Custom firmware for the FS2011/FS9000/NR-950/YT-203B Geiger counters

gissio wrote:

Datalogging in Rad Pro is supported through SWD https://en.wikipedia.org/wiki/JTAG#Similar_interface_standards).
 

Is this done via the ST-LINK dongle, and radlog is configured for serial input? If not, how so? Also from what I have briefly read, Arduino can read SWD, so that could take the reading and upload to radmon.org and would also be able to write to an SD card. Am I correct in this assumption?

It's also great you have written or the GD32 MCU. I haven't received mine yet so I don't know what MCU it will have. I'll let you know when it lands.

larkar wrote:

Openlog (https://www.sparkfun.com/products/13712) for logging serial data is an option, well, when/if serial output is available.

That's a neat little module, larkar. I like the low power consumption. I would think it easy enough to enable cpm UART output on an ST MCU and that could be fed right into that module, or an ESP, or something. The downsides are that I have never programmed an ST MCU (maybe gissio could?) and the other would be attaching wires to the MCU to get the CPM out. The pins on those MCUs are super tiny, and if there are no solder points on the board it is probably not going to be easy.

Whoo! My FS2011 landed today, and I have the ST-LINK dongle too. This one does have the GD32 MCU, so that's great that gissio has firmware for this MCU as the stock firmware really sucks. Interestingly the tube in mine appears to be a J305, but there are no markings on the tube that I can tell. it seems to be the exact same size and construction as a J305. I'll remove the tube and inspect it further later as it has been soldered in. I will probably have a play with the counter and try updating the firmware this weekend.