Hi. how do you know you adjusted the gain according to what you need? i tried connecting a DMM to signal pin to measure voltage there but it doesn't change no matter what I do with the gain's potentiometer. it's weird
This circuit tends to be tricky. Please perform three tests: 1. Measure the output voltage without connecting the electrode wires. 2. Measure the output voltage while connecting the electrode wires. 3. Measure the output voltage again without connecting the electrodes, then set your baseline (zero). Test 1 should provide a clean and stable voltage. Test 2 should show peaks, indicating that since the electrodes are not connected to any muscle, they receive parasite currents from the air, and you must calibrate them to have a steady output signal. For the last test, focus on stabilizing the voltage before proceeding to connect the electrodes to the muscle. Remember to always use new electrodes or apply some conductive gel. Let me know your findings.
@@Arduino4all-m9b i did all the tests and got the voltage accordingly. i cant really get a steady output for the second test no matter how I tried, and for the last test best I could do was stabilize the voltage at approx. 0.26 V. however the gain still isn't how I want it to be, sensitivity is too low I'm trying to play floppy bird with the sensor and the triggers are just not right but anyways, thanks a lot for your help! appreciated much
Hi. how do you know you adjusted the gain according to what you need? i tried connecting a DMM to signal pin to measure voltage there but it doesn't change no matter what I do with the gain's potentiometer. it's weird
This circuit tends to be tricky. Please perform three tests:
1. Measure the output voltage without connecting the electrode wires.
2. Measure the output voltage while connecting the electrode wires.
3. Measure the output voltage again without connecting the electrodes, then set your baseline (zero).
Test 1 should provide a clean and stable voltage. Test 2 should show peaks, indicating that since the electrodes are not connected to any muscle, they receive parasite currents from the air, and you must calibrate them to have a steady output signal. For the last test, focus on stabilizing the voltage before proceeding to connect the electrodes to the muscle. Remember to always use new electrodes or apply some conductive gel.
Let me know your findings.
@@Arduino4all-m9b i did all the tests and got the voltage accordingly. i cant really get a steady output for the second test no matter how I tried, and for the last test best I could do was stabilize the voltage at approx. 0.26 V. however the gain still isn't how I want it to be, sensitivity is too low
I'm trying to play floppy bird with the sensor and the triggers are just not right
but anyways, thanks a lot for your help! appreciated much