Re:Large steering Servo Here’s what I did on my staghound project. See AC006
Here’s what you need Capacitors .1uf $1.99 at Radio Shack Windshield wiper motor ebay $12.95 +shipping/handling of $17.96 (buy several and save some money on shipping) High Power H-Bridge DC Motor Driver Board Tecel d200 $35.00 + $4.00 shipping No longer available from tecel but available from others. (the two wires from your modified servo go to the “IN1 and IN2” lines, +5 volts from the LM7805 go to the EN and 5V lines. Battery plus/ minus and Motor lines as marked) 5 Volt voltage Regulator LM7805 appox: $6.00 This is a 5 volt voltage regulator; use it to power the d200 as well as your RC receiver Futaba S3003 Servo $10.99 From Tower Hobbies or Ebay (or get one out of that box of RC stuff left over from the last airplane you crashed, that’s where I got mine. Then: respectfully copy what this “smarter than the average bear” did. http://www.fieroaddiction.com/servo.html Basically the receiver send the signal to the servo, the servo decodes it and passes along the pwm signal that normally goes to the servo motor to an amplifier that provides the power to drive a bigger motor, and then by a linkage back to the servo position feedback keeps the motor where you want it. The set up works just like a servo, move the stick a little the motor turns a little and stays there, deflect it more, the motor turns farther and stays there. Release the stick and the motor return to its original position. So for your $89.00 bucks you get a Really powerful servo. (less than $89.00 if you already have an s3003 servo and a small dc motor. Also this set up without the connection back to the servo provides proportional directional control useful for perhaps a turret spin control. Ie: Deflect the stick slightly to the right, the turret will turn slowly right. Deflect the stick fully right and the turret will spin faster right. Release the stick and the motor/turret stops (same for left spin). I want to echo the fact these large motors are quite powerful and possibly dangerous so unless you are an American Counter Terrorist Agent and need to get some information from some evil Russian ambassador, KEEP YOUR FINGERS OUT OF ROTATIONAL PATH! Steve “Superman wears Jack Bauer pajamas” B. -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] Visit the group at http://groups.google.com/group/rctankcombat
