4 layers100 × 54 mm
32Bit shift register
MaltWhiskey/Mega-Cube
16x16x16 PL9823 Cube with Teensy 4.0 and FlexIO driver
64 parts766
4 layers56 × 60 mm
Rat v2
jer-lil/rat-v2Proco Rat with mods. Second version
- Size
- 56 × 60 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 64
- Nets
- 33
- Pads
- 132
- Tracks, vias
- 252, 159
- Pours
- 10
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 16 Mar 2024
- Updated
- 4 Jan 2026
Overview
Rat v2 is an open-source printed circuit board by jer-lil, from the jer-lil/rat-v2 repository on GitHub, published under the Apache-2.0 licence. It is a 4-layer board of 56 × 60 mm with 64 parts on 33 nets, routed with 252 tracks and 159 vias.
It is built around the LM301AN. Its parts include 18 capacitors, 18 resistors, 10 diodes, 8 connectors and 2 switches.
Main components
1README
README.mdrat-v2
Proco Rat with mods. Second version
Parts
64| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 1N914 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D3, D4, D5, D6, D7, D8, D9, D10 |
| 4 | GND | BB_Pads:WirePad_22AWG | P3, P5, P7, P8 |
| 3 | 100 | BB_Resistors:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.5mm_Horizontal | R10, R14, R16 |
| 3 | 100k | BB_Resistors:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.5mm_Horizontal | R11, R12, R17 |
| 3 | 10k | BB_Resistors:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.5mm_Horizontal | R9, R13, R15 |
| 2 | 1.5k | BB_Resistors:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.5mm_Horizontal | R6, R7 |
| 2 | 100kA | BB_Potentiometers:Potentiometer_16MM | RV1, RV2 |
| 2 | 100n | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C15, C16 |
| 2 | 10u | Capacitor_SMD:C_2220_5750Metric_Pad1.97x5.40mm_HandSolder | C17, C18 |
| 2 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C13, C14 |
| 2 | 2.2M | BB_Resistors:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.5mm_Horizontal | R1, R2 |
| 2 | 22n | Capacitor_THT:C_Rect_L7.2mm_W3.0mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C1, C9 |
| 2 | 4.7u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C6, C7 |
| 2 | SW_DPDT_x2 | BB_Switches:SW_TOGGLE_DPDT_STD_SOLDER | SW1, SW2 |
| 1 | 100p | Capacitor_THT:C_Rect_L7.2mm_W4.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C4 |
| 1 | 10kA | BB_Potentiometers:Potentiometer_16MM | RV3 |
| 1 | 10u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C10 |
| 1 | 1M | BB_Resistors:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.5mm_Horizontal | R8 |
| 1 | 1N4001 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D2 |
| 1 | 1k | BB_Resistors:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.5mm_Horizontal | R3 |
| 1 | 1n | Capacitor_THT:C_Rect_L7.2mm_W4.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C2 |
| 1 | 1u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C12 |
| 1 | 2.2u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C5 |
| 1 | 220u | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C11 |
| 1 | 2N5458 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q1 |
| 1 | 3.3n | Capacitor_THT:C_Rect_L7.2mm_W4.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C8 |
| 1 | 4.7k | BB_Resistors:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.5mm_Horizontal | R18 |
| 1 | 47 | BB_Resistors:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.5mm_Horizontal | R4 |
| 1 | 47p | Capacitor_THT:C_Rect_L7.2mm_W4.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C3 |
| 1 | 560 | BB_Resistors:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.5mm_Horizontal | R5 |
| 1 | 9V1 | BB_Pads:WirePad_22AWG | P1 |
| 1 | IN | BB_Pads:WirePad_22AWG | P4 |
| 1 | LED | LED_THT:LED_D5.0mm | D1 |
| 1 | LED- | BB_Pads:WirePad_22AWG | P2 |
| 1 | LM301 | Package_DIP:DIP-8_W7.62mm_Socket_LongPads | U2 |
| 1 | OUT | BB_Pads:WirePad_22AWG | P6 |
The 61 most common of 64 parts.
Questions
How big is the Rat v2 PCB?
It measures 56 × 60 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Rat v2 use?
64 parts, built around the LM301AN. 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 Rat v2 KiCad files?
From the jer-lil/rat-v2 repository on GitHub, at the commit this page was made from: the board is rat-v2.kicad_pcb and its schematic rat-v2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Rat v2 design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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