Temperature Sensor with USB Interface

The project illustrates a temperature sensor which gets interfaced to a PC using a USB port for collecting weather related date like the temperature.

The project has been named USbTenki where the word tenki originates from Japan which means weather and is pronounced as ten-kee. It has been designed for USB temperature sensor and was requested for the need to create a temperature + humidity sensor. Along with these features, an absolute pressure sensor has been added for the ability of reporting the atmospheric pressure. More types of sensors can still be added such as wind speed, wind direction, light, and lightning detection.

The project can be considered as low cost and can be interfaced with a computer-connected temperature sensor for monitoring a presumably unreliable air conditioning unit. To make it simpler, a game controller PCB can be re-used that connects to USB. This will connect the sensor to a PC via USB. The digital sensors were used since they are easy to handle because most sensors provide an acceptable precision and calibration is not required.

The two voltage selection resistors are installed on the back side since no voltage regulator is required.

Rest of the project