Dynam micro-servo on a 16F88 pic

A nice little servo my friend Zukoso got me at dealextreme.com. The torque is quite limited, but it's enough for small projects (I'm planning to make a robot with some of these). I'm just beginning to learn about PICs, and today I finally got to program a pic and move a servo :D

Category:

Science & Technology

Tags:

• servo
• micro
• pic
• 16f88
• microchip
• microcontroller
• dealextreme
• deal
• extreme
• review
• dynam
• jdm
• programmer
• torque

[Pristopher]

what's the necessary current and voltage to make it run?

I tried to use an arduino, but it wouldn't go...

[Walkifer]

The signal pin is directly connected to the pic output, and the power pin is directly connected to an old Atari 5V, 1.5A power supply. I'm not sure about the current requirement of this servo, but I think it must be very, very little (its dc motor is very small). Maybe it's a problem with your code, or just a wiring problem. Maybe your servo has a problem; I have three, and one came with a loose wire or something like that (I move the cable a little and it works) but seems fixable anyway.

[Gearz86]

I got a question....is it possible to make the servo do full 360 rotation? I know its not configured for continuous rotation, but I'd like to use it for a project where I need it to open vertical blinds. Which requires multiple rotations. I'd be using a PIC controller as well.

[Walkifer]

I think it might be possible; I'll try it as soon as I get a spare PIC, I'll let you know how it went. For blinds I would use stepper motors, since this microservo have very low torque, and steppers are easily obtainable in old printers (the problem is you'd have to make a driver board for it).

[edtronic]

what compiler did u use

[Walkifer]

PIC Simulator IDE

[Gearz86]

Haha, didn't really check back on this, but that's exactly what I went with. (the stepper motor). I even opened a printer, but unfortunately it had DC motors. The driver board wasn't too bad, just went with the hex buffer to TIP120 transistors. I think that's the standard config. I got an A on this project :)

[Pristopher]

1.5A is allot for a little servo. I guess that's the problem then... THX

[Robobbly]

Cool!