Read a bunch of stuff about hardware debugging. Learned a thing or two, but I have much further to go!
Hardware debugging
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Category Archives: Hardware
Make: Boards Guide
Today I discovered the Make: Boards Guide. It’s great. It has a comparison feature too, so you can compare board options side-by-side.
AliExpress sale
There is a sale on at AliExpress today. I picked up the following AU$881.75 worth of stuff for AU$225.03 (inc. tax and shipping).
Network Analysers
I’ve just been checking out the state of the art with regard to network analysers: Network Analysers: 56 Products Found.
RAACO 137386 STEEL CABINET
Today I discovered these RAACO 137386 storage cabinets. They look pretty good. The component drawers can be partitioned with these.
Early Content #11: Demo of the ALKOY Capacitor Discharge Pen | In The Lab With Jay Jay
This post is part of my video blog and you can find more information about this video on this show’s homepage which is here.
You can support this channel on Patreon: patreon.com/JohnElliotV
In this video I demo my new ALKOY Capacitor Discharge Pen.
The bench multimeter I use in this video is my OWON XDM1041 and the bench power supply is my RIDEN RD6006.
The demo circuit used a 1KΩ 1/4W resistor, a 25V 330μF electrolytic capacitor, and an 18V supply.
Thanks very much for watching! And please remember to hit like and subscribe!
Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!
Yum Cha Heat Shrink Wire Connectors |
Let’s go shopping!
Prototype Circuit Board
Also variously known as “stripboard” and “veroboard” I got myself some of this TZT 10PCS DIY 2.5×6.4 2.5*6.4CM Prototype Paper PCB Universal Experiment Matrix Circuit Board Single Row Continuous Hole 25x64mm. AU$4.71 for 10 pieces, delivered. The boards are fairly small, 25x64mm.
And also some of this: diymore 5PCS/Lot 50X100mm 2-3-5 Joint Universal PCB Boards Single Side Copper Prototype Print Circuit Boards Breadboard. AU$4.28 for 5 pieces, delivered. These are a little larger at 50x100mm.
I still haven’t found exactly what I’m looking for when it comes to stripboard, gonna keep my eye peeled. This is what I have so far:
FILCO Majestouch 2SS Edition Keyboards
I ordered two new keyboards this morning. I got a 104-key one and an 87-key one. The gory details are documented on the keyboard page on my wiki.
Usually I like to buy V3 keyboards from WASD Keyboards in America. But the price for the two keyboards delivered would have been AU$841, which was just a bit too expensive for me.
So I had a bit of a hunt around and I found these Japanese FILCO Majestouch 2SS Edition keyboards on Amazon:
- AU$202.55: FILCO Majestouch 2SS Edition FKBN104MSS/ECSP2B-RKL Full Size English Layout Cherry MX Speed Silver Axis with 3 Red Key Locks, Black
- AU$188.89: FILCO Majestouch 2SS Edition Tenkeyless English Layout Cherry MX Speed Silver Axis with 3 Red Key Locks, Black FKBN87MSS/ECSP2B-RKL
They both come with MX Speed Silver switches which are the ones I like.
While I was researching I found the following content mill articles which I enjoyed reading to learn more about mechanical keyboards:
QEMU/KVM Attaching a Virtual NIC Directly to a Physical Interface
Man, it took me a while to figure out how to do this! Over on Attaching a Virtual NIC Directly to a Physical Interface I figured out I could use this XML in Virtual Machine Manager (virt-manager) for my NIC device:
<interface type='direct'> <source dev='enp9s0' mode='bridge'/> </interface>
That then gets expanded automatically to something like this:
<interface type="direct"> <mac address="52:54:00:ce:5b:09"/> <source dev="enp9s0" mode="bridge"/> <target dev="macvtap4"/> <model type="rtl8139"/> <alias name="net0"/> <address type="pci" domain="0x0000" bus="0x10" slot="0x01" function="0x0"/> </interface>
Update: ah, balls. This doesn’t completely work, because the guest can’t connect to the host, and vice versa, even though both the host and the guest can connect to the internet. This is a problem for another day. Maybe this or this will help?
Watch Loupe
This morning my new eyeglasses arrived, they are these ones from AliExpress: Watch Loupe Glasses Magnifying Repair Tool Loop Magnifiers Watchmaker Jewelry Jewelers Magnifier Foreye Convenient Professional.
Rather than do an unboxing video I thought I’d just write it up in this blog post.
There’s a headband type thing that comes with them that looks rather cheap and flimsy (it is), but it’s actually quite functional and practical.
The 20X magnification is my fav, and I might even see if I can get something with higher magnification one day.
