We’ve got an arduino kit workshop and wish to know how to connect it to an external electronic device with a bluetooth system.
Is it necessary to buy Arduino BT? Maybe it’s possible to assemble the basic kit with an another BT device, isn’it?
This is what we have to do: when someone pushes a botton on the external device, a signal should be sent via bluetooth to the main object containing arduino. Then this main object should send a feedback (a led is turned on).
Moreover, how can we match arduino with a timer, an electronic clock or something like that which hallows to recognize the day or the hour when the signal is received by the main object? We’ll have three LED so the signal should be shunted, in order to make a different led turn on in a corresponding time period (for ex. 60 seconds).