iliasam

Strange situation. st-link programmer with NRST connected and "Connect under Reset" selected should we working anyway. What is the type of st-link programmer that you are using?

If your programmer is same: https://www.mikroshop.ch/shoppic/ST_LINKV2.jpg You need to notice, that it do not have NRST pin. Its RST pin for STM8 only: https://research.kudelskisecurity.com/2020/04/15/swd-part-3-swo-and-nrst/ But if can erase and flash...

Could you try to go calibration at distance 20cm? I do not have such big errors at my module.

FB3MKE IC (DC-DC) is used for producing 3.3V for power supply. YJ33 is a linear source of 3.3V. I'm afraid that "85a" version could really need other phase compensation method...

Phase is compensated by measured amplitude value, temperature phase offset is compensated too, but temperature dependence is much smaller. 110v is OK, so be careful with module. Module does not...

I can try to give you description how to collect needed data. Firstly, I need to build firmware with compensation disabled - it must be used with "PC_phase_analyse.exe" utility. You...

All frequencies are generated by PLL IC (si5351 or its clone), which is same type in all types of modules. This IC is fully controlled by MCU, so all frequencies...

I have published test firmware: https://github.com/iliasam/Laser_tape_reverse_engineering/blob/master/Code/CortexM0/test_firmware_phase_calc.hex See readme.txt description: https://github.com/iliasam/Laser_tape_reverse_engineering/tree/master/Code/CortexM0 I need some time to write description how to make measurements.

Yes, in my photo plate is closing photodiode lens, but photo is made with old module. I had closed laser output with 85b module. I suppose that your device should...

Hello. Unfortunately, support for M88 modules is not planned - I don't have such module. Newer U85x modules are supported: [Link](https://github.com/iliasam/Laser_tape_reverse_engineering/wiki/U85-laser-rangefinder-modules) Notice that firmware for cheap laser tape measure modules...