2 layers109.5 × 66 mm
2 layers89.5 × 85.5 mm
Trial error
Morethanmany2/PCB-StACKS- Size
- 89.5 × 85.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 32
- Nets
- 103
- Pads
- 247
- Tracks, vias
- 767, 167
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 28 May 2026
- Updated
- 28 May 2026
Overview
Trial error is an open-source printed circuit board by Morethanmany2, from the Morethanmany2/PCB-StACKS repository on GitHub. It is a 2-layer board of 89.5 × 85.5 mm with 32 parts on 103 nets, routed with 767 tracks and 167 vias.
It is built around the ESP32-WROOM-32 and AP2112K-3.3. Its parts include 12 capacitors, 8 connectors, 7 ICs, 3 resistors and 2 transistors. It belongs with the ESP32 boards of this library.
Main components
2README
README.mdPCB-StACKS
Parts
32| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 100uf | Capacitor_SMD:CP_Elec_6.3x5.4 | C8, C9, C10, C11, C12 |
| 4 | 0.1uF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C1, C5, C6, C7 |
| 4 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal | J2, J3, J4, J5 |
| 4 | DRV8825_STEPPER_MOTOR_DRIVER_CARRIER | Module:Pololu_Breakout-16_15.2x20.3mm | U3, U5, U6, U7 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R2, R3 |
| 2 | 10uF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C2, C3 |
| 2 | Q_NPN_BEC | Package_TO_SOT_SMD:SOT-23 | Q1, Q3 |
| 2 | Screw_Terminal_01x02 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J1, J6 |
| 1 | 1uF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C4 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | CP2102N-Axx-xQFN28 | Package_DFN_QFN:QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U2 |
| 1 | Conn_01x02_Socket | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Horizontal | J7 |
| 1 | ESP32-WROOM-32 | RF_Module:ESP32-WROOM-32 | U1 |
| 1 | USB_C_Plug_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | P1 |
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Questions
How big is the Trial error PCB?
It measures 89.5 × 85.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Trial error use?
32 parts, built around the ESP32-WROOM-32 and AP2112K-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 Trial error KiCad files?
From the Morethanmany2/PCB-StACKS repository on GitHub, at the commit this page was made from: the board is Trial_error/Trial_error.kicad_pcb and its schematic Power plane test/Power plane test.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Trial error design in my own project?
Its repository states no licence, so its author keeps all rights: ask Morethanmany2 before reusing the design.