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2 layers35 × 15 mmEMG Candy, the printed circuit board in 3D

EMG Candy

upsidedownlabs/Muscle-BioAmp-Candy26

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

Full screenGitHub.kicad_pcb
Size
35 × 15 mm
Copper layers
2
Thickness
1.6 mm
Parts
41
Nets
15
Pads
71
Tracks, vias
141, 0
Routed
Yes
KiCad
KiCad 6 (file 20211014)
Created
18 Nov 2022
Updated
26 Oct 2024

Overview

EMG Candy is an open-source printed circuit board by upsidedownlabs, from the upsidedownlabs/Muscle-BioAmp-Candy repository on GitHub. It is a 2-layer board of 35 × 15 mm with 41 parts on 15 nets, routed with 141 tracks and 0 vias.

Its parts include 10 resistors, 9 capacitors, 3 fuses, 2 connectors and 1 IC. It belongs with the sensors and measurement boards of this library.

README

README.md

Muscle-BioAmp-Candy

Project Category Muscle BioAmp Candy Revision Muscle BioAmp Candy store link Muscle BioAmp Candy Tindie link Muscle BioAmp Candy intro video [blocked] Upside Down Labs GitHub Sponsors page Upside Down Labs GitHub PayPal page

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.

Upside Down Labs - Muscle BioAmp Candy

Upside Down Labs - Muscle BioAmp Candy electrode placement

Hardware

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.

PCB FrontPCB Back
Upside Down Labs Muscle BioAmp Candy frontUpside Down Labs Muscle BioAmp Candy back

Upside Down Labs Muscle BioAmp Candy front annotated

Upside Down Labs Muscle BioAmp Candy front annotated

Upside Down Labs Muscle BioAmp Candy dimensions

Upside Down Labs Muscle BioAmp Candy schematic

License

Licenses FactsOSHWA Certification
Open Source Licenses FactsOpen Source Hardware Certification mark
Hardware

CERN Open Hardware License Version 2 - Strongly Reciprocal (CERN-OHL-S-2.0).

Software

MIT open source license.

Documentation:

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Parts

41
QtyValueFootprintReferences
10MountingHoleMountingHole:MountingHole_2.1mmH1, H2, H3, H4, H5, H6, H7, H8, H9, H10
3Fiducial_0.5mm_Mask1mmFiducial:Fiducial_0.5mm_Mask1mmF1**, F2**, F3**
2100kResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR7, R10
2100nFCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC4, C8
2100pFCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC1, C3
210kResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR8, R9
21KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR1, R2
21MResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR3, R4
21nFCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC2, C7
22.2uFCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC5, C6
11kResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR5
1220KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR6
147uFCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC9
1AmpPackage_SO:SOIC-14_3.9x8.7mm_P1.27mmU1
1BioAmp_inputConnector_JST:JST_PH_S3B-PH-K_1x03_P2.00mm_HorizontalJ3
1G***kibuzzard-62E8CB67kibuzzard-62E8CB67
1G***kibuzzard-626FA17Ekibuzzard-626FA17E
1G***kibuzzard-626FA157kibuzzard-626FA157
1G***kibuzzard-626BB171kibuzzard-626BB171
1IOConnector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_HorizontalJ1
1LOGOudlabs:UDL_Copper_3mmG***
1LOGOUDLEOG:CandyMuscleG***

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Questions

How big is the EMG Candy PCB?

It measures 35 × 15 mm and has 2 copper layers, 1.6 mm thick.

What parts does the EMG Candy use?

41 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the EMG Candy KiCad files?

From the upsidedownlabs/Muscle-BioAmp-Candy repository on GitHub, at the commit this page was made from: the board is hardware/EMG-Candy.kicad_pcb and its schematic hardware/EMG-Candy.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the EMG Candy design in my own project?

Its repository states no licence, so its author keeps all rights: ask upsidedownlabs before reusing the design.