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Granted, using our muscles to control things is the way that most of us are accustomed to doing it. We push buttons, pull levers, move joysticks… but what if we could take the buttons, levers and joysticks out of the equation? That’s right, take the electrical signal straight from the muscle and put it into your device. Thanks to shrinking amplifier technology, we can now do exactly that!
Measuring muscle activity by detecting its electric potential, referred to as electromyography (EMG), has traditionally been used for medical research. However, with the advent of ever shrinking yet more powerful microcontrollers and integrated circuits, EMG circuits and sensors have found their way into all kinds of control systems.
This sensor will measure the filtered and rectified electrical activity of a muscle; outputting 0-Vs Volts depending the amount of activity in the selected muscle, where Vs signifies the voltage of the power source. It’s that easy: stick on a few electrodes (not included), read the voltage out and flex some muscles!
Note: The Muscle Sensor v3 no longer includes biomedical sensor pads and cables as its previous version did. Both the pads and cable can be found in the Recommended Products section below to be purchased separately.
Based on 6 ratings:
2 of 2 found this helpful:
Once everything was wired up correctly I had zero problems with this product. It is a great and accurate sensor!
2 of 2 found this helpful:
Nice and efficient company. Received the items on time. Prices are a little bit expansive Nice product
1 of 2 found this helpful:
Hey Sparkfun’s People, your product and your service is excellent but I need more sensor and you dont have any more in this moment, please help me with this sensors, Its for my final project! Regards!
It does everything it´s supposed to do.
If your like me, you like to read pictures first and words later (if ever) when figuring out electronics. Well make sure you hook up your 9V batteries correctly. The picture of the batteries isn’t super clear and you’ll release the magic smoke. Other than that, this board is is great to connect to a micro-controller ADC input.
Very easy to set up and use. It did not come with the headers that need to be soldered though so make sure you have those available. A few shortcomings (though minor ones). 1) There’s no way to access the output signal before smoothing / rectifying (not necessarily the raw signal), just after the first stage amplification. 2) The gain potentiometer is a continuous one. So one is never quite sure what the gain value is.