2 layers140 × 140 mm
2 layers140 × 140 mm
Prot4
Tellurnoid/newLine- Size
- 140 × 140 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 217
- Nets
- 111
- Pads
- 572
- Tracks, vias
- 3,287, 335
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 22 Apr 2026
- Updated
- 28 Oct 2026
Overview
Prot4 is an open-source printed circuit board by Tellurnoid, from the Tellurnoid/newLine repository on GitHub. It is a 2-layer board of 140 × 140 mm with 217 parts on 111 nets, routed with 3,287 tracks and 335 vias.
It is built around the LM393. Its parts include 33 diodes, 32 transistors, 26 capacitors, 16 ICs and 3 connectors.
Main components
1Parts
217| Qty | Value | Footprint | References |
|---|---|---|---|
| 99 | R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | B1, B2, R1, Rca1, Rca2, Rca3, Rca4, Rca5, Rca6, Rca10, Rca11, Rca12, Rca13, Rca14, Rca15, Rca16 +83 |
| 32 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +16 |
| 32 | Q_Photo_NPN | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | Q1, Q2, Q10, Q11, Q12, Q13, Q14, Q15, Q16, Q17, Q18, Q19, Q20, Q21, Q22, Q23 +16 |
| 25 | C | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23 +9 |
| 16 | LM393 | LM393_SOIC_8_handhandSoilder:LM393_SOIC-8_3.9x4.9mm_P1.27mm_handhandsoilder | U1, U2, U3, U4, U5, U6, U7, U8, U9, U10, U11, U12, U13, U14, U15, U16 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 2 | ~ | RP2040_zero_kimoi1:RP2040_zero_kimoi3 | RP2040_Zero1, RP2040_Zero2 |
| 1 | C | Capacitor_THT:C_Rect_L7.0mm_W2.0mm_P5.00mm | C24 |
| 1 | Conn_01x02_Socket | Connector_JST:JST_XH_S2B-XH-A_1x02_P2.50mm_Horizontal | J1 |
| 1 | Conn_01x04_Socket | Connector_JST:JST_PH_S4B-PH-K_1x04_P2.00mm_Horizontal | J3 |
| 1 | D_Schottky | Diode_SMD:D_SOD-323_HandSoldering | D33 |
| 1 | LED_SW | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | R_Potentiometer_Trim | hankotei:hankotei_node | RV1 |
| 1 | Speaker_Crystal | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | LS1 |
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Questions
How big is the Prot4 PCB?
It measures 140 × 140 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Prot4 use?
217 parts, built around the LM393. 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 Prot4 KiCad files?
From the Tellurnoid/newLine repository on GitHub, at the commit this page was made from: the board is KiCad/prot4/ネット減らしたい/prot4/prot4.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Prot4 design in my own project?
Its repository states no licence, so its author keeps all rights: ask Tellurnoid before reusing the design.