2 layers85 × 50 mm
ProcessingAndStorage
RobertGawron/HardwareDataLogger
Data logger shield based on STM32+ESP32. Has: LCD, keyboard, WIFi, UART and SD card for data storage. Input is as pulse counter and UART communication.
62 parts6MIT
2 layers85 × 50 mm
DataAcquisitionUnit
RobertGawron/HardwareDataLogger6Data logger shield based on STM32+ESP32. Has: LCD, keyboard, WIFi, UART and SD card for data storage. Input is as pulse counter and UART communication.
- Size
- 85 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 70
- Nets
- 101
- Pads
- 247
- Tracks, vias
- 393, 44
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 15 Oct 2020
- Updated
- 11 Aug 2026
Overview
DataAcquisitionUnit is an open-source printed circuit board by RobertGawron, from the RobertGawron/HardwareDataLogger repository on GitHub, published under the MIT licence. It is a 2-layer board of 85 × 50 mm with 70 parts on 101 nets, routed with 393 tracks and 44 vias.
It is built around the LM2901 and PJGBLC03C_R1_00001. Its parts include 26 resistors, 10 diodes, 9 capacitors, 8 connectors and 2 ICs. It belongs with the radio and wireless and home automation and IoT boards and the ESP32 and STM32 boards of this library.
Main components
2README
Hardware/ProcessingAndStorage/README.md
Parts
70| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | PJGBLC03C_R1_00001 | Diode_SMD:D_SOD-323F | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 |
| 8 | TBD | Resistor_SMD:R_0805_2012Metric | R5, R6, R7, R8, R15, R16, R17, R18 |
| 8 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 |
| 6 | 22R | Resistor_SMD:R_0805_2012Metric | R21, R22, R23, R24, R25, R26 |
| 4 | 100k | Potentiometer_THT:Potentiometer_Bourns_3296Y_Vertical | RV1, RV2, RV3, RV4 |
| 4 | 10k | Resistor_SMD:R_0805_2012Metric | R9, R10, R19, R20 |
| 4 | 1k | Resistor_SMD:R_0805_2012Metric | R1, R2, R11, R12 |
| 4 | 3n3 | Capacitor_SMD:C_0805_2012Metric | C1, C2, C5, C6 |
| 4 | 8k2 | Resistor_SMD:R_0805_2012Metric | R3, R4, R13, R14 |
| 4 | Conn_Coaxial | Connector_Coaxial:SMA_Molex_73251-2200_Horizontal | J1, J2, J3, J4 |
| 3 | 330n | Capacitor_SMD:C_0805_2012Metric | C11, C12, C13 |
| 3 | DE9_Pins_MountingHoles | Connector_Dsub:DSUB-9_Socket_Vertical_P2.77x2.84mm_MountingHoles | J9, J10, J11 |
| 2 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm | JP2, JP3 |
| 1 | 100n | Capacitor_SMD:C_0805_2012Metric | C14 |
| 1 | 100u | Capacitor_SMD:CP_Elec_6.3x5.8 | C9 |
| 1 | LD1117S50TR_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | LM2901 | Package_SO:SO-14_3.9x8.65mm_P1.27mm | U1 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP1 |
| 1 | ~ | HardwareDataLogger:ExtensionConnector | J7 |
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Questions
How big is the DataAcquisitionUnit PCB?
It measures 85 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the DataAcquisitionUnit use?
70 parts, built around the LM2901 and PJGBLC03C_R1_00001. 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 DataAcquisitionUnit KiCad files?
From the RobertGawron/HardwareDataLogger repository on GitHub, at the commit this page was made from: the board is Hardware/DataAcquisitionUnit/DataAcquisitionUnit.kicad_pcb and its schematic Hardware/DataAcquisitionUnit/DataAcquisitionUnit.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DataAcquisitionUnit 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).