A forum post with a lot of good information on the Andonstar ADSM201 microscope. Some of the information there might still apply to mine.
Sony 18650 battery specifications
Repo for the ecDB project. Formally hosted at ecdb.net. An electronic database web app.
An electronics parts database.
Electronics components DataBase (ecDB) has been acquired by PartsBox.
PartsBox is an online app that lets you take control of your electronic parts inventory, BOM pricing, and small-scale production. It keeps track of where components are stored, what the current stock levels are, and which components are used in which projects/BOMs.
PartsBox significantly expands what ecDB offered, with lots of new features and a blazingly fast parts search. It is available commercially (with features like BOM pricing, barcode scanning, sub-assemblies, file uploads and lots more), but there is also a free hobbyist/maker version, with everything the hobbyist needs.
In this small project I will show you how to make a simple adjustable constant current load. Such a gadget is useful if you want to measure the capacity of chinese Li-Ion batteries. Or you can test how stable your power supply is with a certain load.