I’d like to have the SSC32 operate the on/off buttons on the transmitter.
Below is a picture of the transmitter. It has three connections. When touching the middle connection (ground) to the top connection (high voltage) the car moves forward. When touching the middle connection to the bottom one the car moves backwards. The other three connections move the drive wheels from left to right.
I have a wire laying across one of the connections between high voltage and ground.
I’d like the ssc32 to make this connection for me by wiring the pulse of pin 16 to the high voltage on the transmitter and pin 16 ground to the middle connection for ground on the transmitter.
Will this work (spin the wheels on the car) or just produce a puff of smoke?
When I connect a multimeter to the ssc32 Pulse wire and ground and check the voltage this is what I get when sending ASCII commands from the computer.
You can probably make a simple switch connection using a resistor and an NPN transistor from radio shack. I’ve done something similar to operate buttons on a tv remote control.
This sounds like what I want. Not sure how to wire it. Would it be like this (see below)?
What I’m showing is to solder the collector lead of the transistor to the high voltage pin of the button, and the emitter lead to the ground pin of the button. B goes to the SSC32 pulse. Not sure what resistor to get. Would the resistor go on B?
Edit: This setup is wrong, see setup later on in this post.
Get the radio shack 15 pack of NPN transistors. Below is the setup I used for jumping across the IR remote button. You shouldn’t need the diode. The grounds on the two boards need to be connected.
Did my first test. Hooked up the NPN to the Voltage and ground on the transmitter. First test with nothing connected to base. Nothing happened (as expected). Then I hooked up 1.310 volts to base. It worked! Also had to scrample to unhook the power as the NPN got hotter than a firecracker! Next test will be with the SSC32. http://www.otherrobots.com/lynxmotion/rctransmitter1_3volts.jpg
When I send #12 P2500 it sounds like an old tractor. Turning the motor on and off in strong pulses. Is there a way to send a solid pulse or signal? Interesting now that I’m doing this instead of all on or all off I now have variable speed with the motor. Pretty cool.
Per the users manual, you would use the descrete pin output for full on/off like below:
#12H for full on #12L for full off
edit: with a diode and capacitor and some tinkering you may be able to tweek the servo pwm to a more useable varable speed control using the switch on/off.
Here is how I wired one switch to go forward. I’ll do the same for backward, and turn left and turn right for a total of four connections from the SSC32 12-15. This example shows the switch connection from High Voltage Forward and ground to go forward.
The advantage of this setup is you don’t have to take apart your R/C car or your friend’s car, boat, plane, etc. Just strap on your robotic intelligence transfer payload system (RITPS) with transmitter(s) for the correct frequency(s), attach it as a payload to the vehicle (be inventive, think multiple attachment systems).
The SSC32 should be hooked to bluetooth (or other wireless) to communicate to your PC. Heck you could even hook it up to Cricket!
For example you can control your (autonomous vehicle’s) camera turret, sensors, and servos all from the SSC32, including the vehicle itself!
Build one payload package that you can attach to a vehicle and transfer it from one vehicle to the next! Your own portable robotic smart kit (PRSK) to turn any R/C into a computer controlled robot!!!
Note: the reason this is working for you is the SSC-32 has 220 ohm resistors inline with it’s outputs. It’s a good design practice to include 1k resistors on the base of those transistors.
