Lethal toothpaste
About the Lethal toothpaste PCB
Lethal toothpaste is an open source STM32 PCB design by Gripsou, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 30.5 × 30.5 mm, with 68 components from 11 distinct parts.
Its main chip is the STM32F446RET6, from the STM32 family. By type, the board carries 53 connectors, 11 capacitors, 1 IC, 1 crystal, 1 fuse and 1 resistor.
From the project
MCU socket PCBs used as a base for later projects.
This is the repository for STM32 sockets.
Main components on the Lethal toothpaste
Lethal toothpaste bill of materials (BOM)
68 components, 11 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32F446RET6 | LQFP_64 | U10 |
| 1 | 16MHz | QUARTZ_TSX_3225 | X10 |
| 4 | — | PAD_CASTELLATED_HOLE_CORNER | P1, P14, P27, P40 |
| 48 | — | PAD_1_1.5_1.2 | P2, P3, P4, P5, P6, P7, P8, P9 +40 |
| 1 | GH | JST_GH_5F | P53 |
| 1 | BEAD | FERRITE_0805 | F10 |
| 2 | 4.7uF | 0805_GRM | C10, C17 |
| 6 | 0.1uF | 0805_GRM | C11, C12, C13, C14, C16, C20 |
| 1 | 1uF | 0805_GRM | C15 |
| 2 | 10PF | 0805_GRM | C18, C19 |
| 1 | 10k | RES_0805_ERJ | R10 |
Lethal toothpaste design files
The KiCad project lives in the Gripsou/lethal-toothpaste repository on GitHub; these links point at the commit this page was built from.
Lethal toothpaste: common questions
What microcontroller does the Lethal toothpaste use?
The Lethal toothpaste is built around the STM32F446RET6, from the STM32 family.
How big is the Lethal toothpaste PCB?
The Lethal toothpaste measures 30.5 × 30.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Lethal toothpaste?
68 components, from 11 distinct parts. The full bill of materials is listed on this page.
Where can I download the Lethal toothpaste design files?
From the Gripsou/lethal-toothpaste repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Lethal toothpaste design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which Gripsou chose for the repository.
Can I test firmware for the Lethal toothpaste without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
Similar boards
STM32LumenPnP Motherboard
opulo-inc
149 × 95 mm296 parts4LCC-BY-SA-4.03.7k
STM32AxxSolder
AxxAxx
39 × 82.5 mm122 parts2LGPL-3.01.7k
STM32LibreVNA
jankae
122 × 98 mm592 parts6LGPL-3.01.6k
STM32AIOC
skuep
21 × 31.5 mm47 parts2LMIT1.4k
STM32Ferris
pierrechevalier83
208.8 × 86.8 mm102 parts2LSHL-2.11.3k
STM32176 pin board
rusefi
61.8 × 73.2 mm76 parts2LGPL-3.01.2k