Hi there, I am somehow not able to write to any registers on the mpr121. I change the write method to something like the following: def mpr121Write(cmd ,value, adr=address): print "writing to chip: ", adr, " in register: ", cmd , "value: ", value bus.write_byte_data(adr, cmd,value) print "reading fr...

N8HWV wrote:Your table is much easier to follow. Is your project working?

as you can see: It's not! My pi somehow posted too early so I had to edit the post to add my actual problems. Maybe you can solve them?

regards,
David

Hey there, i am also trying to hook up the the mpr121 board via i2c on my model b pi. It is wired like that: mpr121 --> pi +3,3v --> Pin1 (3,3) IRQ --> Pin7 (GPIO4) SCL --> Pin5 (SCL) SDA --> Pin3 (SDA) GND --> Pin6(GND) I am able to determine the adress of the board: pi@raspberrypi ~ $ i2cdetect -y...