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Linux SBC · SBC
Le Potato (AML-S905X-CC)
A Raspberry Pi 3-footprint SBC with upstream Linux support and a 40-pin GPIO header, often used as a drop-in Pi alternative for headless projects.
Processor
Amlogic S905X quad-core Arm Cortex-A53
Logic
3.3 V GPIO
Power
5 V micro-USB
Format
Raspberry Pi 3 Model B footprint
Check before wiring
- 40-pin header is mechanically Pi-like but electrically different; use Libre Computer's pin maps.
- No onboard Wi-Fi/Bluetooth; Ethernet is 100 Mbit.
- GPIO is 3.3 V only.
Interfaces
GPIOI2CSPIUARTADCPWMUSBEthernet
Source-backed connector
Interactive pin map
Pin map
Connector
7J1 40-pin GPIO header
Component side up, 40-pin GPIO header along the top edge
Simplified technical illustration. Pin data is source-backed; verify against the linked documentation before wiring.
Hover, tap, or focus a pad to inspect a pin. Use arrow keys to move between pins.
- GPIO is 3.3 V by default; an unsupported resistor modification can change the GPIOX bank to 1.8 V.
- Pin 11 is routed to GPIOAO_8 only when jumper 2J1 is moved away from its default HDMI CEC position.
- Pin 15 is output-only and doubles as a low-active system reset signal.
All 40 pins (table)
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| 1 | Power | 3V3 | ||
| 3 | I2C | I2C | I2C SDA AO / UART RX AO B | |
| 5 | I2C | I2C | I2C SCL AO / UART TX AO B | |
| 7 | Alt | CLK24 / CLK12 | ||
| 9 | Ground | GND | ||
| 11 | Alt | HDMI CEC / PWM AO A | ||
| 13 | Alt | SPDIF OUT / PWM AO B | ||
| 15 | System | Output-only; low can reset the system. | ||
| 17 | Power | 3V3 | ||
| 19 | SPI | SPI | SPI MOSI / UART TX C / PCM OUT | |
| 21 | SPI | SPI | SPI MISO / UART RX C / PCM IN | |
| 23 | SPI | SPI | SPI SCLK / I2C SCL D / PCM CLK | |
| 25 | Ground | GND | ||
| 27 | I2C | I2C | I2C SDA A/B / UART CTS B | |
| 29 | GPIO | BT EN | ||
| 31 | GPIO | BT WAKE HOST | ||
| 33 | PWM | Wi-Fi PWREN / PWM A | ||
| 35 | PWM | Wi-Fi WAKE HOST / PWM F | ||
| 37 | Alt | Wi-Fi SD CMD | ||
| 39 | Ground | GND | ||
| 2 | Power | 5V | ||
| 4 | Power | 5V | ||
| 6 | Ground | GND | ||
| 8 | UART | UART | UART A TX | |
| 10 | UART | UART | UART A RX | |
| 12 | Alt | SPDIF OUT / PWM AO B | ||
| 14 | Ground | GND | ||
| 16 | UART | UART | UART A CTS | |
| 18 | UART | UART | UART A RTS | |
| 20 | Ground | GND | ||
| 22 | GPIO | Wi-Fi SD D0 | ||
| 24 | SPI | SPI | SPI SS0 / I2C SDA D / PCM FS | |
| 26 | GPIO | Wi-Fi SD D1 | ||
| 28 | I2C | I2C | I2C SCL A/B / UART RTS B | |
| 30 | Ground | GND | ||
| 32 | PWM | Wi-Fi 32K / PWM E | ||
| 34 | Ground | GND | ||
| 36 | GPIO | Wi-Fi SD D2 | ||
| 38 | GPIO | Wi-Fi SD D3 | ||
| 40 | Alt | Wi-Fi SD CLK |
Why it matters
- Mechanically matches Pi 3 cases and HAT spacing.
- Strong upstream Linux/u-boot support from the vendor.
- eMMC interface plus microSD boot.
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