Forti EC
About the Forti EC PCB
Forti 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 × 82.9 mm, with 123 components from 32 distinct parts.
Its main chip is the USBLC6-2SC6, from the STM32 family. Other key parts include the XC6206PXXXMR-REGULATOR_LINEAR, OPA354, 74HC4051 and STM32F401CBUX. By type, the board carries 24 resistors, 13 capacitors, 6 ICs, 1 crystal, 1 connector and 1 fuse.
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 Forti EC
Forti EC bill of materials (BOM)
123 components, 32 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 |
| 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 |
| 24 | MountingHole | HOLE_M2 | H1, H2, H3, H4, H5, H6, H7, H8 +16 |
| 1 | BOOT0 | PinHeader_1x02_P2.54mm_Vertical | SW1 |
| 33 | Topre | ecs_pad_1U_no_ring | SW_EC1, SW_EC2, SW_EC3, SW_EC4, SW_EC5, SW_EC6, SW_EC7, SW_EC8 +25 |
| 1 | stepped | ecs_pad_no_ring_stepped&normal | SW_EC13 |
| 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 |
| 6 | 1u | ecs_pad_1U_no_ring | SW_EC37, SW_EC38, SW_EC40, SW_EC44, SW_EC46, SW_EC47 |
| 2 | stepped | ecs_pad_no_ring_stepped&normal_cut | SW_EC39, SW_EC45 |
| 2 | split | ecs_pad_no_ring_stepped&normal | SW_EC41, SW_EC43 |
| 1 | 6u 7u | ecs_pad_1U_no_ring | SW_EC42 |
| 1 | ISO | ecs_pad_1U_no_ring | SW_EC48 |
Show 12 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ansi | ecs_pad_1U_no_ring_1u_edge_cut | SW_EC49 |
| 1 | 275u | ecs_pad_1U_no_ring | SW_EC52 |
| 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 | 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 |
Forti 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.
Forti EC: common questions
What microcontroller does the Forti EC use?
The Forti EC is built around the USBLC6-2SC6, from the STM32 family.
How big is the Forti EC PCB?
The Forti EC measures 245.7 × 82.9 mm, has 4 copper layers and is 1.59 mm thick.
How many components are on the Forti EC?
123 components, from 32 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 Forti EC design files?
From the calvin-mcd/Forti 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 Forti 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 Forti 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.
More boards in Forti
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STM32Forti rev 2
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STM32Forti
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STM32Forti rev 3
245.7 × 82.9 mm66 parts2LCC-BY-NC-4.07
STM32Forti rev 4
245.7 × 82.9 mm66 parts2LCC-BY-NC-4.07
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