Plate EC
About the Plate EC PCB
Plate EC is an open source STM32 PCB design by calvin-mcd, published on GitHub under the CC-BY-NC-4.0 license. It is a 4-layer board measuring 245.7 × 83.6 mm, with 147 components from 35 distinct parts.
Its main chip is the STM32F401CBUX, from the STM32 family. Other key parts include the USBLC6-2SC6, XC6206PXXXMR-REGULATOR_LINEAR, OPA354, 74AHCT1G125 and 74HC4051. By type, the board carries 24 resistors, 18 LEDs, 14 capacitors, 7 ICs, 1 crystal and 1 connector.
It belongs with the keyboards designs in this gallery.
From the project
13u pcb for Førti
The F�rti pcb (40 in Norwegian) is a 13u 40% pcb with full basekit support for the upcoming F�rti keyboard case created and designed by xonuss and xezioh that is based on Geon's F1-8x. The pcb takes its layout and design cues from the oxymoron, bully and ttocyobitna amongst others. It's a stm32 based pcb for low cost, good performance.
- [X] order & test pcb - [X] create firmware - [X] order & test case - [ ] revise mx pcb - [ ] create HS & EC pcbs (work-in-progress)
Main components on the Plate EC
Plate EC bill of materials (BOM)
147 components, 35 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | USBLC6-2SC6 | SOT-23-6 | U1 |
| 1 | XC6206PXXXMR-REGULATOR_LINEAR XC6206PxxxMR-Regulator_Linear | SOT-23 | U2 |
| 1 | OPA354 | SOT-23-5 | U3 |
| 1 | 74AHCT1G125 | TSOT-23-5 | U4 |
| 2 | 74HC4051 | TSSOP16 | U5, U7 |
| 1 | STM32F401CBUX STM32F401CBUx | QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U8 |
| 1 | C907975 8 MHz | Resonator_SMD_Murata_CSTxExxV-3Pin_3.0x1.1mm | Y1 |
| 1 | USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0 | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J2 |
| 1 | SMF9.0CA | D_SOD-123 | D_PWR1 |
| 1 | 500MA 500mA | Fuse_1206_3216Metric | F1 |
| 26 | MountingHole | HOLE_M2 | H1, H2, H3, H4, H5, H6, H7, H8 +18 |
| 1 | BOOT0 | PinHeader_1x02_P2.54mm_Vertical | SW1 |
| 34 | Topre | ecs_pad_1U_no_ring | SW_EC1, SW_EC2, SW_EC3, SW_EC4, SW_EC5, SW_EC6, SW_EC7, SW_EC8 +26 |
| 5 | stepped | ecs_pad_no_ring_stepped&normal | SW_EC13, SW_EC37, SW_EC40, SW_EC44, SW_EC47 |
| 1 | Topre | ecs_pad_1U_no_ring_1u_edge_cut | SW_EC23 |
| 2 | 1u, 175u | ecs_pad_no_ring_1u1.75u | SW_EC35, SW_EC36 |
| 3 | 1u | ecs_pad_1U_no_ring_1u_edge_cut | SW_EC38, SW_EC60, SW_EC61 |
| 2 | 1u | ecs_pad_no_ring_stepped&normal_cut | SW_EC39, SW_EC45 |
| 2 | Topre | ecs_pad_no_ring_stepped&normal | SW_EC41, SW_EC43 |
| 1 | 1u | ecs_pad_1U_no_ring | SW_EC46 |
Show 15 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ISO | ecs_pad_1U_no_ring | SW_EC48 |
| 1 | ansi | ecs_pad_1U_no_ring_1u_edge_cut | SW_EC49 |
| 1 | 275u | ecs_pad_1U_no_ring | SW_EC52 |
| 18 | WS2812_2020 | LED_WS2812_2020 | LED1, LED2, LED3, LED15, LED16, LED17, LED18, LED19 +10 |
| 2 | 1UF 1uF | C_0603_1608Metric | C1, C2 |
| 8 | 100N 100n | C_0402_1005Metric | C3, C10, C15, C17, C18, C19, C20, C21 |
| 1 | C1530 220pF NP0 | C_0402_1005Metric | C4 |
| 1 | 100NF 100nF | C_0603_1608Metric | C12 |
| 1 | 4.7U 4.7u | C_0402_1005Metric | C16 |
| 1 | 1UF 1u | C_0402_1005Metric | C22 |
| 2 | 5K1 5k1 | R_0603_1608Metric | R1, R2 |
| 14 | 100K 100k | R_0402_1005Metric | R4, R5, R6, R7, R8, R9, R11, R12 +6 |
| 4 | 100 | R_0402_1005Metric | R19, R20, R21, R22 |
| 1 | 1k | R_0402_1005Metric | R23 |
| 3 | 10K 10k | R_0402_1005Metric | R24, R25, R27 |
Plate EC design files
The KiCad project lives in the calvin-mcd/Forti repository on GitHub; these links point at the commit this page was built from.
Plate EC: common questions
What microcontroller does the Plate EC use?
The Plate EC is built around the STM32F401CBUX, from the STM32 family.
How big is the Plate EC PCB?
The Plate EC measures 245.7 × 83.6 mm, has 4 copper layers and is 1.59 mm thick.
How many components are on the Plate EC?
147 components, from 35 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 Plate EC design files?
From the calvin-mcd/Forti repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Plate EC design in my own project?
It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.
Can I test firmware for the Plate EC 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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