4 layers93.8 × 50 mm
4 layers
Pcb extensometria
lorolol/extensometer_pcb- Copper layers
- 4
- Thickness
- 0.19 mm
- Parts
- 59
- Nets
- 70
- Pads
- 205
- Tracks, vias
- 0, 0
- Pours
- 1
- Routed
- Not yet
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 12 Sep 2026
- Updated
- 14 Sep 2026
Overview
Pcb extensometria is an open-source printed circuit board by lorolol, from the lorolol/extensometer_pcb repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board with 59 parts on 70 nets.
It is built around the REF5020ID and LM1117MP-3.3. Its parts include 18 capacitors, 17 resistors, 14 connectors, 4 ICs and 1 diode. It belongs with the STM32 boards of this library.
Main components
2
REF5020ID
SOIC-8-40℃~+125℃ 1.2mA 10mA 2.048V 2.7V~18V 3ppm/℃ Built-in temperature sensor Fixed Series ±0.05% SOIC-8 Voltage Reference ROHSTexas InstrumentsVoltage Reference
LM1117MP-3.3
SOT-2230℃~+125℃@(Ta) 1 1.2V@(800mA) 15V 3.3V 5mA 75dB@(120Hz) 800mA 99uVrms Fixed Over Current Protection、Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
Parts
59| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100nF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C4, C15, C16, C17, C18, C19, C20 |
| 8 | Conn_01x01_Socket | footprints:Pad_4.0mm_6.0mm | J6, J7, J8, J9, J10, J11, J12, J13 |
| 5 | 10 | Resistor_SMD:R_0603_1608Metric | R3, R4, R5, R6, R7 |
| 4 | Screw_Terminal_01x02 | Borne:TerminalBlock_bornier-2_P5.08mm | J2, J3, J4, J5 |
| 2 | 100 | Resistor_SMD:R_0603_1608Metric | R16, R17 |
| 2 | 10K | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C11, C13 |
| 2 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C9, C10 |
| 2 | C | Capacitor_SMD:C_0603_1608Metric | C7, C8 |
| 2 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm | JP2, JP3 |
| 2 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP1, JP4 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C12 |
| 1 | 22uF | Capacitor_SMD:C_0603_1608Metric | C14 |
| 1 | 8MHz | Crystal:Crystal_HC18-U_Vertical | Y2 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | D | Diode_SMD:D_SMA | D1 |
| 1 | LM1117MP-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | MCP3461RT-E/NC | footprints:UQFN20_NC_MCH | U4 |
| 1 | REF5020ID | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | STM32F103C8Tx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | USB_C_Plug_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | P1 |
| 1 | WS_1_SMD | Resistor_SMD:R_0603_1608Metric | R14 |
| 1 | WS_1_THT | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R9 |
| 1 | WS_2_SMD | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | WS_2_THT | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R8 |
| 1 | WS_3_SMD | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | WS_3_THT | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R11 |
| 1 | WS_4_SMD | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | WS_4_THT | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R10 |
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Questions
What parts does the Pcb extensometria use?
59 parts, built around the REF5020ID and LM1117MP-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 Pcb extensometria KiCad files?
From the lorolol/extensometer_pcb repository on GitHub, at the commit this page was made from: the board is _restore_backup_2026-08-26T09-47-47-875/pcb_extensometria.kicad_pcb and its schematic _restore_backup_2026-08-26T09-47-47-875/adc.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pcb extensometria design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).