ESP32-C3 Plane Radar Display Gets OTA, Weather Updates
28 Jul 2026
A maker project is offering a small but instructive case study in rapid IoT prototyping: a plane radar desk display built on the ESP32-C3 microcontroller, paired with a 1.28-inch round screen, that now shows live aircraft origin, destination, and weather data.
What was built
The project centers on an ESP32-C3 chip driving a compact 1.28-inch round display. According to the report, the entire build takes approximately 15 minutes, and flashing the firmware via the ESPHome web flashing tool takes under 30 seconds — a notably low barrier for a functioning IoT hardware project.
The display caption describes it simply: a 1.28-inch round ESP32-C3 display showing live aircraft origin, destination, and weather data.
New firmware features
The creator customized the firmware well beyond a basic flight tracker. Key additions include:
- Richer flight data: instead of just showing tail numbers, the display now shows aircraft origin and destination.
- More descriptive aircraft types: for example, the display shows "B737-800" rather than the generic "B737."
- Local weather integration: temperature, humidity, time, and date have been added alongside flight data.
- Flexible configuration: the web interface now allows users to modify coordinates after initial setup without resetting the Wi-Fi configuration.
- Authenticated OTA updates: the firmware now supports over-the-air updates through the browser, with authentication built in.
On the display side, text size was increased by 10% by default, with an adjustable slider allowing users to scale text between 80% and 130%.
Risks worth noting
The report flags two technical risks tied to this kind of build. First, reliance on OTA updates could introduce security vulnerabilities if the authentication mechanism isn't robust. Second, dependence on external data feeds for aircraft and weather information creates a single point of failure — if those feeds go down or change, the device's core functionality is affected.
What's still unclear
Several details remain unaddressed in the available report. It's not specified what data source or API supplies the aircraft tracking and weather information, what the total component cost is, whether the project is open-source (and if so, where the code is hosted), what the radar's coverage range is, or what additional hardware beyond the ESP32-C3 and display is required.
Why founders should care
For founders building in devtools, IoT, or hardware-adjacent spaces, this project is likely more instructive than it first appears. The sub-30-second flashing time and 15-minute build suggest that low-cost, ESP32-based display products may be feasible to prototype quickly, which could lower the barrier to testing similar consumer or maker-focused hardware ideas.
The addition of weather, time, and detailed flight data on top of a core radar function suggests there may be underexplored demand for multi-purpose desk display devices — small hardware that aggregates several data streams into one glanceable screen.
Perhaps most notable for founders building connected hardware: the project's support for authenticated OTA updates points to a viable pattern for maintaining IoT devices in the field without requiring physical access after deployment. Combined with a web interface that allows reconfiguration without a full reset, this design approach may reduce user friction — a pattern worth watching for anyone building configurable hardware products at scale.
That said, the risks around OTA security and external data dependency are real considerations. Founders exploring similar builds should weigh how authentication is implemented and how reliant the product is on third-party data feeds before scaling beyond a hobbyist prototype.