Intro Plenty of devices are running on power all the time, even when we are not using them. Sometimes all they do is monitor for the user to press a button or interact with the devices, but many modern devices maintain network connectivity. This allows them to wait for some user interaction which may come through a network connection from a computer, phone or other device. Some of these devices are doing so with low… Continue reading
Intro I spent quite a bit of time trying to design a digitally controlled power supply. I even have some prototypes and three articles, Part 1, Part 2 and Part 3. One day it hit me: across the years, I built multiple prototypes, spent a lot of time on it and never ended up anywhere. Why? because I did not really need one and I did not have any pressure to build one. So this… Continue reading
Intro As I was mentioning in my 1000.1000 Hardware selection, I have opted for the cool RFM69HW radio module. Weirdly enough, in quite a few sources (big distributor and ebay) the higher power HW module is cheaper. So there ie no reason not to get the higher power module, given quantity discounts. But I want it to operate at lower power most of times. The datasheet does not show any differences at lower power, so… Continue reading
An in-depth view of the new PeakTech 6225A 30V 5A switch mode laboratory power supply showing very good results. Continue reading
How do you test a power supply? With an Analog Discovery controllable electronic load, of course! Continue reading
Got a device that needs periodic rebooting? Try this! Continue reading
How do some topologies of power supplies perform? Find out! Continue reading
Some tricks to make your 3D printer more silent. Continue reading
A simple on-line 5V UPS for raspberry pi and others, using off the shelf modules. Continue reading
How much standby power do your devices burn? I’m hacking an energy meter to be super sensitive and measure the tiniest vampire power. Continue reading