2 layers101.6 × 152.4 mm
4 layers42.6 × 56.6 mm
Emg sensing board
ayushchakra/emg-sensingElectromygraphy is a medical tool used to evaluate the health of individual muscles and the nerve cells that dictate their movement.
- Size
- 42.6 × 56.6 mm
- Copper layers
- 4
- Thickness
- 4.69 mm
- Parts
- 177
- Nets
- 140
- Pads
- 509
- Tracks, vias
- 1,655, 134
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 21 Oct 2022
- Updated
- 27 Dec 2022
Overview
Emg sensing board is an open-source printed circuit board by ayushchakra, from the ayushchakra/emg-sensing repository on GitHub. It is a 4-layer board of 42.6 × 56.6 mm with 177 parts on 140 nets, routed with 1,655 tracks and 134 vias.
It is built around the RP2040, RN4871-I/RM140 and MCP6N11-002E/SN, with the MCP6021-E/P and W25Q128JVSIQ among its other parts. Its parts include 73 resistors, 47 capacitors, 17 ICs, 14 diodes and 3 connectors. It belongs with the RP2040 boards of this library.
Main components
5
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
RN4871-I/RM140
SMD-16P0dBm RN4871 chip SPI、UART、I2C、AIO、PIO SMD-16P Bluetooth Modules ROHSMicrochip TechnologyBluetooth Modules
MCP6N11-002E/SN
SOIC-8-40℃~+125℃ 1 1% 1.8V~5.5V 100dB 10pA 1MHz 1pA 2mV 30mA 45uV/℃ 475nV/√Hz@10kHz 800uA 88dB 9V/us External resistor gain、Enable/shutdown function Rail-to-Rail Input, Rail-to-Rail Output SOIC-8 Instrumentation Amplifiers ROHSMicrochip TechnologyInstrumentation Amplifiers
MCP6021-E/P
PDIP-8-40℃~+125℃ 1 10MHz 1mA 1pA 1pA 2.5V~5.5V 3.5uV/℃ 30mA 500uV 7V/us 8.7nV/√Hz@10kHz 90dB Built-in compensation Rail-to-Rail Input, Rail-to-Rail Output PDIP-8 Operational Amplifier ROHSMicrochip TechnologyOperational Amplifier
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
README
README.mdEMG Sensing Circuit Board
Electromygraphy is a medical tool used to evaluate the health of individual muscles and the nerve cells that dictate their movement. The intention of this project was to design a four-channel surface electromygraphy (sEMG) printed circuit board in order to process real-time electromyographic signals generated from a user’s muscle movements. The board was intended to communicate with a user’s computer via Bluetooth and Serial to provide flexibility to the physical setup, along with portability for ease of access to EMG information. The full hardware and software overview can be found here.
Parts
177| Qty | Value | Footprint | References |
|---|---|---|---|
| 22 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C10, C11, C12, C13, C14, C15, C18, C19, C20, C21, C22, C23, C26, C27, C29, C33 +6 |
| 22 | 10k | Resistor_SMD:R_0603_1608Metric | R18, R19, R23, R24, R25, R26, R27, R28, R29, R30, R31, R41, R42, R43, R44, R45 +6 |
| 13 | 100k | Resistor_SMD:R_0603_1608Metric | R5, R6, R7, R8, R32, R33, R34, R35, R36, R37, R38, R39, R40 |
| 8 | .33uF | Capacitor_SMD:C_0603_1608Metric | C34, C35, C36, C37, C38, C39, C45, C46 |
| 8 | 453 | Resistor_SMD:R_0603_1608Metric | R47, R48, R49, R50, R51, R52, R69, R70 |
| 8 | 909 | Resistor_SMD:R_0603_1608Metric | R53, R54, R55, R56, R57, R58, R71, R72 |
| 8 | D | Diode_SMD:D_0805_2012Metric | D7, D8, D9, D10, D11, D12, D13, D14 |
| 7 | 1uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C4, C16, C17, C32 |
| 6 | 10uF | Capacitor_SMD:C_0603_1608Metric | C24, C25, C28, C30, C31, C44 |
