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Search: Posts Made By: clearchris
Forum: General Electronics Technical Discussion 07-17-2020, 10:42 PM
Replies: 23
Views: 1,327
Posted By clearchris
Re: APC BACKUPS-RS550 not charging battery

Did you check the date code on the "new" battery? Depending on where you get them from (don't get from amazon or ebay) they might not turn over quickly. Lead acid batteries go fast when they aren't...
Forum: General Electronics Technical Discussion 07-17-2020, 10:24 PM
Replies: 42
Views: 1,859
Posted By clearchris
Re: Here is a new twist to using an ATX Power Supply

It looks round, but it's not. And depending on where you measure it, it could be the right size or too small. But when you put something round in the printed hole, it won't fit.



Be careful...
Forum: General Electronics Technical Discussion 07-11-2020, 12:08 PM
Replies: 42
Views: 1,859
Posted By clearchris
Re: Here is a new twist to using an ATX Power Supply

I think your fit issues have much less to do with shrinkage, and more to do with the number of faces on your printed circle. Go here and look at the green cylinders.
...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 07-10-2020, 09:47 PM
Replies: 6
Views: 514
Posted By clearchris
Re: Can thermal paste cause corrosion?

If acetone and IPA doesn't work, brake cleaner will take off nearly anything. Just don't burn (solder) the brake cleaner or it will give off very poisonous phosgene gas.
Forum: General Electronics Technical Discussion 07-10-2020, 06:12 PM
Replies: 3
Views: 229
Posted By clearchris
Re: Siglent SDS2352X-E scope?

Rigol seems have have sat on their laurels for a few years. I have read good reviews of Siglent's scopes, but I don't have one, and no experience with one. I'm possibly in the market as well, so...
Forum: General Electronics Technical Discussion 07-09-2020, 11:52 AM
Replies: 23
Views: 1,327
Posted By clearchris
Re: APC BACKUPS-RS550 not charging battery

If you left this idle for a year, it's likely your batteries are dead. Lead acid batteries do not take well to being left idle, just like in your car. I have a UPS that I'm not using at the moment,...
Forum: General Electronics Technical Discussion 07-09-2020, 11:48 AM
Replies: 42
Views: 1,859
Posted By clearchris
Re: Here is a new twist to using an ATX Power Supply

In general, for two straight pieces to fit together, I usually add 0.2mm gap, and that works perfectly. Circles get 0.1mm added to the radius or 0.2mm to the diameter. Parts often still require a...
Forum: General Electronics Technical Discussion 07-06-2020, 02:53 PM
Replies: 42
Views: 1,859
Posted By clearchris
Re: Here is a new twist to using an ATX Power Supply

Nice. I bet it was pretty quick to design too. 3d printers are great for stuff like this.
Forum: General Electronics Technical Discussion 07-01-2020, 10:02 PM
Replies: 4
Views: 217
Posted By clearchris
Re: Some one posted a comment about modifying some G code for some kind of heater set

Also, chinese pid controllers are really cheap now, you can pick one up for $10-15. Really not bad, comes with an LCD display and controlls too. Almost not worth building your own unless it's for...
Forum: General Electronics Technical Discussion 07-01-2020, 09:40 PM
Replies: 4
Views: 217
Posted By clearchris
Re: Some one posted a comment about modifying some G code for some kind of heater set

Are you talking about using your 3d printer to pre-heat boards? I don't think those will get hot enough. And with the hot plates, you don't really need to do a profile, you just need tight...
Forum: General Electronics Technical Discussion 07-01-2020, 08:38 PM
Replies: 4
Views: 217
Posted By clearchris
Re: Some one posted a comment about modifying some G code for some kind of heater set

That's me! What do you need?

https://www.badcaps.net/forum/showthread.php?t=83344
Forum: General Electronics Technical Discussion 07-01-2020, 08:29 PM
Replies: 42
Views: 1,859
Posted By clearchris
Re: Here is a new twist to using an ATX Power Supply

Yeah, if you are ready to gradute from MS 3d Paint, freecad is nice imho, I'm not ready to post the files to this one, but the box it's based on (including the usb buck converter mount) is up here:
...
Forum: General Electronics Technical Discussion 07-01-2020, 08:17 PM
Replies: 42
Views: 1,859
Posted By clearchris
Re: Here is a new twist to using an ATX Power Supply

A fuse is a pretty easy solution, good idea.

