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Re: High School Radio Club with Telemetry Setup Question
David and others ...
Sorry for the scatter shot of my last message. Developing at the speed of the mind of high school student is dizzying sometimes. Background on the project is as follows... Our school has a super mileage vehicle club (SMV) that build high endurance "cars" and races them for fuel efficiency. ? last year one of there cars averaged over 100 mpg. In the spring they race their cars at Road America a large race track. They have always wanted to get "real-time" status of their cars to better game the race.? The SMV advisor saw that the radio club was able to send/receive data at distances greater than 5 miles and asked us to take on a joint project.? Project goals: 1. Near real-time reporting of GPS position data -- (we have this already working using a TBEACON and GPSD. 2. Send telemetry data (battery voltage and current draw) from the car's on-board cycle analyst via a serial connection to the raspberry pi. -- Here is where our questions really lie. Does the TBEACON support the COMMENTCMD? Does this still all work with SMARTBEACONING? The examples show perl, python, and bash script but doesn't really give clear guidance on what each does.? It looks like telem-data.pl just concatenates the arguments that are passed to it. ? and telem-volts.conf line 27 just calls?telem-data.pl with a shell script (telem-seq.sh) and a Python script.? Could calling three different systems be made more efficient by using just one script that ends up echoing what the combination of all of them do?? Hope this helps to focus what we are looking for thank you to everyone for your help. Timothy |
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Re: High School Radio Club with Telemetry Setup Question
David Ranch
开云体育Hello Timothy, ? Cool project!
You're a bit all over the place here.? Can you tell us what you're trying to do?? I would think that the TBEACON examples in the Raspberry-Pi-APRS-Tracker.pdf document would be sufficient.? No?
What would be in this CBEACON that isn't covered in say the TBEACON? If CBEACON is what you want, have you reviewed the telemetry-toolkit/telem-volts.conf example configuration file? --David KI6ZHD |
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High School Radio Club with Telemetry Setup Question
Good day All,? Name here is Timothy (KD9DBG) and the high school radio club that I advise (KD9DCS) is trying to build GPS and telemetry beacons for our school's super mileage vehicles. Our question lies in the script(s) needed to send the telemetry data to direwolf. ? We have read many times both the user guide and the telemetry tool kit guide and examples. Have come to the conclusion that we need to use CBEACON and INFOCMD or COMMENTCMD (if embedding the data in a position report) The GPS data is correctly coming in through GPSD (does the COMMENTCMD work with TBEACON?) In the tool kit there are both perl and python scripts.? It seems that the perl script is called by direwollf and the python script is called by the perl script? when looking at the perl script it apears to just bring everything together as a string and echo it back.? I guess the question comes down to could we just use one perl or python or other language script to grab the serial data, put it in the right order/format? CBEACON delay=0:15 every=0:05 via=WIDE2-1 infocmd="" I think that is it for now, there will be more questions in the future (like the adviser for the car club just saw our prototype and asked us to expand the system from 1 car to 8 cars) Thank you for your time and assistance,? Timothy KD9DBG |
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Re: Transmitter stays keyed too long. T/R Delay rime
John KD8DVR
I have a dry sense of humor too. Love the Watts comment :)
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-------- Original Message --------
From: Dana Myers dana.myers@... [direwolf_packet] Sent: Monday, Dec 5, 2016 5:13 PM EST To: direwolf_packet@... Subject: [direwolf_packet] Transmitter stays keyed too long. T/R Delay rime On 12/5/2016 1:41 PM, John KD8DVR kd8dvr@... [direwolf_packet] wrote: Yeah... after I replied, I realized that. I stayed silent to avoid my face turning a deeper shade of red. I apologize - it was meant as a dry bit of humor, perhaps it was a bit too dry. A bit like the time I drily asked someone on Usenet if they were measuring metric or Imperial Watts. |
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Re: Transmitter stays keyed too long. T/R Delay rime
David Ranch
开云体育Hello John,Curious, what device are you using?? Even with Echolink, a keydown delay of 1.5sec is really way to slow. --David KI6ZHD On 12/05/2016 01:46 PM, John KD8DVR
kd8dvr@... [direwolf_packet] wrote:
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Re: Transmitter stays keyed too long. T/R Delay rime
开云体育On 12/5/2016 1:41 PM, John KD8DVR
kd8dvr@... [direwolf_packet] wrote:
?I apologize - it was meant as a dry bit of humor, perhaps it was a bit too dry. A bit like the time I drily asked someone on Usenet if they were measuring metric or Imperial Watts. 73, Dana? K6JQ |
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Re: Transmitter stays keyed too long. T/R Delay rime
John KD8DVR
The device was designed specifically for Echolink. This lack of an
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adjustable T/R delay was intentional. They sell another device that is identical, except the T/R delay is adjustable. Of course, I read this later. My Rigblaster should have no issue with DW. I need to get all set up again. My move to Windows 10 and other stuff has me rebuilding. I was mostly just tinkering with that HT adapter on applications other than Echolink, that it was designed for. -------- Original Message --------
