This will work with any auxiliary channel but I suggest you use AUX4. In the DeviceSEL, set the OUT of AUX4 to INH. Then in a program (#3 -#5), mix BUTN -> AUX4. Leave the Offset set to zero, the select switches on the bottom to POS0, and the THRO STK as INH. Set both the upper and lower Pos0 rates to +100%.
The output of AUX4 will now toggle between -100% and +100%. The range can be changed either by using different POS0 rates or by changing AUX4's limits in the TRVL ADJ menu.
If you want the button switch to be momentary, like a snap roll switch that is on only while you hold it down, this requires different programming. In the DevicSEL, set AUX4 device to BUTN and its OUT to ACT. You can now use the receiver's AUX4 output for the electronic switch.
The 9303 doesn't have a motor cutoff in the ACRO cinfiguration. If AUX4 is now mixed into the throttle, it will give drive the throttle to idle or below as long as you hold the button. You have to be careful in setting up the throttle servo when using this. This works great for IC engines but don't use it on electric motors.
Allan
Last edited by AWorrest; 04-28-2014 at 10:24 AM.