[Udo Klein] was working with some 1N4148 transistors and was interested ... The screenshot above is mapping the voltage measurements from a row of diodes (see the video after the break to get ...

Instead of buying a thermocouple or using an LM75 or similar temperature-measurement IC, [acidbourbon] uses a bog-standard 1n4148 diode. The current passed through a diode, at a given voltage ...