PowerCube
About the PowerCube PCB
PowerCube is an open source STM32 PCB design by akkdong, published on GitHub. It is a 2-layer board measuring 200 × 50 mm, with 50 components from 28 distinct parts.
Its main chip is the WEACT-STM32G474, from the STM32 family. Other key parts include the TPS77733_SO8. By type, the board carries 19 resistors, 9 capacitors, 6 modules, 6 diodes, 5 transistors and 2 connectors.
From the project
PowerCube - Power Bank - GPS - Variometer - Bluetooth
PowerCube - Power Bank - GPS - Variometer - Bluetooth
Goal: Charge mobile phone while transmitting GPS & Variometer data. It can also support BT connectivity.
Main components on the PowerCube
PowerCube bill of materials (BOM)
50 components, 28 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS77733_SO8 | DIP-8_W7.62mm_Socket | U1 |
| 1 | INA226-MOD | INA226-MOD | M1 |
| 1 | HUSB238-USBPD | HUSB238-USBPD | M2 |
| 1 | USBC-MOD | USBC-MOD | M3 |
| 1 | WEACT-STM32G474 | WEACT-STM32G747 | M4 |
| 1 | BlueM-D100 | BlueM-D100 | M5 |
| 1 | BMP280-MOD | BMP280-MOD | M6 |
| 3 | IRF7404 | DIP-8_W7.62mm_Socket | Q1, Q2, Q4 |
| 2 | IRF7403 | DIP-8_W7.62mm_Socket | Q3, Q5 |
| 1 | Conn_01x03 | PinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | Conn_01x04 | GOOUUU-GPS-BD | J2 |
| 1 | SW_Push | SW_Tactile_SPST_Angled_PTS645Vx39-2LFS | SW1 |
| 1 | RED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | GREEN | LED_D3.0mm_Horizontal_O1.27mm_Z6.0mm | D2 |
| 2 | 1N4148W | D_SOD-123 | D3, D4 |
| 1 | BLUE | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D5 |
| 1 | SS34 | D_SMA | D6 |
| 1 | Ferrite | L_Axial_L5.3mm_D2.2mm_P10.16mm_Horizontal_Vishay_IM-1 | L1 |
| 4 | 1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C4, C7, C9 |
| 2 | 0.1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C6 |
Show 8 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 1000pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C5 |
| 1 | 10uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8 |
| 4 | 47K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R9, R10, R15 |
| 7 | 1K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R3, R5, R11, R17, R18, R19 |
| 2 | 10K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R12 |
| 2 | 200K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6, R16 |
| 3 | 330R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R13, R14 |
| 1 | 40.2K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8 |
PowerCube design files
The KiCad project lives in the akkdong/PowerCube repository on GitHub; these links point at the commit this page was built from.
PowerCube: common questions
What microcontroller does the PowerCube use?
The PowerCube is built around the WEACT-STM32G474, from the STM32 family.
How big is the PowerCube PCB?
The PowerCube measures 200 × 50 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the PowerCube?
50 components, from 28 distinct parts. The full bill of materials is listed on this page.
Where can I download the PowerCube design files?
From the akkdong/PowerCube repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the PowerCube design in my own project?
The repository has no license, so all rights stay with akkdong. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the PowerCube 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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