2 layers38.6 × 90.3 mm
BioElectricalSensor
CGrassin/biosignals
Board for the acquisition of bio-potentials (EMG, ECG, EEG, etc.).
107 parts15MIT
2 layers47.1 × 57.3 mm
BioElectricalSensor
CGrassin/biosignals15Board for the acquisition of bio-potentials (EMG, ECG, EEG, etc.).
- Size
- 47.1 × 57.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 102
- Nets
- 170
- Pads
- 523
- Tracks, vias
- 966, 106
- 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 47.1 × 57.3 mm with 102 parts on 170 nets, routed with 966 tracks and 106 vias.
It is built around the CRE1S0505SC, CH340G and TPD4E1U06DBV, with the AMS1117-3.3, HT7525-7 and ISO7321CD among its other parts. Its parts include 48 capacitors, 17 ICs, 10 resistors, 10 connectors and 6 diodes. It belongs with the STM32 boards of this library.
Main components
8
CRE1S0505SC
SIP-4SIP-4 DC-DC Power Modules ROHSMurataDC-DC Power Modules
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
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
102| 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 | 1k | Resistor_SMD:R_0805_2012Metric | R3, R4, R7, R9, R13 |
| 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 | 22p | Capacitor_SMD:C_0805_2012Metric | C2, C4, C8, C10 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric | R5, R12 |
| 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 | 5819 | Diode_SMD:D_SOD-123 | D4, D9 |
| 1 | 10u | Capacitor_SMD:CP_Elec_5x5.4 | C15 |
| 1 | 10u,tant | Capacitor_Tantalum_SMD:CP_EIA-3216-10_Kemet-I | C20 |
| 1 | 12MHz | Crystal:Crystal_SMD_5032-2Pin_5.0x3.2mm | Y1 |
| 1 | 1M | Resistor_SMD:R_0805_2012Metric | R8 |
| 1 | 22u | Capacitor_SMD:C_0805_2012Metric | C39 |
| 1 | 4.7u | Capacitor_SMD:C_0805_2012Metric | C48 |
| 1 | 6V Battery | Connector_JST:JST_XH_S2B-XH-A-1_1x02_P2.50mm_Horizontal | BT1 |
| 1 | 8MHz | Crystal:Crystal_SMD_5032-2Pin_5.0x3.2mm | 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 | BT_LED | LED_SMD:LED_0805_2012Metric | D3 |
| 1 | CH340G | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U1 |
| 1 | CRE1S0505SC | Converter_DCDC:Converter_DCDC_muRata_CRE1xxxxxxSC_THT | U4 |
| 1 | HC-06 | C10418:HC-05 | U17 |
| 1 | HT7525-7 | Package_TO_SOT_SMD:SOT-23-5 | U11 |
| 1 | I2C | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2 |
| 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_10mm | LOGO2 |
| 1 | Logo_Open_Hardware_Large | Charleslabs_Parts:Charleslabs_Logo_5mm | LOGO1 |
| 1 | PWR_LED | LED_SMD:LED_0805_2012Metric | D10 |
| 1 | RX_LED | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | STM32F103C8Tx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | SWD | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | SW2 |
| 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 |
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Questions
How big is the BioElectricalSensor PCB?
It measures 47.1 × 57.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the BioElectricalSensor use?
102 parts, built around the CRE1S0505SC, CH340G, TPD4E1U06DBV and AMS1117-3.3. 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_rev2/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).