Connections

Ch12/PPM options

The signal CH12/PPM - If you use under 12ch you will always get PPM out of the ch12 connector. However if you need PPM out and use 12 channels then you simply configure it to be in PPM OUT (See special features configurations for guidelines how to do this).

RSSI

The little extra PAD over the CH12 connector is the RSSI output and you the bottom pin row for ground.

This is an analogue voltage that reveals how strong the signal is from the TX. Many OSD types can use this voltage to display a calibrated 0-100% readout on the screen display. The Min and Max voltages are a little bit different from RX to RX, so you must perform a new calibration if you swap a receiver in your system.

Servo connection

Look carefully at the connector pins and the PCB. The edge rows are all GROUND, the centre row are +5V and all top pins are the servo channels out.

Serial debug

The upgrade connector pin out
1 = GROUND     (2, 3, 6 are not connected)
4 = Radio data (do not connect anything to this pin in flight mode)
5 = Debug data output
The debug out is a 3.3V serial signal, can be used for OSD or onboard flight recorders,
The data format is very simple, 9600 Baud 8N1.
The data you get are:
G: number of Good data packages received
B: number of Bad data packages received
F: number of  Failsafe recalled

Values are counted from RX power up and will be zeroed again at next power up, so it is possible to land, connect to a PC via serial port converter and see the values for the flight before you power off the RX.
The serial debug can also be use full to test failsafe storing and recalling, it write in clear text what it is doing. And it is also active during power up and under special mode setting configurations.

 

PPM

The receiver can be configured to do a few things other than normal.
HOW to configure (if you don’t need to configure, just power it up as normal)
POWER OFF
connect a 2.54mm 2 pin jumper (a short circuit connection)
on servo channel 6-7 (YES between the two signals, they are now shorted together)
Power up the RX
See LED D1 is lit, this one is closest to same side as ch6
Now you stored a permanent setting: PPM out even if you use 12channels.
Power off, Remove jumper, Connect your servos, Test all works.

PWM

The receiver can be configured to do a few things other than normal.
HOW to configure (if you don’t need to configure, just power it up as normal)

POWER OFF

Connect a 2.54mm 2 pin jumper (a short circuit connection)
on servo channel 7-8 (YES between the two signals, they are now shorted together)
Power up the RX
See LED D2 is lit, this one is closest to same side as ch8
Now you stored a permanent setting: servo ch 12 out, if you use 12channels.
Power off, Remove jumper, Connect your servos, Test all works.

if you use under 12ch, you will off course always get PPM out of the ch12 connector,
after a setting change, or PPM timing change or number of channels assigned, you must always perform a bind, and store failsafe, and test all settings works.

Extra channels

Notice a channel 9 and 10 on the board if you wish to get more of you receiver. Connect your power and ground to one of the other channels pins and then solder the servo control to the 9 or 10 channel pad.