Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: converge on May 17, 2016, 09:28:08 PM

Title: how to turn servo controller right with 555 IC ?
Post by: converge on May 17, 2016, 09:28:08 PM

Hi,

I´m very new to eletronic and I´m trying to control a servo controller. I´m able to turn it left, but how to turn it right ?

This is the diagram i followed:

http://circuitdigest.com/sites/default/files/circuitdiagram/Servo-Motor-Tester-Circuit_0.gif

And this is how I think it should be on breadboard:

(http://i.imgur.com/TNST5oV.jpg?1)

Did I do something wrong ?

Title: Re: how to turn servo controller right with 555 IC ?
Post by: bdeuell on May 18, 2016, 04:08:39 PM

what is the value of the capacitor you used? the capacitor in the breadboard picture looks like an electrolytic cap which typically have higher values than the 100nF specified in the schematic.

i didn't check the values specified in the schematic but assuming they are appropriate for the signal the hobby servo needs i think the circuit should work.

other suggestions
- double check all your wiring
- replace the 555 timer IC (ensure it is installed in the correct orientation)
- check the voltages at different points in your circuit and make sure they are what you expect
- (if you have access to an oscilloscope) check the output signal and capacitor voltage