Hi, this is the first time i write on this forum and i am a newbie, with Arduino and electronic
My first project is get a R/C Car Nikko Evolution Citroen Xsara 1/14, remove all the original electronic and use a arduino for control the DC Motor and the direction servo.
I get the DC motor working with arduino + L293E, but with the servo i dont know how connect it.
The servo have 6 wires:
2 wire for power up
1 chasis gnd
3 potentiometer
Any have idea how connect it to Arduino?
Thanks
I never heard of 6 wire servos, i thought that servos had 3 wires.
Can you see from the original circuit how it was hoohed up maybee ?
The original board is a mess, its imposible follow the tracks
I read in some RC Forums that this 'servo' not is a real servo is just a DC motor bidirectional with a pot. This pot give info about the position of the motor.
I tried read the pot with arduino but i dont know the position of the wires.
Thx and Best regards
Take the three wires from the pot and wire them like this:
1: Vcc from Arduino. This is the 5V power that runs the Atmega chip. Do not exceed 5 volts or you will blow the Arduino chip.
2: Wiper or center pin. This is the pin on the pot that varies as the pot is adjusted. Connect it to an A/D port on the arduino.
3: GND. Connect this leg to the same ground as the arduino.
As the pot is turned the voltage on the wiper pin will change. Use the readings from the A/D pn on the arduino to figure out the potentiometers position.
It may not be worth messing around with, unless you want the challenge of writing your own servo control code. The Arduino servo library won't work for non standard servos where the servo pot has to be connected directly to the Arduino.
Servos pretty cheap these days. You can get two from here for $10 including shipping. http://www.dealextreme.com/details.dx/sku.6134
Those are on backorder but the standard Hitech HS-311 is only $8.99 from http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXDEL5&P=7 — they are a little noisy but cheap and reliable.