Last year, ESR was one of the first companies to launch a MagSafe wallet accessory with full support for Apple's Find My network, using an on-board rechargeable module to tap into the network of ...

It may not beat its rival's AMS unit, but Elegoo's multi-color module is pretty cost effective ...

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In an earlier blog post I did a teardown analysis of the XL4015 DC-DC Buck Converter module. I recently received an improved version of the same module. I purchased it from an online seller in China.

When you own an off-warranty luxury car, the Sword of Damocles hangs over your engine compartment by a horse’s hair. Your ears perk up at every sound. Was that a tick? How about that? How about that?

Recently, I exhausted my stock of common passive infrared (PIR) motion sensor modules and was looking for a new one to play with. I searched the web for a small type with self-contained electronics.