Month: September 2019

To build the cells of this diet for outdoor astrophotography setups, we sort the 18650 batteries. (the planned assembly is 6 sets of 3 batteries in parallel: 6S3P). As a reminder when you make up the cells (several batteries mounted in parallel) they must be similar, because it is the one with the lowest performance…

Another power supply for outdoor astrophotography. Less battery life and less power but it’s lighter and more optimized. Twelve 18650 batteries are managed by a BMS with active balance, to maximize battery life. The components have been kept to a minimum.

For information, I used isolated plugs, to be able to easily separate the BLOCK BMS from the battery packs, but this is not mandatory. The only focus of this step is at the switch. Indeed in order to simplify the power as much as possible, this one is at 3 positions, the closed circuit is…

The next step is wiring the battery packs. We will link the three 18650s in each case, connecting the 3 negative terminals, then the 3 positive terminals together each battery block, will form a cell. Each negative terminal of one cell will then be connected to the positive terminal of the next. On the first…

Construction today of the BMS block. Let’s start with a time laspe 8 hours 30 3D print summarized in just over 6 minutes of video … Previous next Adjusting the control stepdown. Two adjustments are possible, the voltage and the maximum intensity delivered. First of all, we will only adjust the voltage. Sense of knob…

A fan and temperature sensor set will ensure thermal regulation of the power supply. The fan is contained in a block placed at the base.

This is the first component constituting this mobile feed that is modular, I will add in a future article the links to the components used and all the files stl to download for 3D printing. 6 battery packs will be needed.