From: David Ranch dranch@... [direwolf_packet] Sent: Sunday, Dec 4, 2016 8:24 PM EST To: direwolf_packet@... Subject: [direwolf_packet] Transmitter stays keyed too long. T/R Delay rime I would agree.... 1500ms is terrible and I can't think of a reason why someone would design in such a huge delay into their product! |
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Re: Transmitter stays keyed too long. T/R Delay rime
John KD8DVR
Yeah... after I replied, I realized that. I stayed silent to avoid my
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face turning a deeper shade of red. -------- Original Message --------
From: Dana Myers dana.myers@... [direwolf_packet] Sent: Sunday, Dec 4, 2016 5:18 PM EST To: direwolf_packet@... Subject: [direwolf_packet] Transmitter stays keyed too long. T/R Delay rime On 12/4/2016 2:13 PM, John KD8DVR kd8dvr@... [direwolf_packet] wrote: Hmmm... never tried... It's an idea. I was being facetious :-) |
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Re: Transmitter stays keyed too long. T/R Delay rime
David Ranch
开云体育I would agree.... 1500ms is terrible and I can't think of a reason why someone would design in such a huge delay into their product! --David KI6ZHD On 12/04/2016 05:15 PM, Doug Kingston
dpk@... [direwolf_packet] wrote:
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Re: Transmitter stays keyed too long. T/R Delay rime
1.5 seconds is an eternity.? Even lousy HTs can T/R switch faster than that.? I would investigate getting that shortened. -Doug- On Sun, Dec 4, 2016 at 2:11 PM, John KD8DVR kd8dvr@... [direwolf_packet] <direwolf_packet@...> wrote:
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Re: Transmitter stays keyed too long. T/R Delay rime
开云体育On 12/4/2016 2:13 PM, John KD8DVR
kd8dvr@... [direwolf_packet] wrote:
? I was being facetious :-) 73, Dana? K6JQ |
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Re: Transmitter stays keyed too long. T/R Delay rime
John KD8DVR
Hmmm... never tried... It's an idea.
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-------- Original Message --------
From: Dana Myers dana.myers@... [direwolf_packet] Sent: Sunday, Dec 4, 2016 2:05 PM EST To: direwolf_packet@... Subject: [direwolf_packet] Transmitter stays keyed too long. T/R Delay rime On 12/4/2016 8:57 AM, John KD8DVR kd8dvr@... [direwolf_packet] wrote: Disregard.... my device has a built in T/R delay that is hard coded. |
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Re: Transmitter stays keyed too long. T/R Delay rime
John KD8DVR
Thanks.. I'll give that a shot and see.... my adapter, though, looks
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like it has a TX to RX delay that's set to 1.5 seconds. The RX to TX time is good. I *can* also use my Rigblaster Nomic with my IC-2200H, (which I actually do all the rest of the time) so there is a definite way for me to be on packet. I'm just playing with HTs. -------- Original Message --------
From: David Ranch dranch@... [direwolf_packet] Sent: Sunday, Dec 4, 2016 12:26 PM EST To: direwolf_packet@... Subject: [direwolf_packet] Transmitter stays keyed too long. T/R Delay rime Hello John, Which HT are you using? Though HTs will work, their TX keyup times can be pretty slow (250ms+). Settings in the direwolf.conf file for TXDELAY (time Direwolf waits after the PTT signal has been given before it starts playing the AFSK packet sounds) and TXTAIL (the delay after the AFSK sounds are complete before it PTT signal is removed). |
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Re: Transmitter stays keyed too long. T/R Delay rime
开云体育On 12/4/2016 8:57 AM, John KD8DVR
kd8dvr@... [direwolf_packet] wrote:
? Oh, can't you set a negative transmit hang time for this? 73, Dana? K6JQ |
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Re: Transmitter stays keyed too long. T/R Delay rime
Here is an alternative??-and-Direwolf-Packet-Modem On Dec 4, 2016 08:57, "John KD8DVR kd8dvr@... [direwolf_packet]" <direwolf_packet@...> wrote:
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Re: Transmitter stays keyed too long. T/R Delay rime
David Ranch
开云体育Hello John, Which HT are you using?? Though HTs will work, their TX keyup times can be pretty slow (250ms+).? Settings in the direwolf.conf file for TXDELAY (time Direwolf waits after the PTT signal has been given before it starts playing the AFSK packet sounds) and TXTAIL (the delay after the AFSK sounds are complete before it PTT signal is removed). --David KI6ZHD On 12/04/2016 08:57 AM, John KD8DVR
kd8dvr@... [direwolf_packet] wrote:
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Re: RPi iGate next step.
David certainly knows the ins and outs of Dire Wolf better than I, and he recently recommended something to another operator that I wasn't aware of - which is pretty slick.? A video is worth a bunch of words. . I don't have one set up. 73, ?Jim A. ? On Sun, Dec 4, 2016 at 11:31 AM, David Ranch dranch@... [direwolf_packet] <direwolf_packet@yahoogroups.
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Re: Transmitter stays keyed too long. T/R Delay rime
John KD8DVR
Disregard.... my device has a built in T/R delay that is hard coded.
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-------- Original Message --------
From: kd8dvr@... [direwolf_packet] Sent: Sunday, Dec 4, 2016 11:34 AM EST To: direwolf_packet@... Subject: [direwolf_packet] Transmitter stays keyed too long. T/R Delay rime I'm using DW with a USB Echolink adapter on an HT. Essemtially it is a USB soundcard and keying circuit on a dongle. Yes, it works... BUT The radio stays keyed longer than I'd like. I could miss packet responses. I wish to use it with both APRS and connected packet. Are there settings to change the transmit to receive delay? Thus far, I have found none. |
John Hays - K7VE / WRJT-215
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