infaddict> interrupt driven with ISR firing at 50Hz. TX via PWM on pin 3.
[17:33] <infaddict> today i've gone right back to basics and built up the code piece by piece to see what on earth was causing the bad chars
[17:33] <infaddict> its working very well unless sd card is in the picture
[17:34] <infaddict> i am only writing to SD card every 3 seconds (when GPS returns data). yet with it included it breaks the radio part.
[17:34] <chrisstubbs> my guess would be writing to the SD card somehow stops the ISR (which I dont think should happen?)
[17:34] <chrisstubbs> or you are running out of memory?
[17:34] <infaddict> yer, sometimes i get 1 char skipped, other times i get a bogus char in its place. at random places in the string.
[17:35] <chrisstubbs> Or when you write to the SD card the voltage dips on the power supply
[17:35] <infaddict> i dont think i am, i have around 380 bytes spare.
[17:35] <infaddict> but i know these SD libs are hungry
[17:35] <chrisstubbs> you could take a recording of the signal and check the timing
[17:35] <infaddict> i am using a sdfat library to help with that
[17:35] <chrisstubbs> see if its the timing thats wrong or the actual data bits
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[17:35] <daveake> get it on a scope
[17:36] <daveake> or record the audio and look at it in audacity
[17:36] <infaddict> mmm excellent idea if i had a scope.
[17:36] <infaddict> so what would i look for in audacity?
[17:36] <chrisstubbs> option B should work
[17:36] <infaddict> so i can record a "good" sample (no SD)
[17:36] <daveake> time between bits
[17:36] <chrisstubbs> I wrote something about this some time ago, hang on
[17:36] <infaddict> then a "bad" sample (with SD)
[17:37] <chrisstubbs> https://www.youtube.com/watch?v=veFmFXb16Fo
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[17:39] <infaddict> ah right so open up sample, set to spectogram and then measure timing by selecting
[17:39] <chrisstubbs> yeah
[17:40] <chrisstubbs> 1/period should give you the baud rate
[17:40] <infaddict> yep so its 50 baud so should be 0.02s
[17:40] <infaddict> or v close
[17:40] <infaddict> i will try this thanks!
[17:40] <infaddict> guessing i have to work my way along packet as some chars look ok but then it goes bad.
[17:41] <chrisstubbs> yeah play it back into fldigi and pause it when you get a bad character
[17:41] <chrisstubbs> check the timing around there
[17:41] <infaddict> now you mention memory i wonder if although it seems i have around 400 bytes spare, the open file & write in SD part is using all that.
[17:42] <infaddict> but i did run another memory check which runs whilst you are running and it didnt think i was running out
[17:42] <infaddict> guess this audacity check will prove if the data is being mangled or the timing
[17:43] <infaddict> i think Gqrx records direct in there so should i do that or record inside fldigi?
[17:44] <chrisstubbs> If it can record the audio then that should be fine
[17:44] <infaddict> ok thx will work on this now!
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[17:54] <infaddict> hmmm even by good signal doesnt look as cleancut as chrisstubbs youtube video. my lines look slightly longer and actually overlap a little.
[17:54] <infaddict> *my
[17:54] <infaddict> and that signal being decoded good 100% of the time
[17:55] <Vaizki> have you tried resistors instead of pwm?
[17:55] <infaddict> no because PWM is working fine without any SD card writing
[17:56] <infaddict> successful decoding of between 95 and 100% of sentences over 15 mins of testing
[17:56] <infaddict> here is the audacity zoomed image for my good audio: http://imgur.com/6ULq16V
[17:58] <chrisstubbs> My video used some perfect RTTY generated by fldigi
[17:58] <chrisstubbs> brb
[17:58] <infaddict> ok so i am starting to think this is RAM issue brought on my SD card open/write
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[17:58] <Vaizki> can you show that on a linear scale?
