Muscle-BioAmp-Firmware

Firmware for Muscle BioAmp hardware from Upside Down Labs

No.	Program	Description
1	FixedSampling	Sample from ADC at a fixed rate for easy processing of signal.
2	EMGFilter	A 74.5 - 149.5 Hz band pass filter sketch for clean Electromyography.
3	EMGEnvelop	EMG signal envelop detection for robotics and biomedical applications.
4	ClawController	Servo Claw Controller.
5	ServoControl	Controlling the Servo Motors with EMG signals.
6	LEDBarGraph	LED bar graph representing EMG Amplitude.
7	MuscleStrengthGame	Measure your muscle strength.
8	EMGScrolling	Scrolling through screen using hands.
9	2Channel_LCDBarGraph	LCD bar graph representing EMG Amplitude using 2 Channel

Compatibility of various boards with different sensors

No.	Development Board	Maximum ADC Resolution	Sensor	Compatibility
1	Arduino UNO R3 & Maker UNO	10 bits	Bioamp EXG Pill	✅
			Muscle Bioamp Candy	✅
			Muscle Bioamp Patchy	✅
			Muscle Bioamp Blip	✅
			Muscle Bioamp Biscute	✅
			Muscle Bioamp Shield	✅
2	Arduino UNO R4 Minima & Arduino UNO R4 Wifi	14 bits	Bioamp EXG Pill	✅
			Muscle Bioamp Candy	✅
			Muscle Bioamp Patchy	✅
			Muscle Bioamp Blip	✅
			Muscle Bioamp Biscute	✅
			Muscle Bioamp Shield	✅
3	Raspberry Pi Pico	12 bits	Bioamp EXG Pill	❌
			Muscle Bioamp Candy	✅
			Muscle Bioamp Patchy	❌
			Muscle Bioamp Blip	❌
			Muscle Bioamp Biscute	✅
			Muscle Bioamp Shield	❌
4	ESP32 C3 MINI	12 bits	Bioamp EXG Pill	❌
			Muscle Bioamp Candy	✅
			Muscle Bioamp Patchy	❌
			Muscle Bioamp Blip	❌
			Muscle Bioamp Biscute	✅
			Muscle Bioamp Shield	❌
5	Arduino Due	12 bits	Bioamp EXG Pill	✅
			Muscle Bioamp Candy	✅
			Muscle Bioamp Patchy	✅
			Muscle Bioamp Blip	✅
			Muscle Bioamp Biscute	✅
			Muscle Bioamp Shield	❌
6	Arduino Nano	10 bits	Bioamp EXG Pill	✅
			Muscle Bioamp Candy	✅
			Muscle Bioamp Patchy	✅
			Muscle Bioamp Blip	✅
			Muscle Bioamp Biscute	✅
			Muscle Bioamp Shield	❌

NOTE:

1. GREEN Tick (✅) signifies that the development board works on the same voltage level as the sensor, thus it is compatible.
2. RED cross (❌) shows that the development board and sensor work on different voltages, thus they are not directly compatible.

The issue:
Some of the sensors mentioned above are having a minimum required voltage of 5V. Thus, they will not work properly when their VCC terminal is connected to a development board's VCC that is working on a lower voltage level (For example: 3.3V).

How to resolve the issue?
It's not recommended but to resolve this issue you can use external 5V supply for sensor, use common ground and create a resistor divider to convert the higher voltage output of the sensor to lower voltage level so as to make it compatible with the development board. This step is crucial to prevent the sensor to harm the analog pins of development board.

Examples

1. EMG Filter

   A band pass filter for EMG signals between 74.5 Hz and 149.5 Hz

   

2. EMG Envelop

   EMG signal envelop detection for robotics and biomedical applications.