Myoware 2.0 stopped working.
I followed the set up instructions for visualizing the analog data on the arduino serial plotter and had success (My only code change was using arduino pin A1 instead of A0 because I used an off brand arduino). The values reflected my muscle activity so yay.
I had bad solder points and a wire broke so I re-soldered with proper jumper wires and a slightly better solder job. This is when everything derailed. My computer stopped being able to recognize my arduino so I switched out the arduino and the connection issue was solved. Somewhere in my problem isolation, I must’ve messed up something else because then the analog signal remained at 1 value (1023) when I ran the analog read program. Then the VIN indicator LED on the sensor stopped lighting up (I’m not sure when the ENV LED stopped lighting up but it was before the VIN LED stopped lighting up). Below are the different set ups I’ve used to try to isolate the problem. Each setup was tried with and without EMG patches attached to the sensor (had no effect).
Materials: Myoware 2.0, Elegoo arduino nano, 2023 MacBook Pro, 5V 1000mA powerbank.
Setup 1: Arduino connected to computer via usb port. No other connections.
- When the program runs, it starts at 491 and steadily decays to 260.
Setup 2: Arduino connected to computer via usb port, Myoware 2.0 connected to GND, 5V, and A1 Pins of arduino. (This is the setup that was instructed by sparkfun and initially yielded success… until it didn’t).
- On the sensor, neither the VIN or ENV LED’s turn on.
- When the program runs, it records a value of 1023 the entire time.
Setup 3: Arduino connected to computer via usb port, Myoware 2.0 connected to GND and A1 Pins of arduino. (5V is not connected)
- Same result as steup2
Setup 4: 5V powerbank with GND and VIN connected to GND and VIN of myoware 2.0. The GND of the powerbank is shared with the arduino. A1 of arduino connected to ENV of sensor. (Nothing to power the arduino)
- VIN LED on the sensor is dim and flickering
- Once the arduino gets power from the computer via the usb port, the VIN LED on the sensor turns off.
- The above occurs when both or either the VIN and ENV pins on the sensor are connected to the arduino.
Below are my solder points.
