southpaw wrote:can any of you kind souls advise me if i need a gertboard please,
what i would ideally like is a piece of hardware that i can attach to a pi, feed in maybe 6v or 12v and have control of the 6/12v output via software (if the hardware came with a software programme then all the better)
kids have a halloween project, a skull that spurts blood, my electrical skills are limited to occasional 12v automobile stuff so figured i would use a window washer motor but unsure how to interface this to the pi
any advice very welcome
The Gertboard will work for you here - using one of the darlington driver outputs. you can feed 12v into the input pin from a car battery and the outputs will switch this to 0v.
It may be a bit overkill for just one little motor, and something like a PiFace is more compact and has mechanical relays which you may be more comfortable with, but the Gertboard is more flexible for many other projects IMO. (and both are the same price too, so get the Gertboard
Ah - quick edit - Just seen Gerts reply - Doh to me for forgetting the motor controller!!!