Picking the best DC-DC converter for Arduino and ESP32 projects starts with a question that trips up a lot of beginners: do you need to step voltage down, step it up, or handle both because your power source swings across the target voltage? Buy a buck-only converter for a project that needs boost, and it … Read more
If you want your Arduino or ESP32 project to run without a USB cable, you need two things: a lithium polymer battery and a way to charge it safely. Most guides gloss over the details and just say “use a 3.7V LiPo.” This one covers the actual decisions: what capacity to choose, why JST polarity … Read more
If you’ve been powering your Arduino or ESP32 projects from a USB port or a random wall adapter, you already know the frustration: inconsistent voltage, no current limiting, and zero visibility into what your circuit is actually drawing. A proper bench power supply fixes all of that. It gives you adjustable voltage, adjustable current limiting, … Read more