![]() My local hacker space i3Detroit has a really nice 150 watt cutter that can make mince meat of 4.5mm acrylic. Since the cuteness of the lunchbox was long over it was time for some laser cut acrylic. By definition, an open frame anything needs a frame to mount in. Step 2: Gen 2 – HDMI Monitor + Laser Cut Plexiglass Arcade Caseīack on eBay I found a nice looking $54 dollar HDMI open frame monitor with a resolution of 800×600. Plus, while the lunchbox at first seemed cute later it seemed kinda cheesy. The small font on the display was more fuzzy than I would like. While it all kinda worked I was not really satisfied with the quality of the video on the composite display. As a final hack, I soldered a pair of wires directly between the car charger and the Raspberry Pi – not my best idea. The 12Vdc also goes to the USB car charger which steps the voltage down to a regulated 5Vdc. Therefore, the lunchbox has an external 12Vdc wall wart power supply. For around $6 bucks I found a 5Vdc by 2 Amp car changer. To resolve this, I bought a cheap USB car charger from Amazon. ![]() The Raspberry Pi, of course, needs 5Vdc as the supply voltage. The display has a reported resolution of 656 by 416 pixels which defiantly makes displaying a lot of useful information a challenge! The display requires 12Vdc as the supply voltage. ![]() I picked up the one in the picture on Ebay for $22 bucks – simply search on “4.3 Inch TFT LCD Car Rear View Monitor Car Monitor”. My first thought was to use a little composite video display.
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