I designed a cradle that fits that module pretty much perfectly. There are two screw holes for a small plate with a lip that holds the back in. The...
Forum: General Electronics Technical Discussion 07-01-2020, 07:49 PM
Replies: 42
Views: 1,859
Posted By clearchris
Re: Here is a new twist to using an ATX Power Supply

There's a protection diode on the input, not sure if that's sufficient though. Otherwise, the circuit is rather simple. It uses an XL2001 buck converter, which does have output short detection at...
Forum: General Electronics Technical Discussion 07-01-2020, 07:04 PM
Replies: 42
Views: 1,859
Posted By clearchris
Re: Here is a new twist to using an ATX Power Supply

Sure, here you go. I have 4 of them in there. The can get warm, so I added vents, haven't had all of them going at once yet. Listing says 3a, but the datasheet for the chip says 1.8a. They work...
Forum: General Electronics Technical Discussion 07-01-2020, 05:19 PM
Replies: 42
Views: 1,859
Posted By clearchris
Re: Here is a new twist to using an ATX Power Supply

Great minds think alike. I just did this the other day, it's a four port USB charger based on a laptop power supply and 4 usb buck converters. Pretty happy with the design, I'm going to make some...
Forum: General Electronics Technical Discussion 07-01-2020, 04:28 PM
Replies: 0
Views: 130
Posted By clearchris
Building a Magnetizing Fixture for Stepper Motors

I have some nema 23 stepper motors, and I'd very much like to replace the shafts. However, removing the rotor from the housing demagnetizes and damages them. These motors are assembled, and...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 05-14-2020, 05:37 PM
Replies: 11
Views: 584
Posted By clearchris
Re: Solder paste recommendations please

I have heard of people using IPA to thin out the paste again. I haven't tried it myself though.
Forum: Equipment Usage, Soldering, Techniques, and Reviews 05-14-2020, 12:08 PM
Replies: 11
Views: 584
Posted By clearchris
Re: Solder paste recommendations please

Spider: I was referring to 0.032 wire. Wire may go bad, but it will take a long time. However, you can prolong the life of your solder paste by keeping it refrigerated. I keep mine in a sealed...
Forum: General Electronics Technical Discussion 05-14-2020, 10:16 AM
Replies: 51
Views: 1,410
Posted By clearchris
Re: Electric oven tripping circuit breaker after turned on for 3-5 minutes

Well, considering I have replaced a lot of mechanical thermostats, and I have never seen one that trips breakers, I'm going to say the thermostat is unlikely. What seems more likely to me is that...
Forum: General Electronics Technical Discussion 05-13-2020, 08:58 AM
Replies: 51
Views: 1,410
Posted By clearchris
Re: Electric oven tripping circuit breaker after turned on for 3-5 minutes

Also make sure your connections are solid. If you have a loose connection, that can cause tripping.
Forum: General Electronics Technical Discussion 05-13-2020, 12:05 AM
Replies: 42
Views: 1,859
Posted By clearchris
Re: Here is a new twist to using an ATX Power Supply

You just have to power through the initial pain, watch some youtubes on your chosen software. Don't think you can just start using them, you can't. The programs are incredibly powerful, but they...
Forum: General Electronics Technical Discussion 05-12-2020, 11:56 PM
Replies: 8
Views: 384
Posted By clearchris
Re: NETGEAR extender power supply problems recap working good now

I just recap my router every 2-3 years. I had one going for almost 8 years, until internet speeds outpaced it's ability to keep up. Still have the router too, runs openwrt, might see if I can get...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 05-12-2020, 08:38 PM
Replies: 11
Views: 584
Posted By clearchris
Re: Solder paste recommendations please

Yeah, the mechanic's 63/37 is pretty much the standard for dirt cheap, but decent solder paste. There's probably better out there, but not from ali or ebay. You would have to go to a legit supplier...
Forum: General Electronics Technical Discussion 05-12-2020, 11:38 AM
Replies: 51
Views: 1,410
Posted By clearchris
Re: Electric oven tripping circuit breaker after turned on for 3-5 minutes

I'd just not use the RCCB because it would require ripping more out of the oven or the wall socket. If you hook it up as you said, I'd consider that safe enough to not worry about additional...
Showing results 1 to 25 of 413

 
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