The Deskcast blog

The ideas behind a desk-sized market display, and the engineering that makes it work: firmware, hardware and the bugs that cost the most time.

• 27 October 2026 · 3 min read

  Why I’m building a stock ticker for your desk, and why it isn’t another app

  Deskcast is a small LED display that shows the stock or crypto you keep checking: live price, the day’s move and the intraday chart. What it is, the idea behind it, and how it works.

• 27 October 2026 · 5 min read

  Building a live stock ticker on an ESP32-S3: the architecture, the memory budget, the mistakes

  How a 128×64 HUB75 LED panel, an ESP32-S3 and 22 KB of spare RAM became a live desk stock ticker: the hardware, the firmware design, signed OTA updates and the bugs that cost the most.