Computers crash if they do not have enough voltage. Li-Ion batteries could explode during charging if they were deeply discharged. How can we prevent such events? We need so-called voltage supervisors. Cheap parts with a big effect, which usually do their job in the dark. Let’s tear them to the light and protect your ESP32 or Arduino from not booting correctly and your Raspberry from a crash. We will use KA75330, KA75450, and TPS3839 for our experiments. I am a proud Patreon of GreatScott!, Electroboom, Electronoobs, EEVblog, and others. Links: Raspberry Pi4 US: Raspberry Pi4 DE: Raspberry Pi4 : KA75330: KA75450: TPS3839G33: Power Supply: or ESP32 Breadboard friendly: The links above usually are affiliate links which support the channel (no additional cost for you). Supporting Material and Blog Page: Github: My Patreon Page: My Bitcoin address: 19FSmqbBzb5zsYB1d8Bq4KbxVmezToDNTV If you want to support the channel, please use the links below to start your shopping. No additional charges for you, but I get a commission (of your purchases the next 24 hours) to buy new stuff for the channel For Banggood For AliExpress: For : %20Spiess/ Please do not try to Email me or invite me on LinkedIn. These communication channels are reserved for my primary job