2 layers47.1 × 57.3 mm
BioElectricalSensor
CGrassin/biosignals
Board for the acquisition of bio-potentials (EMG, ECG, EEG, etc.).
102 parts15MIT
2 layers38.6 × 90.3 mm
BioElectricalSensor
CGrassin/biosignals15Board for the acquisition of bio-potentials (EMG, ECG, EEG, etc.).
- Size
- 38.6 × 90.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 107
- Nets
- 144
- Pads
- 503
- Tracks, vias
- 806, 109
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 29 Mar 2023
- Updated
- 5 Apr 2023
Overview
BioElectricalSensor is an open-source printed circuit board by CGrassin, from the CGrassin/biosignals repository on GitHub, published under the MIT licence. It is a 2-layer board of 38.6 × 90.3 mm with 107 parts on 144 nets, routed with 806 tracks and 109 vias.
It is built around the CRE1S0505SC, NRF24L01 and CH340G, with the TPD4E1U06DBV, AMS1117-3.3 and HT7525-7 among its other parts. Its parts include 48 capacitors, 16 ICs, 11 resistors, 10 connectors and 4 diodes. It belongs with the STM32 boards of this library.
Main components
10
CRE1S0505SC
SIP-4SIP-4 DC-DC Power Modules ROHSMurataDC-DC Power Modules
NRF24L01
QFN-20-EP(4x4)-40℃~+85℃ -85dBm 0dBm 1.9V~3.6V 2.4GHz 2Mbps CRC check function、Automatic response function、Automatic retransmission function SPI QFN-20-EP(4x4) RF Transceiver ICs ROHSNordic SemiconRF Transceiver ICs
CH340G
SOP-16-40℃~+85℃ 2Mbps 3.3V、5V USB 2.0 USB to UART SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
TPD4E1U06DBV
SOT-23-6-40℃~+125℃ 0.8pF 10nA 15V 3A@8/20us 45W@8/20us 5.5V 8.5V Four channels IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 TVS Unidirectional SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSTexas InstrumentsESD And Surge Protection (TVS/ESD)
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
HT7525-7
SOT-89-3-40℃~+85℃@(Ta) 1 100mA 2.5V 2.5uA 30V 30mV@(1mA) Fixed Over Current Protection、Over Temperature Protection、Enable Positive SOT-89-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSHoltek SemiconVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
ISO7321CD
SOIC-8-40℃~+125℃ 1 1 25Mbps 3000 33ns 3V~5.5V 3V~5.5V 65kV/us Fail-safe output、Output status configurable High Level、Low Level SOIC-8 Digital Isolators ROHSTexas InstrumentsDigital IsolatorsLM2664M6
SOT-23-6-40℃~+85℃ -5.5V~-1.8V 1.8V~5.5V 12Ω 40mA 500uA 80kHz 91% Inverted Not supported SOT-23-6 Charge Pumps ROHSTexas InstrumentsCharge Pumps
TPS72325DBV
SOT-23-5-40℃~+125℃ 1 2.5V 2.7V 200mA 48dB@(10kHz)、65dB@(1kHz) 500mV@(200mA) 60uVrms Fixed Negative Over Current Protection、Over Temperature Protection、Enable SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SS-12F44-G5
插件-25℃~+70℃ 11mm 5,000 cycles PC Pin Rectangular Columnar SPDT Through Hole 插件 Slide Switches ROHSHRO ElectronicsSlide Switches
README
README.mdBioSignals
This project is work-in-progress.
BioSignals is a multi-channel, up to 24-bits resolution acquisition system for bio-potentials (EMG, ECG, EEG and more).
Repository structure:
- Firmware_BioSignals: the firmware to be programmed on the board with STM32duino.
- Electronics_BioSignals: the circuit board files.
- Software_BioSignals: software for the host computer
- CAD_BioSignals: 3D files (EEG headware).
- Interface.md: description of the data and command interface to the board.
