The Bluetooth Devices Visualizer is a #wearable device that uses an #ESP32 microcontroller to scan for Bluetooth devices and displays the number of devices found using LEDs. It also has a small OLED display for relevant details and offers different operational modes to explore the number of #Bluetooth devices in the area.
https://hackaday.com/2023/10/21/bluetooth-device-visualizer-reveals-devices-in-vicinity/