What did you buy today? Post your latest purchase!

[gamalot]

That is bad.

I'd guess the crappy one is steel rather than phosphor bronze in the Jameco/Wisher.

I tested them with magnets. They should be stainless steel if they are steel. 

[nanofrog]

That is bad.

I'd guess the crappy one is steel rather than phosphor bronze in the Jameco/Wisher.

I tested them with magnets. They should be stainless steel if they are steel. 

Well, if it has to be steel, 5160* would be a better choice IMHO (HRC of 63 & can handle a lot of cycles). But for what it costs, you might as well use phosphor bronze. 

* Same stuff they make leaf springs on automobiles out of.

[thm_w]

A $3 bag of 45 degree N.O. Fan Sssshhhh 

Main bench supply done only kicking in at 8A'ish+ so silence 98% of the time.

Thats a good idea.
I found them here if anyone else is interested:
https://www.aliexpress.com/item/Free-shipping-5pcs-KSD9700-45-50-55-60-65-70-75-80Degrees-Normal-open-Temperature-Controller/32788286857.html
https://www.aliexpress.com/item/KSD9700-250V-5A-Normally-Open-NO-Thermostat-Temperature-Thermal-Control-Switch-DegC-20-25-30-35/32801427417.html

They show in the diagram though that the leads are polarized, I wonder why that would matter?

[djos]

FWIW, based on manufacturer P/N's on Jameco's site, they're from Wisher, which makes decent products. 

Two months ago, when I bought a Raspberry Pi at an online shop in Australia, I bought two breadboards by the way. After I received them, I did some simple tests and found that they were completely useless garbage. So I went to Amazon and bought some Jameo's.

I have attached two pictures, you can see the difference between them!

The Jameco looks like it's been left out in our Aussie sun causing the Bromine to leach and turn it yellow - you might need to retr0bright it! 

[rdl]

I bought one of those Jameco breadboards years ago. When I saw the color, I asked them if it was defective and was told that was the color they were supposed to be. Maybe it's supposed to be easier on the eyes or something, but I personally dislike the color yellow so I never bought any more.

[bitseeker]

FWIW, based on manufacturer P/N's on Jameco's site, they're from Wisher, which makes decent products. 

Two months ago, when I bought a Raspberry Pi at an online shop in Australia, I bought two breadboards by the way. After I received them, I did some simple tests and found that they were completely useless garbage. So I went to Amazon and bought some Jameo's.

I have attached two pictures, you can see the difference between them!

Wow! I've never heard (nor seen) a breadboard with that much resistance. Yikes.

[Specmaster]

FWIW, based on manufacturer P/N's on Jameco's site, they're from Wisher, which makes decent products. 

Two months ago, when I bought a Raspberry Pi at an online shop in Australia, I bought two breadboards by the way. After I received them, I did some simple tests and found that they were completely useless garbage. So I went to Amazon and bought some Jameo's.

I have attached two pictures, you can see the difference between them!

Some of those jumpers in the 2nd row don't look like they are fully inserted to me. If so then thats certainly going to add to the resistance measured.

[tooki]

FWIW, based on manufacturer P/N's on Jameco's site, they're from Wisher, which makes decent products. 

Two months ago, when I bought a Raspberry Pi at an online shop in Australia, I bought two breadboards by the way. After I received them, I did some simple tests and found that they were completely useless garbage. So I went to Amazon and bought some Jameo's.

I have attached two pictures, you can see the difference between them!

Wow! I've never heard (nor seen) a breadboard with that much resistance. Yikes.

I have a smattering of various breadboards from China, plus a good 3M one.

Most of them have negligible contact resistance, but I found one or two Chinese ones that have something like 2 ohms resistance on a single contact row. That said, it’s often just a particular contact row that’s problematic. So a series resistance test as in these pics here might really just be showing a few failed rows, while most rows are actually just fine. This, in turn, could be due to poor manufacturing, or due to the cheap contacts being damaged by inserting oversize leads (like a TO-220 without twisting the legs). Quality breadboards are more resilient to such abuse, but not immune to it.

