The FlySky TX has some interesting features that allow it to display sensor readings from a RX. Having a ground based data logger made looking into this worthwhile. This post will cover the process used by the FlySky for sensor readings as well as interfacing micro controllers as a sensor source. There is a community of developers that have done a bulk of the work presented here and an effort will be made to give credit to them. The FlySky…
RSSI, which stands for received signal strength indication, was covered in the last post. The topic covered how the Nordic Seminconductor’s nRF240L0 wireless device could be used to measure RSSI values. Those values reveal the reliability of the radio controlled reception and interference that might be present. RSSI telemetry is basically a tool to see invisible radio waves that operate on the same operating frequency as the radio controller (TX) and receiver (RX). FlySky is a manufacturer based out of…
Before diving right in on this topic, we should ask what is RSSI and why does interference matter. First off, RSSI stands for Received Signal Strength Indicator and it’s a measurement of the radio frequency power level present at the receiver (1 and 2). A radio frequency transmitter typically has a fixed power output level. As a receiver moves away or around the transmitter, the received power level varies. RSSI is a way to measure that variation. Typically the variation…