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which arduino board to buy

e14 Contributor over 12 years ago

need to build a timer control board for a coffee machine

it needs to be able to activate 3 240v solenoid valves with 4 programmable time periods before shut off

and also turn on a 240volt motorpump

Any suggestions would be helpful

Thanks

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mcb1 over 12 years ago in reply to e14 Contributor +1

You might wanna check if the Arduino you pre-choose can do that stuff Can you enlighten me as to what the above means?. The Arduino is more than capable of providing 4 independant timed outputs to a suitable…

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0 mcb1 over 12 years ago

Any of the Arduino will be suitable.
Size may be your limiting factor, and somewhere to put the 4 relays needed to do the 230v switching.

I suggest looking at the Arduino IDE example titled 'BlinkwithoutDelay' which uses the 'millis()' time to do the timing rather than 'delay'.

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0 e14 Contributor over 12 years ago in reply to mcb1

Ok thanks

So a mega or an uno will suffice then
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0 mcb1 over 12 years ago in reply to e14 Contributor

Even a nano or some of the other 'chip only' type boards will work.

You could also use a Digispark

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0 mcb1 over 12 years ago in reply to e14 Contributor

Even a nano or some of the other 'chip only' type boards will work.

You could also use a Digispark

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