I'm really struggling with the software end of things. I've been able to reliably get data across the Bluetooth from the Arduino to the Android and I've been able to get the gauge program running locally, but when I try to bring the two code pieces together it has thus far failed. So I decided to take a bit of a break and focus on other pieces of the system.
The way I'm going to source the oil, trans snf intake temps is using a very slick DS18B20 temp module. I got this breadboarded with 4 sensors, so that part is ready to go. A common way to get oil and trans temps is to T into the line with the sensor. I have no interest in adding 6 additional points of potential leaks, so I'm going to use an external pickup. I'll clamp an aluminum block with the sensor epoxied inside to the line going to the respective cooler. Here's the trans temp pickup block ready to install the sensor. The oil temp pickup is identical, though with a larger hole.