[17:59] <infaddict> not sure Vaizki, not a audacity expert
[18:00] <infaddict> incidentally i am current running without a resistor between my PWM pin and the NTX2B. i know docs say 100K but the ukhas linking tutorial doesnt use one. so was messing around.
[18:00] <infaddict> not sure if I need a resistor using PWM?
[18:00] <Vaizki> why would you put a resistor there when running pwm?
[18:00] <Vaizki> no you dont
[18:00] <infaddict> thats what i was asking. i asked as i didnt know.
[18:01] <infaddict> if i knew why i would put one there i'd already know the answer ;-)
[18:02] <Vaizki> oh ok well when running pwm you dont need one as you are using pwm and ntx2b internal lpf to present <3V voltages to the radio
[18:02] <infaddict> ok thx.
[18:02] <Vaizki> only reason to use pwm is to get rid of the resistors....
[18:02] <infaddict> the ntx2b datasheet mentions 100K on that pin, so thought i would ask to be sure
[18:03] <Vaizki> that's when running on 3.3v
[18:03] <infaddict> ah right
[18:03] <Vaizki> your pwm is approximating a voltage < 3v
[18:04] <infaddict> great cheers Vaizki. gonna do some more testing around this SD card and may end up dropping it off. was just a nice to hae.
[18:04] <infaddict> have
[18:04] <infaddict> i think decoding signals is rather more important hehe
[18:05] <Vaizki> so sd card writing is screwing your timing?
[18:05] <infaddict> yep either timing or data
[18:05] <infaddict> tbc soon with a bit more debugging
[18:05] <mfa298> also datasheet says 10k for 3.3v not 100k. but as you're using pwm for rtty no resistor is needed.
[18:05] <infaddict> either messing with interrupt timing or corrupting data due to memory
[18:05] <Vaizki> which lib are you using for sd writes?
[18:06] <infaddict> sdfat
[18:06] <infaddict> original sd was too big
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[18:06] <infaddict> thx mfa298, yep i meant 10K and thats what I had on my board (now removed)
[18:07] <mfa298> you might want to check the various libraries you're using, it could be they're trying to use the same timers you're also using for rtty and pwm
[18:07] <Vaizki> did you check if the sdfat lib uses timers?
[18:08] <infaddict> nope i havent checked that yet. literally just hot off the press i narrowed it to SD area.
[18:08] <infaddict> so will be doing that v soon!
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[18:12] <infaddict> hmmm can't see it using any timers, other than some example code for a very fast analog data logger
[18:12] <infaddict> so i think it might be memory, hoping to prove that soon
[18:16] <Vaizki> or concurrency issues between ISR and main loop
[18:16] <Vaizki> double check your volatile declarations
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[18:21] <infaddict> good shout on volatile will check that
[18:22] <infaddict> can i copy from a char* to a volatile char* ?
[18:24] <zyp> are you sure you want a volatile char*, not a char* volatile?
[18:25] <infaddict> i get this compile error: HT_Radio:121: error: invalid conversion from 'volatile char*' to 'char*'
[18:25] <infaddict> on a line like this: strcpy(txString,dataString);
[18:25] <infaddict> now dataString is a normal char[]
[18:25] <infaddict> but txString is defined as volatile char[]
[18:25] <infaddict> i want to take a copy of the current dataString in my ISR as it could change mid processing
[18:26] <zyp> you'll have to cast it
[18:26] <zyp> (char*)txString
[18:28] <zyp> «char*» is pointer to char and «volatile char*» is pointer to volatile char
[18:28] <zyp> you can freely copy between char and volatile char, but since they are different types, pointers to them are different types and can't be mixed implicitly
[18:30] <SpacenearUS> New vehicle on the map: 03KK6SDN-11 - 12http://tracker.habhub.org/#!qm=All&q=KK6SDN-11
[18:30] <zyp> a function taking a char* argument will not respect the volatile requirement, and you can therefore not pass a pointer to volatile into it implicitly
[18:33] <infaddict> many thx zyp
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[18:45] <infaddic_> ok i dont think its memory. i am serial debugging the exact string/chars being sent my my TX routine and they arent mangled and are correct.
