[MaBe42] used the classic LM358 op amp for most of the circuits, along with 1N4148 diodes where possible and 1N4004s where needed – not for their higher power rating, but for their stronger leads.

[rawe]’s simplification of this is to get rid of the transistors and just plop a single 1N4148 diode in there ... 1-Wire temperature sensors. Both the circuit and the tool work with the most ...