FS-4 Charging Board
About the FS-4 Charging Board
FS-4 Charging Board is an open source STM32 PCB design by formulaslug, published on GitHub. It is a 2-layer board measuring 55.3 × 95.6 mm, with 59 components from 36 distinct parts.
Its main chip is the STM32G441KBT6, from the STM32 family. Other key parts include the AP63205WU-7, ISO1044BDR, BT817Q-R, AP3019AKTR-G1 and MIC5504-3.3YM5-TR. By type, the board carries 27 capacitors, 12 resistors, 8 connectors, 6 ICs, 3 inductors and 1 crystal.
From the project
Electrical Design Repository for fs-4 schematics and PCBs
Please complete KiCad training before beginning or working on any projects in this repository.
Only edit another person's work if you have spoke about it with them first and they have given you permission. This applies to Leads and Captains as well.
Contact Cole Lewis, Nathaniel Platt, or Wesley Rodriguez Kronmiller or Jack Nystrom for information/help relating to this repository.
Main components on the FS-4 Charging Board
FS-4 Charging Board bill of materials (BOM)
59 components, 36 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AP63205WU-7 AP63205WU | TSOT-23-6 | U1 |
| 1 | ISO1044BDR ISO1044BD | SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | STM32G441KBT6 STM32G441KBTx | LQFP-32_7x7mm_P0.8mm | U3 |
| 1 | BT817Q-R BT817Q | VQFN-64-1EP_9x9mm_P0.5mm_EP7.15x7.15mm | U5 |
| 1 | AP3019AKTR-G1 AP3019AKTR | SOT-23-6 | U6 |
| 1 | MIC5504-3.3YM5-TR MIC5504-3.3YM5 | SOT-23-5 | U7 |
| 1 | ECS-240-8-37B-CKY-TR | Crystal_SMD_2016-4Pin_2.0x1.6mm | Y2 |
| 1 | ATS15-26PB-BM01 Conn_02x13_Counter_Clockwise | ATS15-26PB-BM01 | J1 |
| 1 | 1053091204 Conn_01x04 | Molex_Nano-Fit_105309-xx04_1x04_P2.50mm_Vertical | J2 |
| 1 | 1053091102 TSMP_to_HV | Molex_Nano-Fit_105309-xx02_1x02_P2.50mm_Vertical | J6 |
| 1 | 1053091102 TSMP_to_Banana Jacks | Molex_Nano-Fit_105309-xx02_1x02_P2.50mm_Vertical | J7 |
| 1 | 1053091102 J1772_Negotiation | Molex_Nano-Fit_105309-xx02_1x02_P2.50mm_Vertical | J8 |
| 1 | F32D-1A7Y1-21040 Conn_01x40_MountingPin | CONN_F32D-1A7Y1-21040_AMP | J9 |
| 1 | 1053101112 everything_connector | Molex_Nano-Fit_105310-xx12_2x06_P2.50mm_Vertical | J12 |
| 1 | FTSH-107-01-F-DV-K-P-TR | PinHeader_2x07_P1.27mm_Vertical_SMD | J13 |
| 1 | Y97KT23B5NAFP | SW_SPST_PTS647_Sx38 | SW1 |
| 1 | SMD110PL-TP D | D_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | FCM1608KF-601T03 FCM_1608KF-601T03 | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB2 |
| 1 | SRP5030TA-4R7M 4.7uH | L_Bourns_SRP5030T | L1 |
| 1 | CDRH5D28NP-220NC 22uH | CDRH5D28NP-220NC | L2 |
Show 16 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 14 | CC0603KRX7R9BB104 100nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C4, C5, C6, C7, C8, C9, C10 +6 |
| 2 | CC0603DRNPO9BN6R8 6.8pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C3 |
| 3 | CL10A106KO8NQNC 10uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C11, C12, C31 |
| 6 | CC0603KRX5R8BB105 1uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C16, C17, C23, C24, C26, C34 |
| 1 | CL21A476MQYNNNE 47uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C22 |
| 1 | CC0603KRX7R8BB224 220nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C29 |
| 1 | AC0603FR-0710KL 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | RK73H2ETTD4R99F 4.99 | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R2 |
| 1 | RC0603FR-071K6L 1600 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 2 | WNE5K0FET 5k | R_Axial_DIN0922_L20.0mm_D9.0mm_P25.40mm_Horizontal | R5, R6 |
| 1 | RMCF0603FT866R 866 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7 |
| 1 | RC0603FR-07330RL 330 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8 |
| 2 | RMCF0603JT330K 330k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R9, R13 |
| 1 | CRCW0603499KFKEA 499k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10 |
| 1 | ERA-3AEB121V 120 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11 |
| 1 | ERA-3AEB204V 200k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R12 |
FS-4 Charging Board design files
The KiCad project lives in the formulaslug/fs-4-schematics repository on GitHub; these links point at the commit this page was built from.
FS-4 Charging Board: common questions
What microcontroller does the FS-4 Charging Board use?
The FS-4 Charging Board is built around the STM32G441KBT6, from the STM32 family.
How big is the FS-4 Charging Board?
The FS-4 Charging Board measures 55.3 × 95.6 mm, has 2 copper layers and is 1.53 mm thick.
How many components are on the FS-4 Charging Board?
59 components, from 36 distinct parts. The full bill of materials is listed on this page.
Where can I download the FS-4 Charging Board design files?
From the formulaslug/fs-4-schematics repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the FS-4 Charging Board design in my own project?
The repository has no license, so all rights stay with formulaslug. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the FS-4 Charging Board 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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