[18:45] <infaddic_> so I think the SD card writing is either interfering electronically or messing with timing
[18:46] <infaddic_> time to ditch the SD i think
[18:47] <zyp> remember that SD cards are written in sectors, even a small write will take a while since it has to do a full sector
[18:48] <zyp> and if the rest of your code blocks waiting for that, it'll mess up timing for sure
[18:49] <infaddic_> well the SD write is in the main loop away from ISR
[18:49] <infaddic_> so shouldnt interfere
[18:55] <infaddic_> guessing its possible the SD card could be sucking voltage or current and skewing the TX at that moment perhaps
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[19:08] <Vaizki> I'm pretty good at finding faults in others, want to share code? :)
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[19:22] <infaddic_> thx for offer Vaizki, my folks just arriving for dinner now so will catch u up later to discuss cheers
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[19:23] <pc1pcl> wouldn't be surprised if the sdcard lib does something like turning off interrupts while doing its thing..
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[19:25] <Vaizki> I am debating whether to just send off my atmega tracker boards to hackvana or start over with an ARM design
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[19:27] <Vaizki> I don't intend to fly anything for a few months so plenty of time to do everything on teensy or STM32 but maybe I will just get the simplest design done first
[19:28] <mattbrejza> the schematic/pcb for the stm32 isnt any more difficuilt than the avr one
[19:28] <Vaizki> sure but I can breadboard a bare atmega328p (and have done so) to verify everything works without external components
[19:29] <Vaizki> so my schematic is validated there.. and everything is thruhole
[19:29] <Vaizki> so for an ARM design, the "safe" bet would be a teensy 3.1 or some other minimal dev board mounted on headers
[19:31] <Vaizki> also I have zero experience with anything SMD so while it's on the todo list I don't want to start baking ARM chips onto boards just yet
[19:31] <mattbrejza> oh right, havnt even done smd yet :P
[19:31] <mattbrejza> plenty of people here will check your stm32 schematic though
[19:31] <mclane_> do you know the stm32 discovery boards?
[19:32] <Vaizki> yes, one option would be a shield for one of them
[19:32] <Vaizki> but they have all kinds of extra crap onboard
[19:32] <mclane_> yea, but you can use them on a breadboard
[19:33] <Vaizki> I have one of these now to play with: http://www.ebay.com/itm/STM32F103C8T6-ARM-STM32-Minimum-System-Development-Board-Module-Arduino-M73-/301402799820
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[19:33] <Vaizki> pretty minimal setup
[19:33] <Vaizki> and not horribly expensive
[19:34] <Vaizki> so one option would be to to mount that on a custom pcb
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[19:41] <mattbrejza> that doesnt appear to have swd debugging on board|
[19:41] <mattbrejza> although you can plug i an external debugger
[19:42] <Vaizki> I don't make mistakes
[19:42] Nick change: fl_0|afk -> fl_0
[19:42] <Vaizki> oh wait.. ;)
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[19:50] <mattbrejza> being able to debug is one massive reason ill probably not use an avr again
[19:50] <mattbrejza> (new design)
[19:54] <Vaizki> hmpf previous owner has clobbered my yaesu's power jack and it doesn't seem like an easy swap on the pcb for a newbie like me...
[19:56] <LazyLeopard> 817?
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[20:10] <pc1pcl> Vaizki: jack itself broken, or some sort of bad contact on the pcb near it?
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[20:31] <Vaizki> pc1pcl: jack itself is knackered
[20:31] <Vaizki> and yes, 817ND
[20:32] <Babs_> evening - is there any way to grab a group on one schematic and copy it into another schematic? i.e. the equivalent of ctrl+c ctrl+v in every other application?
