Dear Seed Team, or anybody who can help me:
I am stuck with my current project, in which I want to use an M5StickC ESP32 board, which has a Grove port already installed and the SeeedStudio Grove - EMG muscle sensor.
(https://m5stack.com/products/stick-c)
(https://www.seeedstudio.com/Grove-EMG-Detector-p-1737.html?utm_source=blog&utm_medium=blog)
however: The M5Stick can only process 3.3V Signals.
One huge concern about the device is the danger of damaging it by supplying its input pins with 5 Volts.
The short explanation is this: if my EMG sensor device outputs 5 volts on the Grove connector and on one of the female header pins and If 5 volts is returned to the M5StickC it may destroy the ESP32 board inside the M5StickC.
I would like to know how I can troubleshoot this.
I have already tried to measure the output voltage of my sensor, but since I only have a rather crude volt-meter, that did not lead to much. My highest Current-Reading was 20mA on the data Pin of the Grove connector.
Unfortunately Seeed studio does not provide enough data so that I could read up the maximal output wattage.
Will I fry my board when I plug the sensor directly into the Grove port or not?
Any help is appreciated!