im kind of new to this and was wondering if this is possible.
I am building a robot and intend to use a 2 channel radio to control forward and reverse of the left and right wheels. so each channel is to control one engine. I am not sure how to go about doing it tho. my plan is to take the 2 sets of 3 wires tha coem from the reciever which would normally go to a servo and run thm through a relay switch which would go from the battery bank to the engines. I have no idea if this will actually work though. has anyone done this or know how to do this with my 2 channel reciever? thanks!
The receiver is going to be putting out a PWM signal, which is not the same as a simple high/low signal. Might be possible to make a small circuit to convert pwm to high/low but…
Probably be easier, and more effective (as you’d have proportional control) to just use a dual motor speed controller built to do just that.
whats the third set of wires (flip channel in the diagram) for though…
my reciever only has channel 1 channel 2, and a slot which goes to the battery pack. does it replace the battery pack connector?
According to the user’s guide, linked from the product page:
The “flip” connector is used to reverse the operation of the two directional channels. In a situation such as a combat bot that is designed to be able to run when inverted, the action of the left and right control channels is reversed when it gets flipped upside-down. The ‘flip’ input on the controller, which can be actuated by a third R/C channel, or by an automatic switch that provides either a 5-volt or 0-volt signal depending on the state of the bot, handles the reversing chore, so that no matter whether the bot is right-side-up or upside-down, the controls operate in the same way.
For R/C operation, the input would be actuated by a third channel on the radio, so that flipping a switch on the transmitter would reverse the action of the drive channels.
For automatic operation, the signal would be provided by a switch onboard, such as a cherry switch with a weight on the actuating lever or somesuch, so that it would be turned on when the bot flips over.
If your bot is not designed to run while inverted, leave it in the ‘digital input’ configuration, and just don’t hook anything to the wire. It will always run in the normal operation mode.
