4 layers99 × 53.3 mm
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io
199 parts1.7kApache-2.0
4 layers30 × 30 mm
Voltage follower
nullcrimson/voltage-follower- Size
- 30 × 30 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 27
- Pads
- 91
- Tracks, vias
- 71, 46
- Pours
- 15
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 12 Apr 2026
- Updated
- 12 Apr 2026
Overview
Voltage follower is an open-source printed circuit board by nullcrimson, from the nullcrimson/voltage-follower repository on GitHub. It is a 4-layer board of 30 × 30 mm with 25 parts on 27 nets, routed with 71 tracks and 46 vias.
It is built around the LM324. Its parts include 16 resistors, 4 capacitors, 3 connectors and 2 ICs.
Main components
1Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100 | R_0402_custom:R_0402_1005Metric | R1, R2, R5, R6, R9, R10, R13, R14 |
| 8 | 100k | R_0402_custom:R_0402_1005Metric | R3, R4, R7, R8, R11, R12, R15, R16 |
| 4 | 100n | C_0402_custom:C_0402_1005Metric | C1, C2, C3, C4 |
| 2 | LM324 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1, U2 |
| 1 | POWER_IN | Connector_JST:JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical | J1 |
| 1 | T_IN | Connector_JST:JST_ZH_B10B-ZR_1x10_P1.50mm_Vertical | J3 |
| 1 | T_OUT | Connector_JST:JST_ZH_B10B-ZR_1x10_P1.50mm_Vertical | J2 |
Questions
How big is the Voltage follower PCB?
It measures 30 × 30 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Voltage follower use?
25 parts, built around the LM324. 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 Voltage follower KiCad files?
From the nullcrimson/voltage-follower repository on GitHub, at the commit this page was made from: the board is voltage-follower.kicad_pcb and its schematic voltage-follower.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Voltage follower design in my own project?
Its repository states no licence, so its author keeps all rights: ask nullcrimson before reusing the design.
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