Dual thermometer with display and plot

[jgrina]

Current interface panel

mlpcapture.JPG (118.49 KiB) Viewed 101450 times

I've expanded the pin 13 program to measure two temperatures with DS18B20 sensors and plot the results over time.

Jim

[jgrina]

TEMPin13.jpg (178.63 KiB) Viewed 101445 times

I had a problem with my old XP laptop and this is a migration to a very nice Hannspree (10") with an HP 22" external monitor. The new laptop is Windows 7 and a bit of a learning curve. However, the Arduino/Megunolink apps migrated very easily. The dual temp is currently tracking room temperature and dew point temperature. I'm going to shift the dew point to a probe in the vent for the ac/heat system. The old AC unit died, so I'm tracking the new unit. The new unit is so quiet that I can't tell when it kicks in. By putting a probe in the vent, I will get a sharp drop in temp when the AC kicks in. By plotting that against room temp I will get some idea of how well the new AC works. There are several interesting events to monitor, and with the Arduino. extended with additional processors and sensors, I can use the MegunoLink Pro to create appropriate displays.

[philr]

Nice work Jim! Looks like MegunoLink is providing a flexible tool for your AC system investigation.