Voltlog #18 – InTheMail: 7020 LED Strip, STM32, STM8, Wireless Remote Dimmer

In this epissode I receive: A set of rigid 7020 white LED strips, Wireless Remote LED Dimmer, Maple Mini STM32, STM8 dev board, spade connectors and some Logitech Z2300 ALPS potentiometers.

Voltlog #17 – 5 inch LCD TFT Monitor With 2 CH Analog Input

In this video I do a quick review of a 5 inch LCD TFT Monitor With 2 CH Analog Input. This module was sent to me free of charge for review by gearbest.com. The module is based on the MST703 video decoder and if you want to know more about this chip check it’s datasheet in the links from the video description.

 

VoltLog #16 – Laptop battery teardown and lithium cell recovery

Today we’re going to be looking at some laptop batteries, we’re going to take them apart and attempt to salvage some lithium cells to use in other projects.

I have these two identical batteries coming from a Fujitsu Siemens laptop and they’re both dead. These batteries usually fail in one of two modes, they either have a failed electronics board and in this case they don’t communicate with the laptop motherboard anymore for correct management or they have one or more lithium cells failed and they don’t reach their nominal voltage anymore.I believe these two are in the second category where one or more cells have failed and they don’t reach their nominal voltage anymore.