I’m getting a RD6006W USB/WiFi DC voltage bench power supply with the S12D case. I’m gonna power it off an old ATX power supply. So I needed a molex to banana plugs cable, and I made one:
I threw a DC barrel power jack on the 5 volt line. Finished with heat shrink tubing, my new favourite thing.
This is an excellent article, I only wish I had time to read it: So you want to build an embedded Linux system?.
Over on The difference between a mixed-domain oscilloscope and a mixed-signal oscilloscope:
“An oscilloscope is essentially a sensitive auto-ranging voltmeter.”
The EEVblog guys over on Are Mixed Signal (MSO) Oscilloscopes Worth The Money? says that no, they’re probably not. They are, however, “the duck’s guts”. :)
Been pottering in my lab:
I have this USB Logic Analyzer which I want to test:
Figured this was a great chance to try out my new XR2206 function generator:
Hmm. Needs power! The XR2206 datasheet said it could support a wide supply range, from 10V to 26V. Figured this was a good chance to try out my new ATX power break out board:
I need a power cable from round lugs on the ATX supply:
to DC male for the function generator:
connected with a good length of wire:
and professionally finished with heat-shrink tubing:
had to break out my soldering station:
and make myself a power cable:
to connect the ATX power supply:
to the function generator:
Testing the logic analyzer can wait for another day. :)
Have just discovered EEVblog with this one: EEVblog #652 – Oscilloscope & Function Generator Termination Demo. Interesting stuff! Tip: always use a x10 probe on your scope.
Got myself an XH-M229 board so I could repurpose an old ATX power supply. Apparently it’s suitable to use 1 amp fuses. Gonna send the 12V rail into my RD6006W bench power supply.
This on Hacker News today: Controlling RGB LEDs With Only the Powerlines: Anatomy of a Christmas Light String.
I made some notes about my 300in1 diodes. I have switching diodes, rectifier diodes, zener diodes, and germanium diodes. One thing to note is that germanium diodes are supposed to have a forward voltage of 300mV. One diode I thought was a germanium diode (it was clear with two black bands but no other markings) had a forward voltage of 600mV, I’m not sure what’s up with that, so I put it in my “unknown parts” drawer.
Note to self: my mate Mitchell from Battery World, Penrith hooked me up with new batteries for my PowerShield Defender 1200VA systems: ‘LOVE UPS’ and ‘ORAC UPS’. The batteries have a 12 month warranty if there turns out to be problems.