User:1sfoerster/SDR

Problem Statement
Get tire pressure sensor transmitters and receiver working so can begin trying to decode wireless information between the two.

Powering on Receiver
Had to design a mechanism to connect to 12 volt supply in classroom.

Turning on the Transmitters
The goal was to find a tire or mechanism to put a transmitter in that was similar to a tire.

Making Tire out of a Plastic Bottle
The goal was to vary the pressure reading on the receiver and turn the transmitter on more reliably. This attempt did turn on the receiver video and the receiver did change values. But it leaked and eventually cracked while trying to pump more air into it.

Making a Second "Bottle" fake tire
Put transmitter in second bottle that was sealed with silicon. Was able to get receiver to sense both transmitters. But it is still a mystery how the transmitters turn on. High pressure (reading 20 or 25) seems to turn on, but not consistently.

Next Step
Make fake tire out of PVC parts, see if it can hold pressure.