Inverter vcu
Vaaarad07·PCB_Designs·STM32F103_InverterVCU/inverter_vcu.kicad_pcb
About the Inverter vcu PCB
Inverter vcu is an open source STM32 PCB design by Vaaarad07, published on GitHub under the MIT license. It is a 2-layer board measuring 69.9 × 65.4 mm, with 49 components from 24 distinct parts.
Its main chip is the STM32F103C8Tx, from the STM32 family. Other key parts include the MCP2551-I-SN, LM7805_TO220 and AMS1117-3.3. By type, the board carries 16 connectors, 15 capacitors, 9 resistors, 4 ICs, 2 LEDs and 1 crystal.
It belongs with the usb & debug tools designs in this gallery.
From the project
A repo with STM32 based PCB designs

Main components on the Inverter vcu
Inverter vcu bill of materials (BOM)
49 components, 24 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32F103C8Tx | LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | MCP2551-I-SN | SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | LM7805_TO220 | TO-220-3_Vertical | U3 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U4 |
| 1 | Crystal | Crystal_HC49-U_Vertical | Y1 |
| 4 | Conn_01x03_Male | PinHeader_1x03_P2.54mm_Vertical | J1, J9, J14, J17 |
| 3 | Conn_01x07_Male | JST_EH_B7B-EH-A_1x07_P2.50mm_Vertical | J2, J15, J16 |
| 3 | Conn_01x02_Male | JST_NV_B02P-NV_1x02_P5.00mm_Vertical | J3, J4, J5 |
| 2 | Conn_01x01_Male | PinHeader_1x01_P2.54mm_Vertical | J6, J7 |
| 2 | Conn_01x04_Male | PinHeader_1x04_P2.54mm_Vertical | J8, J11 |
| 1 | Conn_01x02_Male | PinHeader_1x02_P2.54mm_Vertical | J10 |
| 1 | Conn_01x02_Male | PhoenixContact_MSTBVA_2,5_2-G-5,08_1x02_P5.08mm_Vertical | J13 |
| 1 | SW_Push | SW_PUSH_6mm_H5mm | SW1 |
| 2 | LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | 3v3, 5V |
| 1 | LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 2 | 10uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C11 |
| 6 | 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C3, C4, C5, C6, C7 |
| 1 | 1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8 |
| 2 | 30pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9, C10 |
| 1 | 22uF | CP_Radial_D5.0mm_P2.50mm | C12 |
Show 4 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 22uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C13, C14 |
| 1 | 22uF | CP_Radial_D5.0mm_P2.00mm | C15 |
| 3 | 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R10, R15 |
| 6 | 1.5k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R3, R4, R16, R17, R18 |
Inverter vcu design files
The KiCad project lives in the Vaaarad07/PCB_Designs repository on GitHub; these links point at the commit this page was built from.
Inverter vcu: common questions
What microcontroller does the Inverter vcu use?
The Inverter vcu is built around the STM32F103C8Tx, from the STM32 family.
How big is the Inverter vcu PCB?
The Inverter vcu measures 69.9 × 65.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Inverter vcu?
49 components, from 24 distinct parts. The full bill of materials is listed on this page.
Where can I download the Inverter vcu design files?
From the Vaaarad07/PCB_Designs repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Inverter vcu design in my own project?
Yes, under the terms of its MIT license, which Vaaarad07 chose for the repository.
Can I test firmware for the Inverter vcu 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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