Click It!
Take a Presentation Machine slide show clicker from wired to wireless.
Control Rasp Pi slide shows wirelessly
Lead Image © Author, 123RF.com
Regular Raspberry Pi Geek readers might recall my "Presentation Machine" story back in 2014 [1]. There, I described how to set up a first generation Raspberry Pi (Rasp Pi) to show slides, with tips on how to use the device during a show. I've since used subsequent versions of the machine at OSCON, Fossetcon, and the Future of Education Technology Conference (FETC).
Today, I look at the evolution of my current Raspberry Pi presentation machine, the "wired" and brand-new ESP8266-based "wireless" clickers, and how it all comes together on stage. I discuss two different pieces of hardware linked together via WiFi, and in a flash of inspiration, I even add a Steampunk theme to the apparatus, resulting in very positive feedback from audiences.
Presentation Machine
The latest Steampunk Presentation Machine is a Rasp Pi 2 model B (RPi2B) [2] running the latest version of Raspbian Linux with a 32GB Samsung Evo+ microSD card, an Edimax USB WiFi dongle, a Logitech wireless keyboard/mousepad, and the original Logitech C270 webcam (Figure 1). The Rasp Pi is mounted on a frame made out of brass tubing, and an aluminum arm positions the camera. The camera was removed from its original housing and mounted in a custom brass and copper frame, giving it a retro-industrial look (Figure 2). The whole works are mounted on an old piece of laminate flooring.
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