
Stm32-io extend
hardenedlinux/cheap-pcb
Cheap PCB: Better understanding the current status of hardware supply chain

KiCAD
STM32F103C8T6 is an open-source printed circuit board by matia6170, from the matia6170/STM32F103C8-Dev-Board repository on GitHub. It is a 2-layer board of 40 × 33 mm with 33 parts on 47 nets, routed with 204 tracks and 25 vias.
It is built around the STM32F103C8T6 and AMS1117-3.3. Its parts include 13 capacitors, 5 resistors, 4 connectors, 2 ICs and 1 diode. It belongs with the STM32 boards of this library.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 100n | Capacitor_SMD:C_0402_1005Metric | C2, C3, C4, C5, C9 |
| 4 | 1k5 | Resistor_SMD:R_0402_1005Metric | R2, R3, R4, R5 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 3 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2, J3, J4 |
| 2 | 10p | Capacitor_SMD:C_0402_1005Metric | C10, C11 |
| 2 | 1u | Capacitor_SMD:C_0402_1005Metric | C7, C8 |
| 2 | 22u | Capacitor_SMD:C_0805_2012Metric | C12, C13 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 10n | Capacitor_SMD:C_0402_1005Metric | C6 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 120R | Capacitor_SMD:C_0805_2012Metric | FB1 |
| 1 | 16MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | LOGO | project_footprints:I | G*** |
| 1 | MICROXNJ | project_footprints:SHOUHAN_MICROXNJ | J1 |
| 1 | RED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | STM32F103C8T6 | Package_QFP:LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | SW_SPDT | Button_Switch_SMD:SW_SPDT_PCM12 | SW1 |

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Cheap PCB: Better understanding the current status of hardware supply chain

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It measures 40 × 33 mm and has 2 copper layers, 1.6 mm thick.
33 parts, built around the STM32F103C8T6 and AMS1117-3.3. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the matia6170/STM32F103C8-Dev-Board repository on GitHub, at the commit this page was made from: the board is STM32F103C8T6.kicad_pcb and its schematic STM32F103C8T6.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask matia6170 before reusing the design.