Measuring thrust of cheap 1S coreless motors (for a possible ESP32 μdrone)

I recently took part in a hackathon, where each team was given a DJI Tello drone for hacking. We had a lot of fun and I really liked this small, nimble drone, which could be flown inside and had a camera, which allowed you to stream video to your computer via WiFi (and then for … “Measuring thrust of cheap 1S coreless motors (for a possible ESP32 μdrone)”

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Arduino Universal Battery Charging Shield update

One of my most viewed projects ever (both on Instructables and Github) is my AVR Universal Battery Charger. It was also one of the very first projects I ever published, so there wasn’t a proper schematics or board layout (back then I simply didn’t care), my code was messy and the hardware had some flaws. … “Arduino Universal Battery Charging Shield update”

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3D printed charger for Yi 4K camera battery

I own an action camera – the Yi 4K – and I am very satisfied with it. However, even though it has longer battery life than a GoPro, it still runs for only ~90 minutes on a single battery. For this reason, I bought a bunch of replacement batteries from Ebay for just 6 dollars/piece! … “3D printed charger for Yi 4K camera battery”

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Lithium Battery Utility Board V1.2

I use lithium batteries a lot. However, they are not the easiest to use – you need a dedicated charging IC, complicated protection circuitry, boost module to power 5 V circuitry, switches, connectors… So I designed a board with all of these features. This is hopefully the last and final revision of my Lithium Battery … “Lithium Battery Utility Board V1.2”

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