Expansion Card circuit based on RP2350 for Framework mainboards providing GPIO to the computer. Circuit is based on Expansion Card template and RP2350A Minimal board. Designed in KiCad. It got produced and assembled. Its fully functional.
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Real photo of card with TYPEC-950-ARP24 produced by NextPCB
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Render of card with Molex 1054440011 (Framework template)
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Render of card with TYPEC-950-ARP24 (NextPCB template)
| Label | Name | SPI | UART | I2C | ADC |
|---|---|---|---|---|---|
| 0 | GPIO0 | SPI0 RX | UART0 TX | I2C0 SDA | |
| 1 | GPIO1 | SPI0 CSn | UART0 RX | I2C0 SCL | |
| 2 | GPIO2 | SPI0 SCK | I2C1 SDA | ||
| 3 | GPIO3 | SPI0 TX | I2C1 SCL | ||
| 4 | GPIO4 | SPI0 RX | UART1 TX | I2C0 SDA | |
| 5 | GPIO5 | SPI0 CSn | UART1 RX | I2C0 SCL | |
| 6 | GPIO6 | SPI0 SCK | I2C1 SDA | ||
| 7 | GPIO7 | SPI0 TX | I2C1 SCL | ||
| VCC | 3.3v | ||||
| R | Reset |
| Label | Name | SPI | UART | I2C | ADC |
|---|---|---|---|---|---|
| 29 | GPIO29 | ADC3 | |||
| 28 | GPIO28 | ADC2 | |||
| 27 | GPIO27 | I2C1 SDL | ADC1 | ||
| G | Ground | ||||
| 13 | GPIO13 | SPI1 CSN | UART0 RX | I2C0 SCL | |
| 12 | GPIO12 | SPI1 RX | UART0 TX | I2C0 SDA | |
| 11 | GPIO11 | SPI1 TX | I2C1 SCL | ||
| 10 | GPIO10 | SPI1 SCK | I2C1 SDA | ||
| 9 | GPIO9 | SPI1 CSn | UART1 RX | I2C0 SCL | |
| B | Boot |
Designed by: Tan Siret Akıncı.
Schematics and footprint are licensed with CC BY 4.0.
Politecnico di Torino name used in this project is © 2025 Politecnico di Torino. The project is sponsored by © 2025 DeepComputing and © 2025 NextPCB.
The project has been certified by OSHWA as Open Source Hardware (UID: IT000024).
