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Hi I bought pca9515a from aliexpress like in this picture wishing to connect long i2c (longer than 10m.). Today I received the module and tested them by simply connect them like in your picture (pic1), but it won't work. I2c scanner shows nothing. Can you help guiding me to right direction here? Thank you.
Regards,
RichJ

Hi, where did you find assembled 4 wire cable from pzem's to your board?

very nice information regarding these servos

im trying to command few ventilation dampers using these servomotors that are quite far away from each other, so i might be using each with one module to have a good pwm signal coming to them.

Is esp8266-01 enough to control one motor ? anybody tested it ?
this is already integrated in the latest tasmota.bin ?

thanks