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General project discussion / help
Did you make a robotic coffee pot which implements HTCPCP and decafs unauthorized users? Show it off here!
By buschmann
#194712
Hi guys. I have tried to read up on what i need to build this thing but now im stuck. I want to built a simple remote presenter, like this one: https://www.amazon.com/Logitech-Wireles ... B002GHBUTK.

My idea is that it remote is a handheld device with a single momentary button that have several functions depending on how it is pressed (single click, double click, hold, etc), battery powered, no dongles because any modern machine have bluetooth connectivity. This is what i think i need:

[*]Bluetooth thingy: https://www.sparkfun.com/products/12582
[*]A small arduino board: https://www.arduino.cc/en/Main/ArduinoBoardMicro
[*]a button: https://www.sparkfun.com/products/9190
[*]some way to power this thing with a battery.
[*]a handheld, snug, chassis that fits the entire rig

There are several things i do not understand about this yet but here is what i imagine it will work: I press a button, the arduino makes magic, sends the correct signale to the bluetooth transceiver which in turn sends the correct keyboard command to my mac which makes keynote/powerpoint happy.

Am I on the right track or do i need to rethink this?
By buschmann
#194722
I may have found a new direction. It would seem i need but a RN42, which have support for HID, and a Arduino Pro Mini and i'm good to go.

Now im wondering about power. How much power does this rig require? Since this is supposed to be a handheld device it is worth consideration.

Also, i would like it to be simple to connect. When i power it up, via a switch of some kind, it should automatically reconnect to my computer. From the datasheets i cannot find if this is the default behaviour or not?