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Be sure to use the Arduino Stack Exchange for questions that are more Arduino and less electronics.

3 votes
2 answers
418 views

How can I use 5V devices and sensors with a Fio?

I have a PS/2 barcode scanner that works fine with my Uno and the PS2Keyboard library. I'd like to hook it up to my Fio so that I can transmit barcode readings wirelessly, but the operating voltage of …
JohnB's user avatar
  • 349
4 votes
1 answer
1k views

Can I use a USB keyboard with the PS2Keyboard library?

keyboards and mice usually have only USB plugs and require an active adapter to connect to a PS/2 port.[1] If it has the capability, would a USB keyboard select the appropriate protocol when wired to an Arduino … If the USB keyboard does not have the protocol selection capability, would an active adapter work with an Arduino? …
JohnB's user avatar
  • 349
8 votes
1 answer
1k views

Can I connect two different 1-Wire Devices to the same data pin on an Arduino?

I have used DS18B20 temperature sensors many times and understand that they can be daisy chained on the same data pin. Could two different sensors be connected in the same manner? For instance, could …
JohnB's user avatar
  • 349
9 votes
2 answers
3k views

How can I mount a shield on a breadboard?

The non-standard spacing of the headers on Arduino boards makes it so the shields will not fit on a breadboard From what I have read, there is no good reason for the non-standard pin spacing on Arduino
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  • 349