TransitMap

A map of the Seattle light rail network, inspired by but unrelated to https://traintrackr.io.

5x PCBs made and assembled by JLCPCB, most of them are somewhere around the space. The firmware on them just lights up all the LEDs in different colors, we're looking for volunteers to build the software integration to pull actual train status on them.

Microcontroller: ESP32-S3 with 8mb PSRAM and 8mb flash LEDs: SK9822 addressable RGB (compatible with APA102 on the protocol level) Power: 5V via USB-C Programming: ESP32 bootloader over USB-C, debug output available Expansion port: unpopulated 0.1" double row header with some GPIOs, serial (UART) and LED string clock/data broken out on it

All of the design files (KiCad) and demonstration firmware (ESP-IDF C) are available at https://git.devhack.net/vlad/transit-map

You probably want to wait until the software works. If you build that software, you can take one of these boards.

Otherwise, they cost $60 each to make (in the initial batch of 5) and you can have one for that much while they last. If there's interest, we can do a second batch and find ways to make them cheaper (something down to $30 should be doable with some effort).