Thanks for the link, i didn't find that in my previous search about vending machines, there should be a way to "tag" relevant threads here on the forum with useful keywords, this one should definitely be tagged with "vending machines" .As others have mentioned, this is best done with a microcontroller (uC). That said, a uC can be a bit daunting if you've never programmed one before, but some are easier than others for beginners. Personally, I like the PICAXE as it uses a form of BASIC language which is one of the easiest languages to learn in my opinion.
I'm slowly working on vending machine for a friend using a PICAXE capable of driving six servo motors (six coils for six different candy bars). I still have a ways to go, but the bulk of the design is based around project I helped another AAC member with found here. Take a look at the schematics and code at the end of the thread and see what you think. If that doesn't scare you away, I can give you guidance on a simple design.
What is this for by the way? School project, pet project, gift for a friend, workplace, etc.?
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by Wes Brodsky
by Luke James