A long week of mouse hacking and projects

I’ve been a little busy on the workbench lately. I’ve been working late at the-day-job so I’ve been neglecting my workbench notebook and my blog for most of this week. I’ve got a ton of “fun” stuff planned for this weekend; no way I’ll get it all done. I won’t make you read through the whole…

The @JohnS_AZ Blogger Guilt Trip

There is a lot of content out on the internet… a lot.. but it’s amazing how much of it you can burn through on a day full of programming. I started picking up a couple more podcasts just because I’ve been running out my normal subscriptions. I started listening to ZombieTech; a podcast made by…

WWVB Time Signal Generator Test w/ HEX

[Edit: I’ve added the .asm code in the “Code” page in the menu above. Below you can find the .HEX file for easy programming] A successful test on my WWVB signal generator. I’m going to shy away from calling it a transmitter because I don’t think there is any allowances for any broadcasting on 60KHz,…

VFD Update: In Precharge / Configured

Slowly chiseling away. I got the terminals set up, all the motor set up, disabled most faults in advanced configuration and I now have the drive out of fault, temp sensor back working, and ready to drive waiting on the DC bus. I think if I read the manual right with my configuration that should…

VFD Update: AC retrofit to DC, Drive Start Up on DC bus.

I said I was going to wait until I had enough batteries to start this drive up but I decided I couldn’t wait. I took a 110VAC to 42VAC power supply that was lying around and fed that into the secondary of the fan transformer (690VAC tap). Through an undersized bridge rectifier I need to…

VFD Update, Stripped the AC front end.

I removed the input AC components today. The drive had a lot of weight in components just to drive a 110V fan. I’ll obviously have to replace that AC fan with a DC fan. It won’t have the CFM output of the original but I won’t be generating the heat it had. This monster was…

Sometimes you get what you pay for! An attempt to bring back SLA batteries

If you’re reading this, perhaps you’ve run across the endless forums of magic battery revival modules, advice for adding acid, water, salts.. whatever? I spent a solid day reading/surfing.. maybe there are a few magic ways to save your batteries? I don’t know lets see… but before I start let me say one thing: Have…

Weekend stepper fun!

I got got home to take delivery of this front end frame piece. Now I’ll be busy this weekend working on electronic steering. The PIC 16F1509 will be controlling all steering functions. I’ve written a remarkable amount of code for how long it’s been since I worked I a project with a F628A and 18F1330…

Doubts about the IGBT isolated drive voltage

Fresh out of repair I hooked up my IGBT pack for testing one channel. I had vaporized some traces off the secondary supply voltage. I hooked up the load, the low voltage drive and then my best guess on the isolated power supply. I guessed wrong. I was hoping because the Chiller had a good…

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