Radio Master TX16S Setup
Last updated
Was this helpful?
Last updated
Was this helpful?
In v2.0x, HeadTracker supports SBUS output by default on pin P1.03. It is activated always, thus there is no GUI checkbox to activate it. In case you need an inverted SBUS signal, attach to pin P1.10 instead
You can connect your HeadTracker based on Arduino Nano 33 BLE / BLE Sense to TX16S AUX1 or AUX2 port as follows:
GND to GND
VIN to 5V pin, and
TX of Nano P1.03 (=non-inverted SBUS output) to RX of TX16S
TX16S AUX TX remains unconnected. The Arduino Nano 33 BLE / BLE Sense gets powered via RadioMaster TX16S AUX port, no extra power is required.
In the GUI the inverted option needs to be selected. SBUS uses a idle signal level which is low. Radio Master expects a standard UART signal, which is idle high.
If you are running a direct wired connection to the AUX port you can increase the Update Rate to the full 150Hz. If you are using this in wireless mode (Option 3) Choose 80Hz, which will match the Bluetooth update rate.
set SYSTEM -> HARDWARE -> Serial port to SBUS Trainer (left image shows EdgeTX, right image OpenTX):
Please note that OpenTX (up to v2.3.12) erroneously lists TTL for serial ports - TX16S uses 3.3V logic levels!
In MODEL -> MODEL SETUP -> Trainer, set Mode to Master/Serial
For testing purposes, the next example enables all 16 SBUS channels from HeadTracker. Lets create for this under MODEL -> SPECIAL FUNCTIONS a special function Trainer with value Chans and lets enable it (tick the checkbox). The following example uses switch C position up for overriding all 16 SBUS channels with data from HeadTracker:
In a permanent setup, you most likely only want to override a few specific channels from HeadTracker - for this, skip the special function and choose TR(x) in mixes page on the specific channels you want to include, instead.
To verify that all works as expected, select from main menu (long roller press) Channel Monitor (EdgeTX) or Monitors (OpenTX):
Check the channel values in the channel monitor. Flipping switch C up, should show the HeadTracker channels in the upper bars of each channel (the examples here show a signal for only the first 3 channels):
