Pages: [1]   Go Down
Author Topic: Servo only responding to odd values  (Read 500 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Newbie
*
Karma: 0
Posts: 20
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hi, I got two servos a little while back and decided to have a play with them today, and I've had no end of troubles. I've been using the "Knob" example sketch, and it broke one of my servos. It seems like my servos only rotate 90 degrees, which is fine but the odd thing is that they only react to values 30 to around 230, if I go below 25 it strains the servo (this is what broke my first, it started out at 0, I got a horrible whir and the shaft was broken). Is this normal? Seems odd to me.

Here's the model of the servo that I got:
http://proto-pic.co.uk/servo-small/
Logged

Offline Offline
Edison Member
*
Karma: 64
Posts: 2465
Now, More Than Ever
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

As noted by your supplier, these are sourced from Sparkfun.
Not a lot of positive posts
http://www.sparkfun.com/products/9065

One guy provided this...
Here is what I found out with this servo.
Wiring -
Red: 5V
Brown: ground
Yellow: signal

Timing: Stable values
Right at 0.50mS (about 85 degrees)
Left at 2.0mS (about -85 degrees)
Center at 1.25ms (about 0 degrees)

While someone else...
Here is what I got with Center 1.58ms Left max 780us Right max 2.38ms
Logged

"Hello, I must be going..."
"You gotta fight -- for your right -- to party!"
Don't react - Read.
"Who is like unto the beast? who is able to make war with him?"

Offline Offline
Newbie
*
Karma: 0
Posts: 20
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Confirmed for cheap crap then, ahh well it was a gamble with them anyway - saw them and grabbed them without really doing any reading - lesson learned. By any chance do you know of any decent small servos that have 180 degree rotation? Preferably cheap-ish? I plan to build a hexapod so I'll need a lot.

Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 20
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Never mind, I've done some research and found exactly what I was looking for. Google and lots of reading to the rescue.
Logged

Pages: [1]   Go Up
Jump to: