Profile avatar
ruenahcmohr.bsky.social
Rue Mohr, Recreational Technologist. Robotics: Electronics, Programming, Mechanics. Not retro, but Z80 is the best of all time.
1,996 posts 1,298 followers 64 following
Regular Contributor
Active Commenter
Posts 27 Comments 23

Yay, the part finisher still works (it was only sitting out in the weather for a few years)

submitted 2 hours ago • 0 comments

On the cupric chloride test, I lost a bit more than the 1 side of the clad that I was aiming for. I masked it with tape and some came off. I most often do single sided pcbs. I have a LOT of double sided clad that I (usually) peel one side off to save etchant when making boards.

submitted 18 hours ago • 1 comment

And there we have it, the remaining bits are almost completely normal soldering stuffs. I CAN, but did not silk screen these. I did a lot of crazy things in the design and I'm glad I have an assembled one to use as a ref cause I'm not into figuring it all out again!

submitted 18 hours ago • 0 comments

Next I do a lot of drilling. Pretty much max speed on my drillpress, the bit is a #57 carbide with 1/8" shank. ... or is it 3mm? Ooooo....

submitted 18 hours ago • 1 comment

<side quest> I put away the etchant and poured in my air regenerated cupric chloride. UNFORTUNATLY I am 0% chemist, and despite the really good instructions on the internet, I dont know how to finish trimming this mix. I'm going to bubble it for a while and TRY etching 1 side off some clad stock.

submitted 19 hours ago • 1 comment

etched PCBs, next I need to drill them....

submitted 19 hours ago • 0 comments

Once the tank is all warmed up the PCB go in holders and into the tank. it takes about 6-8 minutes for the pcbs to etch.

submitted 19 hours ago • 0 comments

after FIXING THE HEATER, the tank is getting ready. There is an air bubbler in there to agitate the etchant. I usually set it to "good and warm" 2L tank, breakfast cereal container.

submitted 19 hours ago • 0 comments

2020, yes, that was a good year... (always hard stamp the tags or there will be nothing to read. Copper etchant, so dont make a copper tag) ammonium perfulphate or potassium persulphate, I had both for a while and I dont really know what this is. Its not dark blue tho, so its probably ok.

submitted 19 hours ago • 0 comments

so, after a BIT OF MACHINING I managed a pen+holder that was able to lay ink properly on the PCB. This ink is the pcb resist.

submitted 19 hours ago • 0 comments

ugh, this was the best pen too.... (squint, its there)

submitted 19 hours ago • 1 comment

see? perfect. I need to give this thing a blowdown while I'm in here... All the caps look ok :]

submitted 19 hours ago • 0 comments

oh man I have a lot of junk! all the junk a person needs, check out this junk! Its even for a low-profile computer (which the computer is)

submitted 19 hours ago • 1 comment

ok, problem, since the last time I used this system, the computer that did the plotter spooling got an upgrade and doesn't have a parallel port anymore... (parallel ports to PROPER handshaking, which you need for a slow device like a plotter)

submitted 19 hours ago • 0 comments

cmon cmon cmon.... one of these pens must not be dried up.... (these are test-plot pens for doing a print on paper to check the size of the PCB I need to cut)

submitted 19 hours ago • 0 comments

wow, the pile on that plotter is deep, this is the breadboard prototype of the 1 bit computer I have on my github... Still need to do the ALU for it...

submitted 19 hours ago • 0 comments

This is the software that works with the plotter (no, kicad doesn't, those files don't work for this) I had already designed this pcb on here, so its ready to go..

submitted 19 hours ago • 0 comments

The DOS workstation for my process booted in 3 seconds. Can anyone help me figure out whats wrong? :]

submitted 19 hours ago • 1 comment

First problem. I do the etch resist for my PCBs on a plotter. .... thats under this pile....

submitted 19 hours ago • 0 comments

ok, Rue PCB etching: This board is something that I asked myself to make more of, Its less of a real pcb and almost more of just a mechanical parts anchor. I'm not going to thead this properly, so this post is the end (the start end) I'm glad you already know how this ends.

submitted 19 hours ago • 0 comments

we had an #earthquake! I thought for a minute it was a jet plane flying REALLY LOW over the house. The center was quite local and rather shallow. I'm just a stones throw from sechelt.

submitted 1 day ago • 1 comment

Thought... By the time Rump tires to take over Canada, it'll be a reverse takeover cause there will be nothing left of the USA.

submitted 1 day ago • 2 comments

OK! this is esp-01 ADC via PWM converter, there were actually a lot of issues to get this working descently... silent video cause I had the music WAY too loud. The screen is the serial VFD. I might make some LCD versions.

submitted 1 day ago • 2 comments

I have some of these serial (9600 baud) VFD screens that are crazy useful for microcontroller projects when you just want to know wtf.

submitted 1 day ago • 1 comment

cnc go BZZZZZZZ I'v got it helping my old one slot some of those parts...

submitted 1 day ago • 0 comments

And then there were two! and then there were 5!

submitted 2 days ago • 0 comments

I'm sorry, I would come deal with your president issue, but I'm from another country, have no passport, and testing has shown that even with an RPG, I'm a really bad aim. 🤷

submitted 2 days ago • 2 comments