EMG-Mechanical-Arm

dominicmorris002·EMG-Mechanical-Arm·Doms PCB/Doms PCB.kicad_pcb

About the EMG-Mechanical-Arm PCB

EMG-Mechanical-Arm is an open source RP2040/RP2350 PCB design by dominicmorris002, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 38 × 66.6 mm, with 39 components from 21 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q32JVSS and AMS1117-3.3. By type, the board carries 15 resistors, 7 capacitors, 5 diodes, 3 ICs, 3 connectors and 1 crystal.

It belongs with the usb & debug tools designs in this gallery.

From the project

EMG Mechanical Arm

A myoelectric prosthetic arm that uses surface EMG signals to detect muscle gestures and drive a mechanical arm via a DC motor. The system consists of a MyoWare 2.0 EMG sensor, an RP2040 microcontroller, DC motor driver H Bridge, Electrode Pads and Cable for Myoware Sensor, and a DC motor to control a 3D-printed mechanical arm.

The RP2040 reads raw ADC values from the EMG sensor and uses the data to drive the H-Bridge to control the motor

EMG-Mechanical-Arm, from the project README — From the project README

Main components on the EMG-Mechanical-Arm

W25Q32JVSS AMS1117-3.3 RP2040

EMG-Mechanical-Arm bill of materials (BOM)

39 components, 21 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	W25Q32JVSS	SOIC-8_5.23x5.23mm_P1.27mm	U1
1	AMS1117-3.3	SOT-223-3_TabPin2	U2
1	RP2040	QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm	U3
1	12MHZ 12Mhz	Crystal_SMD_SeikoEpson_FA238V-4Pin_3.2x2.5mm	Y1
1	USB_C_RECEPTACLE_USB2.0_16P USB_C_Receptacle_USB2.0_16P	USB_C_Receptacle_HRO_TYPE-C-31-M-12	J1
1	CONN_01X03 Conn_01x03	PinSocket_1x03_P2.54mm_Vertical	J2
1	CONN_01X04 Conn_01x04	PinSocket_1x04_P2.54mm_Vertical	J3
1	CONN_01X10 Conn_01x10	PinHeader_1x10_P2.54mm_Vertical	GPIOS1
2	Conn_01x10	PinHeader_1x10_P2.54mm_Vertical	H-Bridge1, H-Bridge2
1	CONN_01X06 Conn_01x06	PinHeader_1x06_P2.54mm_Vertical	MyowareSensors1
1	SW_SPST	SW_SPST_CK_RS282G05A3	SW1
1	D_Schottky_Small	D_SMA	D1
4	LED	LED_0805_2012Metric	D2, D3, D4, D5
3	100NF 100nF	C_0805_2012Metric	C1, C2, C9
4	10UF 10uF	C_0805_2012Metric	C4, C6, C7, C8
6	1k	R_0805_2012Metric	R1, R9, R10, R13, R14, R15
2	10K 10k	R_0805_2012Metric	R2, R7
2	27	R_0805_2012Metric	R3, R4
2	5.1K	R_0805_2012Metric	R5, R6
1	100	R_0805_2012Metric	R8

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Qty	Part	Footprint	Refs
2	4.7K 4.7k	R_0805_2012Metric	R11, R12

EMG-Mechanical-Arm design files

The KiCad project lives in the dominicmorris002/EMG-Mechanical-Arm repository on GitHub; these links point at the commit this page was built from.

EMG-Mechanical-Arm: common questions

What microcontroller does the EMG-Mechanical-Arm use?

The EMG-Mechanical-Arm is built around the RP2040, from the RP2040/RP2350 family.

How big is the EMG-Mechanical-Arm PCB?

The EMG-Mechanical-Arm measures 38 × 66.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the EMG-Mechanical-Arm?

39 components, from 21 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the EMG-Mechanical-Arm design files?

From the dominicmorris002/EMG-Mechanical-Arm repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the EMG-Mechanical-Arm design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the EMG-Mechanical-Arm without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.