| 6 | 1k | Resistor_SMD:R_0603_1608Metric | R9, R10, R11, R12, R13, R14 |
| 5 | LED | LED_SMD:LED_0805_2012Metric | D1, D2, D3, D4, D5 |
| 4 | .033uF | Capacitor_SMD:C_0603_1608Metric | C40, C41, C42, C47 |
| 4 | 787 | Resistor_SMD:R_0603_1608Metric | R15, R16, R17, R62 |
| 4 | 8.1k | Resistor_SMD:R_0603_1608Metric | R20, R21, R22, R63 |
| 4 | 9.09k | Resistor_SMD:R_0603_1608Metric | R59, R60, R61, R73 |
| 4 | ISL90462WIH627Z-TKCT-ND | ISL90462WIH627Z:ISL90462WIH627Z-TKCT-ND | U6, U7, U8, U9 |
| 4 | MCP6N11-002E/SN | MCP6N11:MCP6N11-002ESN | U1, U2, U3, U5 |
| 4 | Opamp_MCP6024T-E/ST | MCP6024:MCP6024T | U13, U14, U15, U17 |
| 2 | 27 | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 1 | 12MHz | Eclectronics:CSTNE | Y1 |
| 1 | BOOT | Eclectronics:TL3301AFxxxxJ | S2 |
| 1 | Conn_01x09 | Connector_PinSocket_2.54mm:PinSocket_1x09_P2.54mm_Vertical | J2 |
| 1 | DEBUG | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | G*** | kibuzzard-63775E2B | kibuzzard-63775E2B |
| 1 | G*** | kibuzzard-6377605B | kibuzzard-6377605B |
| 1 | G*** | kibuzzard-63775F41 | kibuzzard-63775F41 |
| 1 | G*** | kibuzzard-63775ECF | kibuzzard-63775ECF |
| 1 | G*** | kibuzzard-63775DF3 | kibuzzard-63775DF3 |
| 1 | G*** | kibuzzard-63775E69 | kibuzzard-63775E69 |
| 1 | G*** | kibuzzard-63775E55 | kibuzzard-63775E55 |
| 1 | G*** | kibuzzard-63775FC8 | kibuzzard-63775FC8 |
| 1 | G*** | kibuzzard-63775DCC | kibuzzard-63775DCC |
| 1 | G*** | kibuzzard-63775F11 | kibuzzard-63775F11 |
| 1 | G*** | kibuzzard-63775F9D | kibuzzard-63775F9D |
| 1 | G*** | kibuzzard-63775D95 | kibuzzard-63775D95 |
| 1 | G*** | kibuzzard-63775E81 | kibuzzard-63775E81 |
| 1 | G*** | kibuzzard-63775D6F | kibuzzard-63775D6F |
| 1 | G*** | kibuzzard-63775FF7 | kibuzzard-63775FF7 |
| 1 | G*** | kibuzzard-63775F30 | kibuzzard-63775F30 |
| 1 | G*** | kibuzzard-63775E08 | kibuzzard-63775E08 |
| 1 | G*** | kibuzzard-63775DA9 | kibuzzard-63775DA9 |
| 1 | G*** | kibuzzard-63776016 | kibuzzard-63776016 |
| 1 | G*** | kibuzzard-63775F53 | kibuzzard-63775F53 |
| 1 | MCP1702T-3302E_CB | Package_TO_SOT_SMD:SOT-23 | U12 |
| 1 | MCP6021 | Package_TO_SOT_SMD:SOT-23-5 | U16 |
| 1 | PWR | LED_SMD:LED_0805_2012Metric | D6 |
| 1 | RN4871-I/RM140 | RN4871:RN4871 | U11 |
| 1 | RP2040 | Eclectronics:RP2040 | U10 |
| 1 | RST | Eclectronics:TL3301AFxxxxJ | S1 |
| 1 | USB_A_0480370001 | Eclectronics:USB_A_0480370001 | J1 |
| 1 | W25Q128JV | Package_SON:WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4.3mm | U4 |
Questions
How big is the Emg sensing board PCB?
It measures 42.6 × 56.6 mm and has 4 copper layers, 4.69 mm thick.
What parts does the Emg sensing board use?
177 parts, built around the RP2040, RN4871-I/RM140, MCP6N11-002E/SN and MCP6021-E/P. 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 sensing board KiCad files?
From the ayushchakra/emg-sensing repository on GitHub, at the commit this page was made from: the board is hardware/emg_sensing_board/emg_sensing_board.kicad_pcb and its schematic hardware/emg_sensing_board/differential_amplifier.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Emg sensing board design in my own project?
Its repository states no licence, so its author keeps all rights: ask ayushchakra before reusing the design.
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