[20:33] <Babs_> (in eagle)
[20:36] <Babs_> found it
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[20:39] <mattbrejza> i tihkn you can drop one file into another open file
[21:02] <Vaizki> eh tracker map is showing a station on Penrhyn atoll :O
[21:03] <Vaizki> E50W.. I wonder if it's really there :)
[21:06] <Babs_> thanks mattbrejza - it was one of those back to front eagle things
[21:06] <Babs_> annoying
[21:07] <mattbrejza> heh
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[21:23] <mattbrejza> who needs an external crystal when you can just calibrate the internal one :)
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[21:46] <Kalchar> Any body have experience with the I2C interface?
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[21:47] <bertrik> yes, I know a bit about it
[21:47] <Kalchar> Is it possible to get location info from a ublox module over I2C?
[21:48] <bertrik> sorry, I don't know
[21:49] <Kalchar> no problem. thanks anyway
[21:49] <Geoff-G8DHE-Lap> Yes I don't have the details but it does have a I2C interface and several have/are using it
[21:49] <Kalchar> I have it connected via I2C and I can see it at 0x42 but im just not sure how to get the data off it in any meaningful way?
[21:49] <Geoff-G8DHE-Lap> Have a look back thru the logs for the last couple of weeks quite a bit of discussion at times
[21:50] <Geoff-G8DHE-Lap> you will need to refer to the data sheet I suspect there is a lot of info!
[21:51] <daveake> You just read data from it
[21:51] <daveake> 0xFF means it has nothing for you
[21:51] <Kalchar> Its making sence of tha data I'm having trouble with
[21:52] <daveake> It's NMEA data
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[21:53] <Kalchar> I'm getting back long[] and I'm unsure how to parse it into readable NMEA
[21:55] <daveake> Arduino?
[21:55] <Kalchar> raspi
[21:55] <daveake> which lib?
[21:55] <Kalchar> I'm accessing it using python at the moment
[21:56] <Kalchar> smbus
[21:58] <daveake> give up now
[21:58] <daveake> ublox and pi i2c don't work together
[21:58] <daveake> h/w issue in the bcm chip
[21:59] <Kalchar> can you point me to any document tation for that? so i can reference it
[21:59] <Kalchar> but thank you, if that is the case i can stop wasting my time and look for an alternative
[22:00] <daveake> http://www.raspberrypi.org/forums/viewtopic.php?p=146272
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[22:01] <daveake> Specifically, "There is a bug in the I2C master that it does not support clock stretching at arbitrary points.
[22:01] <daveake> It does support clock stretching during the ACK phase. "
[22:01] <daveake> There's a possibility that this got fixed on Pi V2 but I don't know
[22:02] <Kalchar> I'm using the B for dev work but ill be using the A+ for production stuff
[22:02] <daveake> Either way, original BCM chip so it doesn't work
[22:03] <Kalchar> ok
[22:03] <daveake> For the "Pi In The Sky" board we connected the UBlox to some other GPIO pins and did an i2c master in software
[22:03] <daveake> Which is a royal PITA but does worl
[22:03] <daveake> work
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[22:04] <Kalchar> I think I can get around it by using the UBlox in serial and then connect the XBee module using a usb serial connector
[22:04] <daveake> ok
[22:04] <Kalchar> thanks anyway
[22:04] <daveake> This is not a HAB then?
[22:06] <Kalchar> not at the moment, messing around with radio stuff atm.
[22:07] <Kalchar> still needs to be a small payload.
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[22:51] Nick change: fl_0 -> fl_0|afk
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[23:04] <Vaizki> My car battery is at 0.71V
[23:05] <Vaizki> Wheeee
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[23:09] <Lunar_Lander> oh
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[23:40] <Lunar_Lander> good night
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[23:47] <Ian_> I guess that means your battery is FROZEN?
[23:49] <Ian_> Hmmm Espoo temperatures quite mild by Finnish standards at the moment. I guess that your car battery is sorta DEAD?
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[00:00] --- Mon Mar 9 2015