I'm planning to use op amps to make a EMG muscle sensor to move my robotic arm. I'm following this site http://www.instructables.com/id/Muscle-EMG-Sensor-for-a-Microcontroller/
I only know the basics of op amps. In the instructables he uses TL072 and dual low noise op-amp. I only have TLC279 op amps which are single supply op amps. I'm not sure about the difference between them, but would it be a problem? Also he uses an INA106 Precision Fixed-Gain Differential Amplifier. I'm assuming I can just put a TL072 or TLC279 in a differential setup?
Lastly, reading other EMG posts they used similar op amp circuits with electrodes for sensing the heart. In this case they said not to stick the electrodes on your arm due to safety, but reasons why wasn't specified. I'm assuming the problem is the very tiny chance of a surge of current going up your arm and down to through your heart. Is it really an issue? Would have another metal electrode/brace on my shoulder connected to ground fix prevent this then? Thanks.
I only know the basics of op amps. In the instructables he uses TL072 and dual low noise op-amp. I only have TLC279 op amps which are single supply op amps. I'm not sure about the difference between them, but would it be a problem? Also he uses an INA106 Precision Fixed-Gain Differential Amplifier. I'm assuming I can just put a TL072 or TLC279 in a differential setup?
Lastly, reading other EMG posts they used similar op amp circuits with electrodes for sensing the heart. In this case they said not to stick the electrodes on your arm due to safety, but reasons why wasn't specified. I'm assuming the problem is the very tiny chance of a surge of current going up your arm and down to through your heart. Is it really an issue? Would have another metal electrode/brace on my shoulder connected to ground fix prevent this then? Thanks.