I think i killed my servos

Community General Discussions
1

I was working on an object tracker with a sensor board on a servo.
The servo is controlled by a picaxe.
This is the program:

main:
servo 0,150
pause 20
goto main

(its actually more, but for testing i limited it to these rows)
Now when i attached the servo it somehow went crazy and keeps spinning around,...
So i thought, maybe its the servo.. lets try another one.
Bam.. same thing.. keeps spinning around.

I connected both servo's to another controller board (from my hexapod bot) and they do the same thing, keep spinning around.
So i think i somehow broken the servos but i dont know wth i did wrong.

Can anyone explain to me what happened?

2

servo vs servopos (but you probably fried them)

You probably fried the servo’s logic chip. Check your voltasge and your connections.

Besides that problem: you should read Picaxe Basic manual on the commands servopos vs servo.

3

Maybe you get some servos
Maybe you get some servos modified for continous rotation. This means, the servos aren’t killed, it’s a normal behaviour.

4

if they just spin around and
if they just spin around and around and around and around I think Freak is right

5

They didn’t do that when i

They didn’t do that when i bought them :slight_smile:
I already used them in my hexapod bot, but only after using them on my PICAXE this happened.
So i think the logic circuit is fried, like Rik said.

Only thing is, i don’t know why…
I use 4.5v on the picaxe and the servo is connected to the same power as the picaxe.
The servos should be able to run at 6V.

Should i have used a resistor between the PIC output and the servo signal wire?

6

Ok, it seems i should have

Ok, it seems i should have used a resistor between the PIC output and servo signal wire.
And also a seperate power source and only use ‘servo’ to initialize the servo and then use ‘servopos’ to change the position.

Probably typical beginner mistakes :smiley:
Cost me 2 servos but i will never forget it :wink: