T-Echo with buzzer and led ring ready

[Marco Zonca]

Just tested on the air today it looks good! After a few weeks, working around my T-Echo and electronics/programming, finally is done.

A brief description:

Project "ard-blueTEcho" by Marco Zonca 04/2025, it makes bluetooth connection with LilyGo T-Echo + SoftRF + Moshe Braner version MB158; the sketch, with the LED Indicator Circuit, connects T-Echo for receiving NMEA collision warnings sentences via bluetooth-LE, evaluates the warning/s level and produces "bip" sounds with a buzzer (3 levels); additionally it shows on 1 of 8 LEDs the relative direction and on 1 of 5 LEDs the relative altitude of the potential collisioning aircraft; there is also a status LED to show NMEA activity;

Hardware/Circuit:

Arduino Nano ESP32 MCU with onboard bluetooth-LE module, active buzzer, JST-HX connectors, SOIC-24 version of the 74HC4067 3.3V 16 channel multiplexer, 8+5+1 = 14 x 3mm LEDs, self resettable fuse, 2 x mini switch to on/off, a few other SMD components 1206 size; a new battery of 2100mA/h replaces the original one; the shell can be made with a 3D printer;

The MCU has been programmed by the way of free on-line Arduino Cloud.

The whole project and the description how to make it will be published on Hackster.io website soon.

Thank you Moshe! :-)

[Moshe Braner]

Very nice Marco!  How does it compare with the radar view on the T-Echo itself?

[Marco Zonca]

Moshe, I have to spend some more time on the air to make comparison: my eyes was all on the led ring and watching around not to do collision with other paragliders (I am a paraglider too).

One more picture here below showing the internal of the blueT-Echo in a 3D view.

[Marco Zonca]

The project is available here: https://www.hackster.io/marcozonca/flight-alarm-led-ring-83904a

[Marco Zonca]

I just finished the stand-alone version of the LED Ring flight alarm via bluetooth. It should work with all hardwares and not only with T-Echo.

This version includes a display showing distance and type of aircraft causing potential collisioning alarm.
After some tests I have to conclude, I will publish the project.

[Marco Zonca]

The project has been published here:

https://www.hackster.io/marcozonca/flight-alarm-led-ring-stand-alone-ver-arduino-nano-esp32-49eda9

[Marco Zonca]

Here it is a picture, taken during a paragliding tandem flight, with both versions of the led ring flight alarm:

P.S. answering to M.Braner "Very nice Marco! How does it compare with the radar view on the T-Echo itself? On Saturday, May 10"

I can say YES, the radar view on T-Echo is good.