Several years ago, I designed a thermometer with Nixie display using remote sensors. The thermometer displays the indoor and outdoor temperatures as well as the time, captured from an external GPS module. A specific application checks a remote mailbox on a regular basis (counting the passes of the mailman). All the sensors send their data (wirelessly) for display every 30 minutes. For various reasons, I could not connect the PC to the display box to capture the arrival of the data frames and debug them For this reason I made use of an RFM12 radio module to spy on my thermometer. Now that the software is up and running, I’ll share my experiences with you.strikethrough = overscore