La104 Firmware Work Jun 2026

There’s something uniquely satisfying about a piece of test equipment that fits in your wallet. The LA104 isn’t just a cute logic analyzer—it’s a hacker’s playground. It runs on an STM32, has a gorgeous 320x240 LCD, and, most importantly, the firmware is open source.

The original firmware limited capture depth to 4K samples per channel. By tweaking the SDRAM initialization (the LA104 has an external 8MB SDRAM), I reallocated a larger ring buffer. Suddenly, I could capture 64K samples at 100MHz. The trade-off? UI responsiveness dropped while the buffer filled—but that’s a problem for future me. la104 firmware work

4 digital channels with up to a 100Msa/s sampling rate. There’s something uniquely satisfying about a piece of

To begin modifying or compiling firmware for the LA104, you need a proper cross-compilation toolchain. The original firmware limited capture depth to 4K