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--- blog:wiimote_whiteboard_pt1 [2022/07/08 09:24] – old revision restored (2016/02/16 10:15) 192.99.0.24
+++ blog:wiimote_whiteboard_pt1 [2022/07/08 09:24] – old revision restored (2016/02/16 10:16) 192.99.0.24
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 One of my past students, Henry, noted that I needed more colours to draw things on the whiteboard. That got me thinking if something like a Raspberry Pi could be used as a cheap smart whiteboard, along with a projector. It turns out that Johnny Lee has already done this using a [[https://www.youtube.com/watch?v=5s5EvhHy7eQ|Wiimote and an infrared pen]].
-So I've bought a Wiimote and built two IR pens using [[http://www.jaycar.com.au/Active-Components/Optoelectronics/Optocouplers/5mm-Infrared-Transmitting-LED/p/ZD1945|IR leds]] I've bought from Jaycar: one is a 1.5V rechargable AAA wired directly to the LED and switch, the other has a 39ohm dropping resistor and two AA batteries.
+So I've bought a Wiimote and built two IR pens using [[http://www.jaycar.com.au/Active-Components/Optoelectronics/Optocouplers/5mm-Infrared-Transmitting-LED/p/ZD1945|IR leds]] I've bought from Jaycar: one is a 1.5V rechargable AAA battery wired directly to the LED and switch, the other has a 39ohm dropping resistor and two AA batteries.
 I've got the software installed on my laptop: [[https://github.com/pnegre/python-whiteboard|python whiteboard]] and [[http://open-sankore.org/|Open Sankoré]], along with a Bluetooth dongle. I've just tried it all out at work in a spare classroom.