pi:poor_persons_ups
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
pi:poor_persons_ups [2023/03/19 13:27] – m0lte | pi:poor_persons_ups [2024/04/15 18:45] (current) – m0lte | ||
---|---|---|---|
Line 1: | Line 1: | ||
====== Raspberry Pi: Poor persons UPS ====== | ====== Raspberry Pi: Poor persons UPS ====== | ||
- | For a long while I’ve been looking for a cheap and easy solution for Raspberry Pi battery backup without lots of cost / complexity. This it it. That module is 12V to 5V at 3A, readily available off eBay. That diode is an old 6A4 but anything reasonably sized will do. The connectors are Wago blocks. The reds and the blacks | + | For a long while I’ve been looking for a cheap and easy solution for Raspberry Pi battery backup without lots of cost / complexity. This it it. That module is 12V to 5V at 3A, readily available off eBay. That diode is an old 6A4 but anything reasonably sized will do. A recommendation is a Schottky MBR1635 for low voltage drop. The connectors are Wago blocks. The positives |
+ | |||
+ | I am informed that a low value series resistor is sensible to limit current, should the mains go out for a significant period of time and the battery voltage drop too far. | ||
{{: | {{: | ||
{{: | {{: | ||
+ | |||
+ | ====== Some better versions ====== | ||
+ | |||
+ | Commercial product: West Mountain Radio Super PWRgate https:// | ||
+ | |||
+ | A lower current version based on mosfets https:// | ||
+ | |||
+ | A build: {{ :: |
pi/poor_persons_ups.1679232442.txt.gz · Last modified: 2023/03/19 13:27 by m0lte