Voltlog #248 – Atorch Q7 USB Meter/Load With QI Wireless Charging

So this load is built with 3 active pcb’s as well as a fourth passive one as a front panel. They are joined with these brass standoffs and I think the standoffs act as circuit paths as well because I see no wires between the different levels. In order to get the alignment right during assembly the designer of these pcbs, made these corners rounded while these ones are diagonally cut and you can see these features along an entire side. This is a neat solution overall because it saves cost and as long as the screws are tight these should provide adequate connection.

Voltlog #85 – STM32 OLED T12 Soldering Station

Today we are taking a look at this soldering station which I got from Taobao (Chinese Ebay). This unit is fully contained, power supply is built-in, it works with T12 Hakko tips and it has a nice 1.3 inch OLED display. It’s powered by the STM32 microcontroller which should make it easy to hack if anyone is interested.

Here are links to the items shown in the video:

Voltlog #82 – DIY Adjustable Analog DC Electronic Load

In this episode I am building an analog adjustable dc load with parts easily obtainable from ebay and banggood. The advantage of such a dc load is that you can understand how it works, modify or repair it if necessary far easier than you would with a digital one. I was able to push mine up to 60W dissipation, but it is recommend to stay under 50W to protect the mosfet.

Here is a list with links to the parts used in this project: