I’ve seen partial answers to these question in the forum, but i haven’t found a complete answer.
I have an RS2 and I want to set up a permanent power supply for it. I believe that this can be done via the RS/232 serial port.
At present, I just want to power the RS2, I don’t want to receive data over that connection.
I have the Emlid serial cable that connects to the serial port and has a DB9 connector on the other end. I now need something that terminates on DB9 and produces power of the right form on the right pins. This will allow me to create a nice tidy power supply without any bodges.
Question 1: is there a ready-made solution out there that will do that job - for example, an RS/232 board for a PC that supplies suitable power over the serial connection?
(I suspect that the answer is no, but it’s worth asking.)
If not, I need to make up a suitable power supply terminated with a DB9 connector.
I believe that a 5V supply will do the job.
I see that to power the RS2 I need to supply between 7.5W and 10W.
So I think that a power supply that produces 5V and 2A will do the job.
Question 2: is that correct? Will that setup run my RS2? (Not just charge it, run it.)
If so, I plan to buy a suitable power supply, cut off the termination and wire the output to a DB9 connector.
I found a pinout diagram for the serial port here: https://docs.emlid.com/reachrs/assets/files/RS232-port-74a06cef27a21512f4562c14e3727679.pdf
This is for the RS, not the RS2. It says that pins 1, 2 and 3 are ground and pin 9 is 5-20V input.
Question 3: are the pinouts the same for the RS2?
If all the above stacks up, I believe that I will need to connect the red wire from the power supply to pin 9 of a DB9 connector and the black wire to pin 1.
Question 4: is that correct?
Finally, having bought the Emlid serial cable, I plugged it into the RS/232 socket. The locking pins sprung out and now I can’t see how to disconnect the cable.
Question 5: once the cable is plugged in, is it possible to remove it and, if so, how?