DIY GPS Speed Tracker for RC Cars (with TTGO T-Display)

This is a DIY GPS-based speed and drag timing device, designed as an alternative to the SkyRC GNS tracker. It measures RC car speed and acceleration using GPS data, displayed live on a built-in TFT screen.

Live speed and drag times (like 0–50 km/h) are shown on screen. The case fits components tightly and is designed for outdoor use with RC vehicles.

Full electronics, wiring, firmware and use-case demonstration are shown in our YouTube video on the fails&makes channel.