AlcatelLeft
About the AlcatelLeft PCB
AlcatelLeft is an open source STM32 PCB design by nearestexit, published on GitHub under the MIT license. It is a 2-layer board measuring 278.7 × 117.2 mm, with 109 components from 16 distinct parts.
Its main chip is the STM32F072CBTx, from the STM32 family. Other key parts include the XC6206PxxxMR. By type, the board carries 77 diodes, 16 resistors, 9 capacitors, 4 connectors, 2 ICs and 1 transistor.
It belongs with the keyboards designs in this gallery.
From the project
Custom keyboard using the caps from the Alcatel-Lucent MMK, built with Onshape and KiCad
Custom keyboard designed to use the GMK keycaps from the Alcatel-Lucent MMK. Designed in Onshape and KiCad. Powered by QMK.
I designed this for fun. It is not an entry-level keyboard, and it is not intended for a Group Buy. I'm sharing the production and source files with the goal of serving as a reference for other designers.
Case Source (Onshape): https://cad.onshape.com/documents/5081b96c77523c56bb0f8f6b/w/91dc47074a8fd3b0ca2e25d0/e/6e8ed4262c52380f9f8bfe9b
Main components on the AlcatelLeft
AlcatelLeft bill of materials (BOM)
109 components, 16 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32F072CBTx | LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | XC6206PxxxMR | SOT-23-3 | U3 |
| 1 | MMBF170 | SOT-23 | Q2 |
| 1 | Conn_01x20_Pin | CONN-SMD_20P-P0.50_10051922-2010ELF | J1 |
| 1 | Conn_01x05 | PinHeader_1x05_P2.54mm_DEBUG | J2 |
| 1 | Conn_01x02 | PinHeader_1x02_P2.54mm_BOOT | J4 |
| 1 | Conn_01x04_MountingPin | JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J5 |
| 1 | LED_CAPS1 | LED_MX_3mm_Offset_Flipped | D19 |
| 75 | D_Small | D_SOD-123_ShiftedSilkscreen | D22, D23, D24, D25, D26, D27, D29, D30 +67 |
| 1 | LED_CAPS2 | LED_MX_3mm_Offset | D106 |
| 3 | 1u | C_0805_2012Metric | C5, C6, C10 |
| 4 | 100n | C_0603_1608Metric | C7, C9, C11, C14 |
| 2 | 4.7u | C_0603_1608Metric | C8, C15 |
| 2 | 10k | R_0805_2012Metric | R1, R2 |
| 13 | 470 | R_0805_2012Metric | R3, R4, R5, R6, R7, R8, R9, R10 +5 |
| 1 | 1k | R_0805_2012Metric | R22 |
AlcatelLeft design files
The KiCad project lives in the nearestexit/alcatel100 repository on GitHub; these links point at the commit this page was built from.
AlcatelLeft: common questions
What microcontroller does the AlcatelLeft use?
The AlcatelLeft is built around the STM32F072CBTx, from the STM32 family.
How big is the AlcatelLeft PCB?
The AlcatelLeft measures 278.7 × 117.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the AlcatelLeft?
109 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 AlcatelLeft design files?
From the nearestexit/alcatel100 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 AlcatelLeft design in my own project?
Yes, under the terms of its MIT license, which nearestexit chose for the repository.
Can I test firmware for the AlcatelLeft 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.
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