A while ago, when Raspberry Pi systems were hard to find, I bought a cheap ARM based system called an Inovato Quadra to see what it could do. It doesn’t have the GPIO options of the R-Pi, but it has USB, HDMI and Wi-Fi built in. With the optional USB dongle shown it gains faster Wi-Fi and Bluetooth as well.

Ironically, these are now sold out (they are selling them as part of a HamClock bundle rather than standalone). For those who already have one (or, should they become available again), there were a number of cooling designs online that placed large fans under the case, but they made the footprint much larger and much of the air flow from the fans was going to blow up the outsides of the case. So, I went hunting on Amazon for some better cooling options…