[Systems Engineering Teachers' Mailing List] RE: PICAXE Help

[Roger Knight]

Thanks for this Peter. 
I have tried this. Trouble is the coil on the relay I have requires greater than the current available from the picaxe output pin. Can you recommend a relay that will do the job?
 
Cheers ... Roger

________________________________

From: syseng-bounces at edulists.com.au on behalf of Peter A Ward
Sent: Fri 27/06/2008 11:58 PM
To: Systems and Engineering Teachers' Mailing List
Subject: [Systems Engineering Teachers' Mailing List] PICAXE Help


Dear Roger, 
Try using a relay. The Picaxe may not be able to supply the windscreen wiper motor with enough current or its getting interference back from the motor.  
Here is some examples of relays used to run 12 volt car motors from an 08M picaxe from a couple of years ago.

 <http://mail.stpats.vic.edu.au/RKnight/Drafts/IMG_0869.jpg> 

 <http://mail.stpats.vic.edu.au/RKnight/Drafts/IMG_0870.jpg> 

relay with picaxe 08M 

 <http://mail.stpats.vic.edu.au/RKnight/Drafts/IMG_0873.jpg> 

This was an egg incubator  eventually controlled by a picaxe via relay.

Hope this helps

Peter A Ward
Systems Teacher
Euroa Secondary College
ward.peter.a at edumail.vic.gov.au

On 27/06/2008, at 6:45 PM, Roger Knight wrote:


	
	Greetings all. Is there anybody out there who can explain how to run a common 12 volt windscreen wiper motor with a PICAXE?
	I've been using PICAXE for 3 years now and I'm sick of the "dinkyness" of it all. Lets make this baby do something REAL for a change, is where I'm at right now. There has to be some way we can integrate it into the real world. Any help would be appreciated.
	
	 
	Cheers ... Roger 

________________________________

	 


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