One day I intend to Build My Own 555 Timer.
In the recent past I posted How a 555 Works as a Timer which refers to an interesting video on the topic.
In that video the speaker gives us a mnemonic for remembering the transistor schematic symbols. Referring to the direction of the arrow on the symbol the “NPN” transistor “Never Points iN”. Good to know!
Today on IRC some of my friends recommended or mentioned:
Also, honorable mention: Eliza for the Neo6502 running Morpheus firmware and Neobasic.
And there are heaps more boxes at HackerBoxes.
I got two of these Resistance Box 0-9999.9Ω Adjustable Lab Resistor Substitution Box Precision 1W Variable Knob Switch Boxes from AliExpress, but they kind of suck a bit. The resistors are only 1/4 Watt, the precision only 5% or 10%, and I had to mod it myself to replace the terminals with banana sockets.
Today I came across Build a Pro Decade Resistor Box for Cheap! PCB & 3D Print Files Included which includes all the plans necessary to make my own resistor box and with 1 Watt resistors.
I might take this on some time.
I plan to binge watch all of these videos: @OpenTechLab. I hope I can find the time!
I want to learn more about sigrok and OpenTechLab seems like a good place to start…
I found this old series of videos from OpenTechLab which starts here: [001] Sigrok and Logic Analyzers.
There is more about sigrok over here:
In Build – gusmanb’s 24 Channel 100MHz Logic Analyser from Happy Little Diodes I learned about this Logic Analyzer project. I would like to try building one of these for myself one day too.
This is a reminder for Future John. Check out ZNC for IRC bouncing: https://wiki.znc.in/ZNC
This is on my agenda (but not with priority, I will circle back for this one): Learn KiCad.
Today I’m going to try and fix this mess.
