An interactive-speed Linux computer made of only 3 8-pin chips
a year ago
- #DIY Electronics
- #Linux
- #Minimal Computing
- The author designed a minimal, easy-to-assemble Linux computer using only 8-pin chips.
- The goal was to create a kit that could run Debian Linux, vi, gcc, and make with minimal hardware: 8MB RAM, 1 MIPS CPU, SD card, and USB.
- The design uses 8-pin chips for simplicity, including a USB-to-serial bridge (PL2303GL) and an 8MB PSRAM chip.
- Pin limitations led to creative solutions, such as sharing pins between RAM and SD card using SDIO protocol.
- The STM32G031 microcontroller was chosen, with overclocking capabilities up to 148MHz for better performance.
- A custom bootloader was developed to update firmware via SD card and manage system configurations.
- The boot process mimics a PC, loading stages from the SD card to boot Linux.
- Assembly instructions are provided, emphasizing ease for beginners with minimal soldering experience.
- The final product boots Debian Linux, supports basic development tools, and includes a swap file for better RAM management.
- The project is open for DIY assembly or as a potential kit for sale.