Wzhooh

dotcypress·wzhooh·pcb/wzhooh.kicad_pcb

About the Wzhooh PCB

Wzhooh is an open source RP2040/RP2350 PCB design by dotcypress, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 75.1 × 85 mm, with 44 components from 16 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. Other key parts include the ULN2803A and DA08-11SURKWA. By type, the board carries 23 resistors, 6 transistors, 5 ICs, 4 capacitors, 3 connectors and 3 switches.

From the project

Slot Car Lap Timer

- Web dashboard - Schematics - Gerber files - BOM - Interactive BOM

1. Download latest firmware build from Releases page 2. Hold the BOOTSEL button while connecting your board to the computer 3. Copy firmware file downloaded earlier to the RPi-RP2 disk 4. Enjoy

1. Install rustup by following the instructions at https://rustup.rs 2. Install Cortex-M0, M0+, and M1 (ARMv6-M architecture) target: rustup target add thumbv6m-none-eabi 3. Install LLVM tools: rustup component add llvm-tools-preview 4. Install cargo-binutils: cargo install cargo-binutils (Note: on some Linux distros (e.g. Ubuntu)…

Wzhooh, from the project README — From the project README

Main components on the Wzhooh

ULN2803A Pico DA08-11SURKWA

Wzhooh bill of materials (BOM)

44 components, 16 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	ULN2803A	DIP-18_W7.62mm	U1
1	Pico	RPi_Pico_SMD_TH	U2
3	DA08-11SURKWA	DA08-11	U3, U4, U5
5	2N2907	TO-92_Inline	Q1, Q2, Q3, Q4, Q5
1	2N3905	TO-92_Inline	Q6
1	Sensor1	PinHeader_1x03_P2.54mm_Horizontal	J1
1	Sensor2	PinHeader_1x03_P2.54mm_Horizontal	J2
1	Sensor3	PinHeader_1x03_P2.54mm_Horizontal	J3
1	Button1	SW_PUSH_6mm_H13mm	SW1
1	Button2	SW_PUSH_6mm_H13mm	SW2
1	Button3	SW_PUSH_6mm_H13mm	SW3
3	1nF	C_Disc_D4.7mm_W2.5mm_P5.00mm	C1, C2, C3
1	10uF	CP_Radial_D7.5mm_P2.50mm	C4
8	33Ω	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R1, R2, R3, R4, R5, R6, R7, R8
12	330Ω	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R9, R11, R12, R14, R15, R17, R18, R19 +4
3	100KΩ	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R10, R13, R16

Wzhooh design files

The KiCad project lives in the dotcypress/wzhooh repository on GitHub; these links point at the commit this page was built from.

Wzhooh: common questions

What microcontroller does the Wzhooh use?

The Wzhooh is built around the Pico, from the RP2040/RP2350 family.

How big is the Wzhooh PCB?

The Wzhooh measures 75.1 × 85 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Wzhooh?

44 components, from 16 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Wzhooh design files?

From the dotcypress/wzhooh repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Wzhooh design in my own project?

Yes, under the terms of its Apache-2.0 license, which dotcypress chose for the repository.

Can I test firmware for the Wzhooh without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.