Subjectsl: a pair of TruePosition gpsdo boards, tested working 2y ago. Revisions B and C Had this boards from ebay around 2y ago. Tested both working in Lady Heather. No problems at all. Today I got them from storage, connected to a 13V power supply. No activity on board beyond 10MHz present. No 1pps. No ttl serial. No RS232C serial. No nothing. Suspected an internal power rail down, wasn't able to find anything strange. I can find 12v, 5v, 3.3v. I think I am running rounds here. Anything I should be aware of and I am missing? Thanks, Alexandre Souza, PU2SEX Enviado do meu Tele-Movel. Desculpe a brevidade. [image: Ícone de erro] Endereço não encontrado Sua mensagem não foi entregue a *time-nuts@febo.com* porque o endereço não foi encontrado ou não pode receber mensagens. SAIBA MAIS <https://support.google.com/mail/?p=NoSuchUser> A resposta do servidor remoto foi: 550 5.1.1 The email account that you tried to reach does not exist. Please try double-checking the recipient's email address for typos or unnecessary spaces. For more information, go to https://support.google.com/mail/?p=NoSuchUser d2e1a72fcca58-724772282dcsi2745381b3a.292 - gsmtp Mostrar texto das mensagens anteriores Enviado do meu Tele-Movel. Desculpe a brevidade.

If I remember correctly, you need to send them $PROCEED before they will start up. Check your serial connections. Default is 9600 baud. It’s unlikely they both just failed in storage. Von meinem iPhone gesendet > On Nov 17, 2024, at 02:36, Alexandre Souza via time-nuts <time-nuts@lists.febo.com> wrote: > > Subjectsl: a pair of TruePosition gpsdo boards, tested working 2y ago. > Revisions B and C > Had this boards from ebay around 2y ago. Tested both working in Lady > Heather. No problems at all. > Today I got them from storage, connected to a 13V power supply. No activity > on board beyond 10MHz present. No 1pps. No ttl serial. No RS232C serial. No > nothing. > > Suspected an internal power rail down, wasn't able to find anything > strange. I can find 12v, 5v, 3.3v. > > I think I am running rounds here. Anything I should be aware of and I am > missing? > > Thanks, > Alexandre Souza, PU2SEX > > Enviado do meu Tele-Movel. > Desculpe a brevidade. > [image: Ícone de erro] > Endereço não encontrado > Sua mensagem não foi entregue a *time-nuts@febo.com* porque o endereço não > foi encontrado ou não pode receber mensagens. > SAIBA MAIS <https://support.google.com/mail/?p=NoSuchUser> > A resposta do servidor remoto foi: > > 550 5.1.1 The email account that you tried to reach does not exist. Please > try double-checking the recipient's email address for typos or unnecessary > spaces. For more information, go to > https://support.google.com/mail/?p=NoSuchUser > d2e1a72fcca58-724772282dcsi2745381b3a.292 > - gsmtp > Mostrar texto das mensagens anteriores > > > Enviado do meu Tele-Movel. > Desculpe a brevidade. > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com > <icon.png>

Danke, herr Ziggy...but unfortunately this is already done, and even before the $proceed the trueposition boards shows some gps messages. But there is just no activity whatsoever. Serial is correct at 9600 n 8 1, power supply is correct, antenna is working and with good view of sky, jumoer on pins 4 and 5 of the 6 pin connector, but no activity on rs232 AND ttl serial port. Unfortunately I don't know what to do. I am examining the boards with a microscope now looking for shorts, debris, whiskers :D whatever... Thanks! Pu2sex, Alexandre Enviado do meu Tele-Movel. Desculpe a brevidade. Em seg., 18 de nov. de 2024 11:59, Ziggy via time-nuts < time-nuts@lists.febo.com> escreveu: > If I remember correctly, you need to send them $PROCEED before they will > start up. Check your serial connections. Default is 9600 baud. It’s > unlikely they both just failed in storage. > > Von meinem iPhone gesendet > > > On Nov 17, 2024, at 02:36, Alexandre Souza via time-nuts < > time-nuts@lists.febo.com> wrote: > > > > Subjectsl: a pair of TruePosition gpsdo boards, tested working 2y ago. > > Revisions B and C > > Had this boards from ebay around 2y ago. Tested both working in Lady > > Heather. No problems at all. > > Today I got them from storage, connected to a 13V power supply. No > activity > > on board beyond 10MHz present. No 1pps. No ttl serial. No RS232C serial. > No > > nothing. > > > > Suspected an internal power rail down, wasn't able to find anything > > strange. I can find 12v, 5v, 3.3v. > > > > I think I am running rounds here. Anything I should be aware of and I am > > missing? > > > > Thanks, > > Alexandre Souza, PU2SEX > > > > Enviado do meu Tele-Movel. > > Desculpe a brevidade. > > [image: Ícone de erro] > > Endereço não encontrado > > Sua mensagem não foi entregue a *time-nuts@febo.com* porque o endereço > não > > foi encontrado ou não pode receber mensagens. > > SAIBA MAIS <https://support.google.com/mail/?p=NoSuchUser> > > A resposta do servidor remoto foi: > > > > 550 5.1.1 The email account that you tried to reach does not exist. > Please > > try double-checking the recipient's email address for typos or > unnecessary > > spaces. For more information, go to > > https://support.google.com/mail/?p=NoSuchUser > > d2e1a72fcca58-724772282dcsi2745381b3a.292 > > - gsmtp > > Mostrar texto das mensagens anteriores > > > > > > Enviado do meu Tele-Movel. > > Desculpe a brevidade. > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe send an email to time-nuts-leave@lists.febo.com > > <icon.png> > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com

On 11/18/2024 9:58 AM, Alexandre Souza via time-nuts wrote: > Danke, herr Ziggy...but unfortunately this is already done, and even before > the $proceed the trueposition boards shows some gps messages. But there is > just no activity whatsoever. Serial is correct at 9600 n 8 1, power supply > is correct, antenna is working and with good view of sky, jumoer on pins 4 > and 5 of the 6 pin connector, but no activity on rs232 AND ttl serial port. Greetings Alexandre and all! So...I'm looking thru my Arduino TruePosition interface code. Seems that before I do *anything* with the unit, I send it the $PROCEED command. In fact, I do it twice, just to be sure: delay(5000); Serial.println("$PROCEED"); delay(5000); Serial.println("$PROCEED"); It has been a long time since I've looked at the TruePosition serial output, but I'm 99.9% sure it won't send anything out the serial port until it's been issued the $PROCEED command. No GPS messages, no nothing. In fact, the TruePosition units don't send any sort of normal NMEA or other known GPS messages - it has it's own format... Looking thru my old notes, I see I wrote down that before "$PROCEED" is issued, the board is in bootloader mode. I also see some notes where I wrote that sending any characters to the board before PROCEED is issued may cause issues to the bootloader. That's why I wait 5 seconds, send it, wait 5 seconds, and send it again. Don't ask me where / why I wrote this down, it's been too long and my memory is too poor to remember. thanks much and 73, ben