Added a co2 sensor (scd41) and a pressure/temp/hty sensor (bmp280) to the ulanzi clock.
I just took 3.3v and gnd from the esp pins and the i2c lines from the other i2c chip on board (the real time clock I think it is)
Can recommend
Can recommend
On second thought, I don’t know why i didn’t pick vcc and gnd from the other chip too. That’s probably easier to solder