Update: It’s possible to build this project with the cheaper and more readily available HC-06 3.3V Bluetooth Serial Slave module, which is a drop-in replacement for the Virtuabotix BT2S module used below.  The HC-06 is available from a variety of sources, including Amazon and eBay. However, a few component substitutions are required: U1, the 78L05… Continue reading

Palm OS? Really? Okay, I realize that devices like Palm handheld computers have long been supplanted by Android and iOS smartphones, but that wasn’t yet the case in in 2001 when I originally wrote this ham radio contest logger for the Palm. They were still pretty cool devices back then. Heck, I was using a… Continue reading