The BLE Re-Transmitter resends 330 MHz messages to a device

 This is a second implementation of this project. It uses only the case of the original. The first sent Bluetooth messages using an adapter which accepted RS-232 signals and Modem-style “AT” commands for setup, pairing, and control. It was unsatisfactory because of a range of only about 4 feet and the applications to show the messages were very limited to a line.

This new implementation used Bluetooth Low Energy (BLE) messages provided by an NINA B306 module, based on Nordic nRF52480 and containing an Arm® Cortex®-M4F and a 9-axis IMU.

It has a range of about 10 feet and its messages can be displayed on the BLE Terminal app on my cellphone, iPad or MacMini. 

It can display 19 data items in a properly formatted and labelled manner. These are provided by  6 messages which are continuously broadcast periodically from 4 devices at varying periods.

The Arduino program uses the ArduinoBLE library for interfacing.