Rimer SBC

Details

A complete single-board computer based on ATSAMD51J20A (ARM Cortex-M4) microcontroller and consists of LCD, 40 keys mechanical keyboard, speaker, microSD card slot, USBC connector, three ports of ESD protected GPIOs, optional battery (flat or 18650).

Initially, this platform was developed to get instant access to serial buses - I2C, SPI, and UART. Also, I used it for rapid firmware development since it runs a FreeRTOS-based shell with access to real-time peripherals yet has high-level services like CLI, SD FAT access, scripting, etc.

Although there are many ARM Cortex-M4 development boards and evaluation systems, they all demand a PC to be programmed and managed. At the same time, Rimer SBC provides you with instant access to all chip peripherals directly from the board.

Key Features

Microcontroller: Atmel ATSAMD51J20A (ARM Cortex-M4F)
Memory: 1MB Flash, 256 RAM
Display: 3.2-inch IPS LCD (240x320 resolution) with optional capacitive touchscreen, running up to 60 FPS
Input: 40-key keyboard
Storage: SD card slot,64KB I2C EEPROM
Audio: Onboard speaker
Connectivity:
- USB 2.0 via USB-C connector
- 1x Serial port (UART, I2C) with 3.3V @ 125mA power output
- 2x 6-lane GPIO ports with 3.3V @ 300mA each and configurable as:
  - Digital I/O
  - SPI
  - UART
  - USART
  - I2C
  - TC
  - TCC
Analog I/O routed to 3.5mm audio jack.
Power:
- External power supply via USB-C
- Battery options:
  - 20mm x 60mm LIPO battery with onboard charger
  - 16850 battery socket with onboard charger