Jeff Keyzer

Thanks for coming to my talk! Great to see you at Teardown.

Anyone looking for a moderator? ☢️
www.govdeals.com/en/asset/650...

Teardown 2025: Useful Tools for Your Electronics Workshop: https://wp.me/pioCd-4bJ

AVR HV Rescue Shield The MightyOhm AVR HV Rescue Shield is a high voltage fuse programmer for Atmel AVR microcontrollers.

MightyOhm AVR HV Rescue Shield Kits are on sale this week! Sale ends Sunday. www.amazon.com/MightyOhm-AV...

Working on something different today. One jump ring broke off of this stained glass (not mine) and while I was tempted to try and repair it with rosin core solder I decided to get the proper solid core solder and acid? flux.

I see a couple rolls of 2mm on Amazon but for delicate repair work this is still huge.

Stained glass folks. Why is solid core solder for stained glass absurdly large diameter? 3mm or 1/8" seems to be the standard.

RIP Chris Knight 😢 #realgenius #valkilmer

Check out this fondue set by Swiss Toolmaker PB Swiss. I feel like every major tool company has a couple items like this.

King county also showing zero alerts. alerts.weather.gov/search?zone=...

Given these recent predictions from NWS Seattle, why are there still no active NWS alerts for Seattle? alerts.weather.gov/search?zone=...

Why don't modern CAT6 keystones have strain relief for the cable? Is this style of keystone considered acceptable for enterprise networking? Who makes enterprise-grade keystones? This one is from Cable Matters. For years Monoprice keystones had a zip tie but newer version doesn't.

I wrote this 24 years ago, on my birthday. wavelen.com/pics/hd/inde...

Am I missing any of the other major (reputable) electrolytic capacitor brands?

Also can someone tell Illinois Capacitor that this table isn't a substitute for a series chart?

Working on something today. I've been doing a lot of recapping recently and was getting tired of Googling pdfs. mightyohm.com/wiki/referen...

That's a great question! I'd argue no... not "gas tight". I need to look into this.

You know how those cheap Chinese alligator clip leads have folded and crimped wires? Turns out the American ones are like that too. I'm surprised to see this instruction sheet from Mueller. Can't we get an alligator clip that has a proper double crimp for conductor + insulation?

I guess? Two pihole servers going 24x7 for years. Haven't had an SD fail yet.

I find it very disappointing and surprising that there is still no officially supported in-situ upgrade path for Raspberry Pi OS. They expect you to write the new version of the OS to an SD card and copy over your config changes. Coming from Debian/Ubuntu, this is insane.

Yes, I'm learning this. However, when the leads are very close to the PCB it can be tricky to get the nozzle onto the end of the lead without damaging the PCB!

I'm not a fan of PCBs with leads that are bent tightly against the PCB. Makes desoldering difficult! Sony loved this technique and used it on lots of boards. Sometimes I just cut the part off and remove the leads one by one!

When did it become so difficult to sell used books on Amazon?

Hey, my Geiger Counter kit is now available to order from Digikey www.digikey.com/en/products/... thanks to @adafruit.com!

HP Agilent 8753D Firmware Upgrade Kit Revision 6.14 08753-60185 | eBay This is a reproduction of HP Firmware Upgrade Kit 08753-60185. The kit includes all of the components you'll need to upgrade your 8753D series VNA to firmware version 6.14. This is the latest firmware...

Is anyone looking for a firmware upgrade kit for their HP 8753D? I have just one left and due to the difficulty sourcing EPROMs I will not be making more. www.ebay.com/itm/16664817...

Here's the bottle.

Alternative packaging actually mentions DuPont. This is also known as CFC-113.

Nortronics Tape Head Cleaner QM-102 NEW, NOS, Sealed 2oz. USA Made | eBay NORTRONICS TAPE HEAD CLEANER. Photos represent typical idem condition. MODEL: QM-102. I have not attempted to conceal any flaws, defects or information.

Anyone looking for Freon-TF? This is an inexpensive source. Label on the bottle confirms it is TFTCE. Look up SDS if you are unfamiliar with handling this stuff. www.ebay.com/itm/16657923...

In my case the PSU went bad. I should have done more testing to try and figure out why it failed.