Designed is a big word. Once I bought a Conrad system based on a central logger that can handle 1 timer input, 8 analog inputs and 8 digital (on/off) inputs. The old sensors dat came with it were large and the 433MHz transmission was bad. The software was modular so you could choose a meter type and behind it you could connect it to an input and add a formula to show the right values. Due the bad transmission I quit the project. Many years later I came to Radiomatix who makes professional TX/RX modules. I bought a set and after a simple test I was satisfied and starting to find out what to sense and with modern technology the sensors could be very small. Several temperature sensors of the air, engine and fuel, 3-axis G-force sensor, humidity, RPM and speed.

It does 2 readings of all inputs per second. It has a live transmission to a laptop and because the data is simple RS232 you can even send the data onto the internet. The software can also record the data and play later.

New project comes alive. - R/C Tech Forums