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rc:dev:faze_tx_ppm

FazeTX2PPM

 Overview

Most standard RC transmitters are bulky, and fragile. It's always a big deal to carry them around, especially when you have small quads.

Some time ago, I bought a micro quad: the Faze from HorizonHobby. It's basically a clone of the LadyBird or the CX-10. I had a great fun flying it around, but it ended up… faulty (battery can't hold harge, some dead LEDs, and finally a dead motor).

The transmitter is reaaally small ! So I thought I'd try to use it to fly my other quads. Indead of just replacing the PCB, I decided to keep it so I don't have to deal with the trim buttons, pots reading and conversion, … The communication protocol is not standard so I opened the transmitter and got to work.

Protocols

Input Protocol

One of the advantages of this transmitter is that the RF module (a NRF24L01 or a clone, doesn't matter) is on a separate daughter board, instead of being embedded on the PCB. It makes the reserve easier (the pinout is also written on the bard) I just wired a LogicAnalyzer on the pins and sniffed the protocol.

Output protocol: PPM

I wanted to get a standard output, so I could connect a JR or a TauLink module. PPM is the easiest solution.

Code

Current plan is to embed a small Attiny85 inside the remote, and have a small 4pins headers sticking out of the transmitter. Stay tuned.

Resources

Permalink rc/dev/faze_tx_ppm.txt · Last modified: 2015/08/25 22:44 by Hyde179

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