An Arduino Pro mini handles the selection between outputs by driving a selection of relays with appropriate timing. An interesting detail here is what [Lajt] calls a ‘sacrificial relay’ in the ...
An Arduino Pro Mini is more than up to the task, and a custom PCB makes for a fairly neat installation. This isn’t the first time we’ve seen somebody replace the controller on one of these ...
It lets you use not just one or three Arduino boards but seven — Micro, Pro Mini 3.3V, Pro Mini 5V, Leonardo, Uno R3, Nano R3 ...
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