Sound like what I will be doing this week. On Jun 3, 1:02 pm, budman <[email protected]> wrote: > 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.
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