I'm hacking apart a 20$ "New Bright" remote control car.
The controls are digital, either forward or backward, full left or full right,
so it will be very easy to use, only needing 4 pins on my chip.
I'm using a Basic-X chip that I salvaged off a robot I built for a class.
I have a few questions though.
I decided to use Tip120 transistors to control the motors.
I am kinda confused though,
so I wire the base to one of outputs on the chip (is 10ma enough to trigger a Tip120?)
And, the emitter and collector are wired just like a relay, with one going to the the motor, the other going to ground or positive voltage?
I tried wiring it like this, and the transisitor got VERY hot.
Also, what is normally used if I don't make my own custom circuit board?
I bought a board from ratshack that had just a bunch of little copper pads on it, but that turned into an absolute mess.
Just to let you know a little about what my goals are,
I'd like to use a IR reciever on the robot, and a homemade remote,
to be able to change subprograms on the robot, without having to press any buttons on the robot.
I am also using IR senders and recievers in the bumpers to detect obstacles. I will also be using a IR transciever setup higher up in the bumper to detect to see if the robot could try to climb over the obstacle (its a pretty beefy truck.)
Thank you for any help
The controls are digital, either forward or backward, full left or full right,
so it will be very easy to use, only needing 4 pins on my chip.
I'm using a Basic-X chip that I salvaged off a robot I built for a class.
I have a few questions though.
I decided to use Tip120 transistors to control the motors.
I am kinda confused though,
so I wire the base to one of outputs on the chip (is 10ma enough to trigger a Tip120?)
And, the emitter and collector are wired just like a relay, with one going to the the motor, the other going to ground or positive voltage?
I tried wiring it like this, and the transisitor got VERY hot.
Also, what is normally used if I don't make my own custom circuit board?
I bought a board from ratshack that had just a bunch of little copper pads on it, but that turned into an absolute mess.
Just to let you know a little about what my goals are,
I'd like to use a IR reciever on the robot, and a homemade remote,
to be able to change subprograms on the robot, without having to press any buttons on the robot.
I am also using IR senders and recievers in the bumpers to detect obstacles. I will also be using a IR transciever setup higher up in the bumper to detect to see if the robot could try to climb over the obstacle (its a pretty beefy truck.)
Thank you for any help