September 2023 - pacsat-dev - mailman.amsat.org

Re: CPushed Updates to PCB and Schematic
by Jim McCullers 15 Sep '23

15 Sep '23

Thanks. By the way, I forgot to mention I have the formulas used to calculate the Class E tank circuit for the AX5043 transmitter but have yet to cross check them with the three frequency settings given in the datasheet. Once I've done that, I'll calculate the component values for 435mhz which should cover any frequency range we might use for the downlink. Jim All, I did push the updates to the PCB and the schematic. Bob ----------------------------------------------------------- pacsat-dev mailing list -- pacsat-dev(a)amsat.org View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to pacsat-dev-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org

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CPushed Updates to PCB and Schematic
by Bob Stricklin 15 Sep '23

15 Sep '23

All, I did push the updates to the PCB and the schematic. Bob

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Pacsat dev mtg 9/14/2023
by Bill 14 Sep '23

14 Sep '23

Pacsat dev mtg 9/14/2023 Thu, Sep 14, 2023 7:00 PM - 9:00 PM (CDT) Please join my meeting from your computer, tablet or smartphone. https://meet.goto.com/529052701 You can also dial in using your phone. (For supported devices, tap a one-touch number below to join instantly.) United States: +1 (872) 240-3311 - One-touch: tel:+18722403311,,529052701# Access Code: 529-052-701 Join from a video-conferencing room or system. Dial in or type: 67.217.95.2 or inroomlink.goto.com Meeting ID: 529 052 701 Or dial directly: 529052701(a)67.217.95.2 or 67.217.95.2##529052701 Get the app now and be ready when your first meeting starts: https://meet.goto.com/install

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CPU Pin Assignments
by Bob Stricklin 14 Sep '23

14 Sep '23

Attached is a list of the COU pin assignments for reference. Bob

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Release of PACSAT v0.1i and Pacsat Ground 0.45c
by Chris Thompson 13 Sep '23

13 Sep '23

I merged my latest branch into main and changed the version to 0.1i. This includes the ability to send (un-authenticated) commands. PacsatGround has also been updated to send the commands. Download here: https://www.g0kla.com/pacsat/index.php This also includes some updates to telemetry to fix some conversions and to include File System telemetry. These are all needed for the demo. 73 Chris -- Chris E. Thompson chrisethompson(a)gmail.com g0kla(a)arrl.net

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Schematic - PCB - BOM
by Bob Stricklin 10 Sep '23

10 Sep '23

All, I pushed an updated version up to GitHub today. Spent the better part of the day working the parts list. Have identified mfg part numbers for all parts now. Put that list into Mouser and found a couple of issues I am still working on. Two parts are not in stock or have minimum buys. I will fix these tomorrow then post the parts list here. Looks like we need about $350 per board in parts not counting the TMS570 and the AX5043. These last two are not on the list because they are not available at Mouser and we already have inventory on these at AMSAT I hope. I made the heat sink pad on the AX5043 smaller to be sure it would not be an issue. I added some circuitry to take care of powering down for the Transmitter when things go bad. Actually added a second watchdog chip for this. I figure we need the processor running on its own so we could upload code and commands if the transmitter is stuck in an effort to recover. I did a few other smaller task like renamed parts on the PCB and made minor changes in schematic. Will post updated PDF of these tomorrow. Bob

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Pacsat dev mtg 9/7/2023
by Bill 07 Sep '23

07 Sep '23

Pacsat dev mtg 9/7/2023 Thu, Sep 7, 2023 7:00 PM - 9:00 PM (CDT) Please join my meeting from your computer, tablet or smartphone. https://meet.goto.com/543292285 You can also dial in using your phone. (For supported devices, tap a one-touch number below to join instantly.) United States: +1 (571) 317-3122 - One-touch: tel:+15713173122,,543292285# Access Code: 543-292-285 Join from a video-conferencing room or system. Dial in or type: 67.217.95.2 or inroomlink.goto.com Meeting ID: 543 292 285 Or dial directly: 543292285(a)67.217.95.2 or 67.217.95.2##543292285 Get the app now and be ready when your first meeting starts: https://meet.goto.com/install

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Re: Pacsat RTC error
by Chris Thompson 07 Sep '23

07 Sep '23

Sounds good, let's discuss tonight. 73 Chris On Wed, Sept 6, 2023, 17:27 Burns Fisher (AMSAT) via pacsat-dev < pacsat-dev(a)amsat.org> wrote: > Chris, there is now a flag that tells whether the RTC is available. Maybe > another way to do it is to skip writing to the RTC if that flag is not set? > 73, > > Burns Fisher, WB1FJ > *AMSAT(R) Engineering -- Flight Software* > > > On Wed, Sep 6, 2023 at 5:21 PM Bill Reed via pacsat-dev < > pacsat-dev(a)amsat.org> wrote: > >> I don't have an RTC installed. >> >> I can set unix time but that command is automatically followed by a set >> RTC command which fails. >> >> Can we break up the set unix time command into two separate commands. >> >> Bill >> >> >> >> >> ==========Port COM5 opened========== >> #Set Unix Time 1694034054 >> Setting unix time to: 1694034054 >> Setting RTC >> trying to set RTC to time: 2023-09-06 21:00:54 >> Failed to set RTC >> Pacsat> >> >> >> >> >> >> >> ----------------------------------------------------------- >> >> pacsat-dev mailing list -- pacsat-dev(a)amsat.org >> View archives of this mailing list at >> https://mailman.amsat.org/hyperkitty/list/[email protected] >> To unsubscribe send an email to pacsat-dev-leave(a)amsat.org >> Manage all of your AMSAT-NA mailing list preferences at >> https://mailman.amsat.org >> > > ----------------------------------------------------------- > > pacsat-dev mailing list -- pacsat-dev(a)amsat.org > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to pacsat-dev-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org >

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Re: Pacsat RTC error
by Burns Fisher (AMSAT) 06 Sep '23

06 Sep '23

Chris, there is now a flag that tells whether the RTC is available. Maybe another way to do it is to skip writing to the RTC if that flag is not set? 73, Burns Fisher, WB1FJ *AMSAT(R) Engineering -- Flight Software* On Wed, Sep 6, 2023 at 5:21 PM Bill Reed via pacsat-dev < pacsat-dev(a)amsat.org> wrote: > I don't have an RTC installed. > > I can set unix time but that command is automatically followed by a set > RTC command which fails. > > Can we break up the set unix time command into two separate commands. > > Bill > > > > > ==========Port COM5 opened========== > #Set Unix Time 1694034054 > Setting unix time to: 1694034054 > Setting RTC > trying to set RTC to time: 2023-09-06 21:00:54 > Failed to set RTC > Pacsat> > > > > > > > ----------------------------------------------------------- > > pacsat-dev mailing list -- pacsat-dev(a)amsat.org > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to pacsat-dev-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org >

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Pacsat RTC error
by Bill Reed 06 Sep '23

06 Sep '23

I don't have an RTC installed. I can set unix time but that command is automatically followed by a set RTC command which fails. Can we break up the set unix time command into two separate commands. Bill ==========Port COM5 opened========== #Set Unix Time 1694034054 Setting unix time to: 1694034054 Setting RTC trying to set RTC to time: 2023-09-06 21:00:54 Failed to set RTC Pacsat>

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