A USB Charger That Goes Up To 11 10

by @edent | # # # # # # | 1 comment | Read ~498 times.

The good folks at Ntonpower have sent me this utterly ridiculous, and fantastically over-powered USB charger. It has ten frickin' ports each one capable of delivering 2.4 amps. So, what's it like? Straight up, it looks like a plastic toast rack. It's a chunky beast, but surprisingly lightweight. You won't have trouble lifting it, but… Continue reading →

Alexa powered smarthome control for Sonoff

by @edent | # # # # # # # # | 3 comments | Read ~5,014 times.

I've been sent a couple of Sonoff smarthome gadgets. You can read my review of the S20 WiFi plug socket and the POW in line power controller. Here's a video of me controlling them from my Amazon Alexa: The latency seems a little slow - hard to tell if that's Amazon only relying on US… Continue reading →

Review: Sonoff Pow - WiFi power switch and monitoring

by @edent | # # # # | 2 comments | Read ~5,085 times.

The good folks at Sonoff have sent me a bunch of kit to review. See my previous review of the S20 WiFi plug. This is the Sonoff Pow - a WiFi enabled in-line power switch. Set Up Wiring up the Pow is relatively easy. The cover to the terminal block is secured with a simple… Continue reading →

AC DC AC DC AC DC AC DC

by @edent | # # # | 5 comments | Read ~1,178 times.

My solar panels deliver pure Direct Current electricity into my house. All my house has Alternating Current circuits. Therefore, I need an inverter to change the DC to AC. This is inefficient. Most of the electronic devices I own are powered by DC. So I plug little wall-warts into the AC sockets to convert back… Continue reading →

Let's get the IEC Power Symbol into Unicode

by @edent | # # | Read ~866 times.

I've just launched a campaign to get the IEC Power Symbol into Unicode! A couple of months ago, I asked this question on HackerNews I was looking for the electrical "standby" symbol - AKA IEC5009 / IEEE1621. You know, the circle with the line through it. The one that's on every single bloody piece of… Continue reading →

How Our Solar Panels Have Performed After 1 Year

by @edent | # # # # | 7 comments | Read ~236 times.

Last year, Liz and I took the plunge and had Solar Panels installed on the house we rent out. I've been tracking their progress, and so now it's time for our yearly update. We based our estimations on the Europa Solar Calculator which estimated that they would generate around 2,700 kWh per year. Annoyingly, we… Continue reading →

Universal Power Supplies

by @edent | # # # # | 4 comments | Read ~193 times.

In 1998, Douglas Adams wrote a essay about the de facto Universal Power Supply - the in-car cigarette lighter. He was half right. We've settled on USB as the standard  - simply because it's ubiquitous. A few days ago, the ITU finally caught up with the rest of the world and endorsed micro-usb as the… Continue reading →