i have 6 wires from the controller of a RF car

let's named them wire A B C D E F

wire A B C are for forward and reverse
wire D E F are for left and right

when wire A connected with C, the car move forward
when wire B connected with C, the car move reversed




yes, i want to drive the transistor into saturation when the pin is turn on

so can i use the circuit shown in the picture with some modification?

the chip i use is Atmel 89S8253 and the port is 2

here is the chip datasheet:
http://www.atmel.com/dyn/resou...oc3286.pdf

i will change the BC547 to 2N3904 transistor

case 1
the pin 1 of the transistor connected to wire A
the pin 3 of the transistor connected to wire C
the pin 2 of the transistor connected to port2 pin0

case 2
the pin 1 of the transistor connected to wire B
the pin 3 of the transistor connected to wire C
the pin 2 of the transistor connected to port2 pin1



Mathew