[HighVoltage]

They just arrived...
4 x Agilent 34401A all broken.
One was opened up by the previous owner, he gave up on the repair and put all parts in a box.

[chickenHeadKnob]

They just arrived...
4 x Agilent 34401A all broken.
One was opened up by the previous owner, he gave up on the repair and put all parts in a box.

You must have the worlds largest collection 34401's. Didn't you already have like 20 units? Reminds me of the Hunt brothers who tried to corner the silver market.   I forsee an intervention by your friends.

[DC1MC]

Due to this imperialistic attitude, one could not find anything interesting in Germany, spread them around, will you   

 Cheers,
 DC1MC

[HighVoltage]

One can never have enough 34401A's and they are easy to find in broken state.

And they are fun to repair, since all schematics are around.
The first one has somehow a broken display, like it is completely dead.
However, it works perfectly over GPIB.

[DC1MC]

Hummh HV, if they are so easy to find in broken state, could you share one place where one can easily find them in broken state, 'cause fleabay and kleinanzeigen for sure aren't one of these places  .

Or maybe if there is so easy to get, you can divest yourself of one, for science you know  , I always wanted to make a display simulator, but my displays are working OK  .

 Cheers,
 DC1MC

 

[Mr. Scram]

It's hard to tell from one picture, but they seem to be in fair shape. Many of them are beaten to death or close to it. I like mine looking pretty, however futile and superficial that might be.

By the way, is something up with the forum? Many pages don't seem to load, like the unread posts page.

[Specmaster]

It's hard to tell from one picture, but they seem to be in fair shape. Many of them are beaten to death or close to it. I like mine looking pretty, however futile and superficial that might be.

By the way, is something up with the forum? Many pages don't seem to load, like the unread posts page.

Yes I'm having the same problem, the main index page is dead and the only way I can get access is by clicking on the link in an email notification of a reply to a subscribed thread, is this the same for you?

[Mr. Scram]

Yes I'm having the same problem, the main index page is dead and the only way I can get access is by clicking on the link in an email notification of a reply to a subscribed thread, is this the same for you?

I can see the new replies to my posts, but many other pages are broken in the way you describe.

[VK5RC]

A new chain, rear cluster gear set and new inner front chain ring for my road bike (with Shimano Ultegra Di2).
Boy getting a chain stretch gauge is expensive!

[PartialDischarge]

Fluke 80E 10kV divider with 1:1000 and 1:10000 outputs.
Accuracy of 0.01% and north of 28ºC this derates at only 2ppm/C , even so at a 10kV input, which at 10Mohms amounts to 10W. Resistors are wirewound not metal film so there must be a lot of good resistive wire inside
Teardown coming someday...

[Terry01]

Got some of this stuff yesterday.

[gamalot]

More Jameco breadboards. 

[DC1MC]

The cutest ever    1EUR tubular hex key, M4/5/6/7 for those hex spacers and posts, resistor for size.

It also has a hole to wear it on your key chain or around your neck, let's see Dracula melt that  .

 Cheers,
 DC1MC

[bob225]

The cutest ever    1EUR tubular hex key, M4/5/6/7 for those hex spacers and posts, resistor for size.

It also has a hole to wear it on your key chain or around your neck, let's see Dracula melt that  .

 Cheers,
 DC1MC

Thats a 1/8, 1/10 RC model tool, I have many of them from the kits I have build over the years, very useful indeed - But there's nothing like a proper nut driver to do the job

[BillB]

Just picked up an Amscope MU1000 camera for my Amscope SM-4T microscope.

[gamalot]

RPi3B+ 

[paulca]

I bought myself a new PC build.  I'll update with photos when it arrives tomorrow or Thursday, but little expense spared.

Ryzen 2700X, 16Gb 8Pack 3666Mhz DDR4, NVidia GTX 1070Ti, Asus Crosshair VII Hero X470 Mobo, Samsung M.2_2 Mve 256Gb 3000MB/s SSD, Samsung 500Gb SATA SSD, Corsair 750W Gold PSU, Corsair H100 water cooler, Fractal Designs Define R6 case.

£1760 delivered.