Hello. I'm trying to connect the module HM55B (electronic compass) with MCB 2378. The module operates at 5 volts and I want to connect FAST GPIO pins that go to 3.3 volts. How I can do? Thank you very much
In the data sheet at the beginning says "The sensing device on the Compass Module is a Hitachi HM55B chip. An onboard regulator and resistor protection make the 3 volt HM55B chip compatible with 5 volt supply BASIC Stamp ® microcontroller and signal levels". I do not know if it will work when connected to 3.3 volt Vcc, since then he says that the Vcc is 5 v. It has a voltage regulator. If I want to receive data from the sensor, which is the amount of resistance I have to put in series. Please, Do not get angry with me. Antio Moyano