HI, Colin,
I'm working on a solution to add a GPS receiver to the DM1701. I found that the ATGM336H module for arduino sold on aliexpress for ~$4 fits easily in the DM1701.
Looking at the code , the GPS on/off function is compiled out of the firmware, so I'll have to generate a new image.
Do you know what would be the best GPIO pin to power the GPS module ? ( I can then add the turn on/off function back in the firmware)
I see that in non MDUV380 radios usart0 is used for the GPS data input. Do you know if this is available in the DM1701 or should I use another one ?
Thanks,
73's
Luca
GPS on DM1701 best hardware hookup?
Re: GPS on DM1701 best hardware hookup?
Hello,
Have you managed to go forward with this project? I'm interested in also adding GPS to the DM1701.
73's
Have you managed to go forward with this project? I'm interested in also adding GPS to the DM1701.
73's
Re: GPS on DM1701 best hardware hookup?
not really. I got distracted with building DMR repeaters.
I had everything correct, but I could not solder the wire to the STM pin properly as you need a very thin wire , and I shorted 2 pins so the serial port no longer works.
I have a microscope , and could probably fix it , but I no longer have the time. The tricky part was finding a GPS antenna to fit at the top of the radio between the knobs. I used one out of a dead GPS watch because i could not find a similar one for sale. If you install the GPS , just power it permanently with the CPU power as the GPS off feature is not very useful and the power savings is minimal.
Goos luck.
Luca
VE2WKR//W0
I had everything correct, but I could not solder the wire to the STM pin properly as you need a very thin wire , and I shorted 2 pins so the serial port no longer works.
I have a microscope , and could probably fix it , but I no longer have the time. The tricky part was finding a GPS antenna to fit at the top of the radio between the knobs. I used one out of a dead GPS watch because i could not find a similar one for sale. If you install the GPS , just power it permanently with the CPU power as the GPS off feature is not very useful and the power savings is minimal.
Goos luck.
Luca
VE2WKR//W0