Muscle-BioAmp-Candy

upsidedownlabs·Muscle-BioAmp-Candy·hardware/EMG-Candy.kicad_pcb

Muscle-BioAmp-Candy PCB layout, top view — open source board by upsidedownlabs

About the Muscle-BioAmp-Candy PCB

Muscle-BioAmp-Candy is an open source PCB design by upsidedownlabs, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 35 × 15 mm, with 22 components from 13 distinct parts.

Other key parts include the Amp. By type, the board carries 10 resistors, 9 capacitors, 2 connectors and 1 IC.

It belongs with the sensors designs in this gallery.

From the project

A candy size ElectroMyoGraphy (EMG) sensor for precise muscle bio-potential signals recording.

A candy size ElectroMyography (EMG) sensor for precise muscle bio-potential signals recording at an affordable cost. It comes with a fixed gain of x2420 and BandPass filter of 72Hz - 720Hz. To record the EMG signals you can use any standalone ADC like ADS1115 or any microcontroller development board with an ADC of your choice like Arduino UNO/Nano.

Muscle BioAmp Candy has been created using KiCad and all the design files can be found under hardware folder. Images below shows a quick overview of the hardware design.

Muscle-BioAmp-Candy, from the project README — From the project README

Main components on the Muscle-BioAmp-Candy

Muscle-BioAmp-Candy bill of materials (BOM)

22 components, 13 distinct parts.

Qty	Part	Footprint	Refs
1	Amp	SOIC-14_3.9x8.7mm_P1.27mm	U1
1	IO	PinHeader_1x03_P2.54mm_Horizontal	J1
1	BioAmp_input	JST_PH_S3B-PH-K_1x03_P2.00mm_Horizontal	J3
2	100pF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C1, C3
2	1nF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C2, C7
2	100nF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C4, C8
2	2.2uF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C5, C6
1	47uF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C9
3	1K	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R1, R2, R5
2	1M	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R3, R4
1	220K	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R6
2	100k	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R7, R10
2	10k	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R8, R9

Muscle-BioAmp-Candy design files

The KiCad project lives in the upsidedownlabs/Muscle-BioAmp-Candy repository on GitHub; these links point at the commit this page was built from.

Layouthardware/EMG-Candy.kicad_pcb
Schematichardware/EMG-Candy.kicad_sch

Muscle-BioAmp-Candy: common questions

How big is the Muscle-BioAmp-Candy PCB?

The Muscle-BioAmp-Candy measures 35 × 15 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Muscle-BioAmp-Candy?

22 components, from 13 distinct parts. The full bill of materials is listed on this page.

Where can I download the Muscle-BioAmp-Candy design files?

From the upsidedownlabs/Muscle-BioAmp-Candy repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Muscle-BioAmp-Candy design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which upsidedownlabs chose for the repository.

Similar boards