timing circut

[zdoll11]

does anyone have a schematic for a simple timer that runs a motor for a certain time then reverses the motor for the same time and just keeps looping?

[Soeren]

Hi,

does anyone have a schematic for a simple timer that runs a motor for a certain time then reverses the motor for the same time and just keeps looping?

What you need is an astable multivibrator, but you need to tell us more about the motors, like voltage and current and how long each period should be (µs, centuries or whatever).

[knossos]

This would probably be more fitting for the electronics category instead of software.  Also its best not to start multiple identical threads since you posted this one yesterday.  Soeren's suggestion of an astable multivibrator sounds like what you would need, but as he points out, we would need more information.  The page I linked on the other thread to 555 timer circuits also includes schematics for an astable multivibrator.

[Soeren]

Hi,

The page I linked on the other thread to 555 timer circuits also includes schematics for an astable multivibrator.

I was thinking more of a two transistor astable, as that would negate any need for an H-bridge 

[knossos]

I was thinking more of a two transistor astable, as that would negate any need for an H-bridge 

Yeah that makes more sense.   I've had lots of experience repairing electronics (mostly for communications), but I'm new to engineering so I'll likely way over-engineer some aspects and under-engineer others.