Parts
107| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 100n | Capacitor_SMD:C_0805_2012Metric | C1, C3, C7, C9, C11, C12, C13, C16, C19, C22, C26, C33, C34, C35, C36, C42 |
| 9 | 10u | Capacitor_SMD:C_0805_2012Metric | C14, C17, C18, C21, C24, C25, C32, C46, C49 |
| 9 | 1u | Capacitor_SMD:C_0805_2012Metric | C27, C28, C29, C30, C31, C37, C38, C40, C41 |
| 7 | TPD4E1U06 | Package_TO_SOT_SMD:SOT-23-6 | U3, U7, U9, U12, U13, U14, U16 |
| 5 | 1n | Resistor_SMD:R_Array_Convex_4x0603 | CN1, CN2, CN3, CN4, CN5 |
| 5 | 2.2k | Resistor_SMD:R_Array_Convex_4x0603 | RN1, RN2, RN3, RN4, RN5 |
| 4 | 1k | Resistor_SMD:R_0805_2012Metric | R3, R4, R7, R9 |
| 4 | 22p | Capacitor_SMD:C_0805_2012Metric | C2, C4, C8, C10 |
| 3 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R2, R5 |
| 2 | 10n | Capacitor_SMD:C_0805_2012Metric | C5, C44 |
| 2 | 1n | Capacitor_SMD:C_0805_2012Metric | C23, C47 |
| 2 | 2.2u | Capacitor_SMD:C_0805_2012Metric | C43, C45 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric | R10, R11 |
| 2 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad | H2, H3 |
| 1 | -2.5V | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
| 1 | 100k | Resistor_SMD:R_0805_2012Metric | R6 |
| 1 | 100u | Capacitor_SMD:CP_Elec_6.3x7.7 | C15 |
| 1 | 10u,tant | Capacitor_Tantalum_SMD:CP_EIA-3216-10_Kemet-I | C20 |
| 1 | 12MHz | Crystal:Crystal_SMD_HC49-SD | Y1 |
| 1 | 1M | Resistor_SMD:R_0805_2012Metric | R8 |
| 1 | 2.5V | TestPoint:TestPoint_Pad_D1.0mm | TP3 |
| 1 | 22u | Capacitor_SMD:C_0805_2012Metric | C39 |
| 1 | 22u/200mA | Inductor_SMD:L_1210_3225Metric | L1 |
| 1 | 3.3V | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | 4.7u | Capacitor_SMD:C_0805_2012Metric | C48 |
| 1 | 5819 | Diode_SMD:D_SOD-123 | D9 |
| 1 | 8MHz | Crystal:Crystal_SMD_HC49-SD | Y2 |
| 1 | ADS1298PAG | Package_QFP:TQFP-64_10x10mm_P0.5mm | U8 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U6 |
| 1 | Battery | Connector_JST:JST_XH_S2B-XH-A-1_1x02_P2.50mm_Horizontal | BT1 |
| 1 | CH340G | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U1 |
| 1 | CRE1S0505SC | Converter_DCDC:Converter_DCDC_muRata_CRE1xxxxxxSC_THT | U4 |
| 1 | HT7525-7 | Package_TO_SOT_SMD:SOT-23-5 | U11 |
| 1 | ISO7321C | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | Input | Connector_PinHeader_2.54mm:PinHeader_2x13_P2.54mm_Horizontal | J6 |
| 1 | LM2664 | Package_TO_SOT_SMD:SOT-23-6 | U10 |
| 1 | Logo_Open_Hardware_Large | Charleslabs_Parts:Charleslabs_Logo_5mm | LOGO1 |
| 1 | MountingHole | MountingHole:MountingHole_3.2mm_M3_DIN965 | H1 |
| 1 | PWR_LED | LED_SMD:LED_0805_2012Metric | D10 |
| 1 | RX_LED | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | SS-12F44-G5 | C10418:SPDT_12.1_5.6 | SW1 |
| 1 | STM32F103C8Tx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | SWD | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | TF_PUSH | C10418:TFPUSH | J5 |
| 1 | TPS72325 | Package_TO_SOT_SMD:SOT-23-5 | U15 |
| 1 | TX_LED | LED_SMD:LED_0805_2012Metric | D2 |
| 1 | USB_C_Plug_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | P1 |
| 1 | Vneg_raw | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | nRF24L01 | Connector_PinSocket_2.54mm:PinSocket_2x04_P2.54mm_Vertical | J4 |
Questions
How big is the BioElectricalSensor PCB?
It measures 38.6 × 90.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the BioElectricalSensor use?
107 parts, built around the CRE1S0505SC, NRF24L01, CH340G and TPD4E1U06DBV. 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 BioElectricalSensor KiCad files?
From the CGrassin/biosignals repository on GitHub, at the commit this page was made from: the board is Electronics_BioSignals/BioSignals_rev1/BioElectricalSensor.kicad_pcb and its schematic Electronics_BioSignals/BioSignals_rev1/BioElectricalSensor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BioElectricalSensor design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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