WattmeterHP Photosmart C5280 All-In-One is printer, scanner and copy machine. It is pretty new and I expected it to be resource friendly. First I checked how much energy uses power supply alone, with no printer connected. It was 0.7W. Not bad.
When I connected printer, and after power draw ...
It's been almost half a year since I bought powermeter for USB, so it's time to start some test for 5V devices and maybe later even separate category, as I wrote on my blog.
First tested device is Huawei 3131 - GSM modem described long time ago. I plugged ...
Eizo flexscan L355 is yet another example of equipment, which is better to leave on standby. It uses 2.2W when on standby, and 2.1W when powered off. Difference is very slight, but still - no point in using power button.
Didn't check how much power does it use ...
Some time ago I described power consumption of Linksys WRT54GL. Pengagram Cerberus P6369 is cheap router with 4 Ethernet LAN ports and 150 Mbps Wi-Fi (802.11n). This one wasn't mine, so just a quick measurement when on idle router was performed (WAN cable plugged in). The result was ...
Another audio and computer equipment. This time let's take a look on old computer speakers that are used by my dad. They are branded as X-Techologies model XT-200, but I'd rather call it no name. ;-)
It's an old technology, so I wasn't surprised that there's ...
After a long break, another equipment. It's really old Sony audio system MHC-510. This one is real energy thief! It uses 14.1W of power when in CD mode (no CD inside). Switching to AUX mode lowers power usage to 12.8W.
Playing music didn't change energy consumption ...
Some time ago I built NAS from Raspberry Pi. I also played with my wattmeter, and wrote down results.
NAS was build from Raspberry Pi 1 Model B (see Wikipedia, active USB hub Unitek Y-206P and HDD Toshiba 2,5" 250GB (can't recall exact model), connected via USB.
When ...
Yet another old PC computer. Previously I wrote about AMD Sempron 2300+. This one is newer, some kind of two core (not sure if it is Dual Core or Core 2 Duo), but power draw is similar.
It takes between 5.2 and 5.9W when powered off. When idle ...
Did you know, how much power need desktop computer when it is idle? Whole 4.7W when it's off (motherboard is still powered, Wake On LAN may be active etc. Pretty much. huh? This is old Sempron 2300+ with ATX power supply.
When it's powered on, it uses ...
Another old networking device. Switch Surecom ep-805sx. I found in some documentation, that power draw for this switch is 2.8W. Wattmeter showed a bit more - 3.4W, but if I recall correctly, at least three ports were used (connected). Pretty much for such a simple device, but... it's ...
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