I did, they were mediocre at best. Now they have replacement sleds which make the same linear rails feel twice as good at least. In the last batch at least ... 2018-06-19 15:33:54 +0000 UTC View Post
Got a BLDC in a NEMA23 enclosure: https://www.ebay.com/itm/162789541036
I've replaced the standard magnet encoder (green PCB ring) with a CUI AMT102 so that ODRIVE can try and operate it precisely. I couldn't get it to wo...
2018-06-16 20:13:03 +0000 UTC View Post
This broken beauty was sent by a viewer who bought 2, repaired one and didn't need the other any more.
It seems to have mostly computer problems for now (and a missing 400$ step attenuat...
2018-06-15 16:38:34 +0000 UTC View Post
The switching CC driver started killing the output electrolytic capacitors for some reason. They get hot and end up in a fluffy explosion. Will have to investigate!
2018-06-13 23:19:03 +0000 UTC View Post
My last laser driver consisted of a high efficiency switching DC-DC converter 'to get close' and classic precise linear regulation to get the current precisely right. That works well and is safe, but not very energy efficient.
This bloody battlefield is the result of me trying to make the DC-DC co...
2018-06-09 18:24:25 +0000 UTC View Post
It seems like the whole world is waiting for the new PACE ADS200 station https://www.eevblog.com/forum/manufacture/newest-pace-ads200-production-station-(a-jbc-...
2018-06-06 15:25:50 +0000 UTC View Post
https://www.digikey.com/product-detail/en/apex-microtechnology/MP108FD/598-1407-ND/1762080
On an aluminium PCB ... I hope with pre-regulation I can make the OSMU effic...
2018-06-06 08:48:14 +0000 UTC View Post
Would you look at that working distance ... madness!
Only thing it seems to lack is display + HDMI out at the same time. But maybe that could be patched with a little HDMI doubler?
2018-06-05 15:28:08 +0000 UTC View Post
There has been only one thing I managed to do in the heat wave of the past week: Taking dogs to the pond. But cool stuff keeps piling up:
1. Fiber laser EP02:
Anyone remember my ferrofluid clock plans? https://youtu.be/fdWlvf4-izc?t=238 based on this piece of art https://www.youtube.com/watch?v=dOCGQ...
2018-05-31 11:26:23 +0000 UTC View Post
Meaning the camera board and and the display assembly. No good for component-level inspection, unless you find a suitable lens. But maybe someone can come up with another creative application? Let us know, the comment with the most 💖 by next Sunday wins!
2018-05-27 19:00:59 +0000 UTC View Post
A few YouTube commenters didn't like my previous 8 minute advertisement, but this one guy decided to actually do something about it: He sent me a very sick Advantest Spectrum Analyzer and is hoping for a lengthy repair video like back in the good ol' days.
In conclusion: I should make more boring ...
2018-05-26 16:50:00 +0000 UTC View Post
I've tried various ways of extending the voltage range of the LT1970 which I wanted to build the OSMU around:
Pretty difficult, but worth the effort I think, very cool controller!
Clicking is the current limit of my PSU
2018-05-21 11:50:26 +0000 UTC View Post
AS WELL AS the surveillance python! (But not the eye piece adapter, can't find it :(
Comment with the most hearts in 7 days wins! Free international shipping, but I think this will not go past customs without an obolus.
Have a nice weekend. Go!
2018-05-18 17:41:54 +0000 UTC View Post
^ Low voltage differential probes for USB, HDMI or LVDS
^ TekVPI adapter for Tektronix Scopes
^ Fiber La...
2018-05-18 14:04:04 +0000 UTC View Post
I am getting more negative feedback than usually and my first reaction was 'well, screw them'. But there are a few of 'them', so they might have a point ... what do you think?
What went wrong and how can I improve? If you have any suggestions, I'd love to hear them! No need for sweet talk, I can t...
2018-05-15 22:26:26 +0000 UTC View Post
The upper rotor seems seized, maybe because it uses air bearings and needs to be operated correctly? Or is it dead and eligible for a destructive teardown?
2018-05-15 11:14:02 +0000 UTC View Post
Gotta be careful, these might be addicting ...
2018-05-14 23:59:29 +0000 UTC View Post
https://www.elektormagazine.com/pages/get-to-know-elektor-magazine-marco-reps
Automatically ends after 4 months, includes unlimited access to their archive of DIY projects.
Featuring a 0.9° stepper, a hollow shaft stepper and this thing: https://www.welectron.com/JMC-iHSV57-Integrated-Servo-Motor
2018-05-11 10:12:32 +0000 UTC View Post
Someone in the YouTube comments suggested that I should use an IR laser lens in front of a thermal camera. This one is perfectly transparent, which is a good start but I think I need a 3d printed holder for more consistent results. Would be interesting to see how heat propagates through a compone...
2018-05-10 20:06:19 +0000 UTC View Post
I used to redirect everyone who wanted to build my JBC controller to the Unisolder project, which is much more sophisticated. MUCH more sophisticated, holy moly
These 3 are non-functional and I offered to...
2018-05-08 20:15:21 +0000 UTC View Post
It's cool and all, but I really don't need a device telling me how quickly time passes 😱
The comment with the most hearts in 7 days wins!
2018-05-06 17:40:34 +0000 UTC View Post
Just trying to make them send me their Tesla coil next ...
We've grown a lot in the last month and I have a feeling that the OSMU announcement has something to do with that ...
Well, as you can see in earlier posts, I have been working on that idea for a while now and even made some progress. Some of you have even helped with the circuit design, so...
2018-05-01 18:25:36 +0000 UTC View PostMany new 5$ (and more) supporters have joined last month, thank you very much guys 🤑 I've been feeling bad for not making a lot of special 5$ content and now I am feeling worse about it, so time to set it straight.
Does anyone care about special content? Do you just want the OSMU asap? Or do yo...
2018-05-01 17:59:44 +0000 UTC View Post
I've been using the HP differential probe more frequently lately for stepper motor phase current measurements and power supply noise. Since isolation and current shunts are important points in the OSMU as well, I want to try and make a minimalist version based on an AD830 IC.
It'll only be good up...
2018-04-28 17:55:23 +0000 UTC View Post