Embed the temperature meter in the cap and have a plastic probe that sticks down into the thermos. Dump the arduino in favor of an ATtiny and LCD display with a supercap to hold a charge. Put ...

The concept of this design is to make the IR sensor measure the temperature of the thermal radiation emitted by the body being measured. The data acquired by the sensor will be sent to the ...

The simple wind meter (Figure 2b) operates on the same principle as a Thermal Probe. It can be calibrated by heating the diode with a certain current and adjusting the right trimpot to get a zero ...

Once set up, HomeKit will recognize the SwitchBot Meter Pro as a temperature and humidity sensor (though not as a CO2 monitor). That limitation aside, it still opens the door for useful automation ...