Author Topic: What did you buy today? Post your latest purchase!  (Read 1324109 times)

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Offline blueskull

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Re: What did you buy today? Post your latest purchase!
« Reply #9175 on: September 17, 2019, 01:34:25 am »
I am using 3210 size ceramic resonators on my boards for FT232H and FT2232H. Those things have built-in load capacitors so it can be smaller than a 2016 crystal and are usually even cheaper.

On a good day, that will work, but that's not guaranteed.

Murate Ceralock (just used as a reference) has 0.07% initial error, 0.11% tempco and 0.07% aging, making it, for the worst case, 0.25% from rated nominal frequency.

USB 2.0 high speed requires 500ppm (0.05%) device clock accuracy, and the FTDI chip particularly requests 50ppm. Either way, using a Ceralock is betting on sheer luck.
 

Offline technix

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Re: What did you buy today? Post your latest purchase!
« Reply #9176 on: September 18, 2019, 03:23:08 am »
I am using 3210 size ceramic resonators on my boards for FT232H and FT2232H. Those things have built-in load capacitors so it can be smaller than a 2016 crystal and are usually even cheaper.

On a good day, that will work, but that's not guaranteed.

Murate Ceralock (just used as a reference) has 0.07% initial error, 0.11% tempco and 0.07% aging, making it, for the worst case, 0.25% from rated nominal frequency.

USB 2.0 high speed requires 500ppm (0.05%) device clock accuracy, and the FTDI chip particularly requests 50ppm. Either way, using a Ceralock is betting on sheer luck.
So far my sample size of three worked just fine.
 

Online beanflying

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Re: What did you buy today? Post your latest purchase!
« Reply #9177 on: September 18, 2019, 03:36:53 am »
Brought a 50% discounted set of smaller vicegrips from E14 https://au.element14.com/duratool/d00114/locking-plier-4pc/dp/1447413



And a set of big boy Murata Current shunts https://au.element14.com/murata-power-solutions/3020-01103-0/shunt/dp/1498416 Ordered 10, 100 and 500A ones.
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Offline BravoV

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Japson sliding variable resistors
« Reply #9178 on: September 18, 2019, 02:57:41 pm »
Hoarding moment strikes again, $3 bucks a piece, and still not sure what to do with it yet.  :palm:

Sliding variable resistors, 10 Ohm max. at 4 Amp.

As usual, shot with TO-220 as reference size.

Offline rsjsouza

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Re: Japson sliding variable resistors
« Reply #9179 on: September 18, 2019, 04:47:53 pm »
Hoarding moment strikes again, $3 bucks a piece, and still not sure what to do with it yet.  :palm:

Sliding variable resistors, 10 Ohm max. at 4 Amp.

As usual, shot with TO-220 as reference size.
Nice score! I love those high power parts!!!

I lost count of how many 50, 100W power resistors I got from the local surplus store... :palm:
Vbe - vídeo blog eletrônico http://videos.vbeletronico.com

Oh, the "whys" of the datasheets... The information is there not to be an axiomatic truth, but instead each speck of data must be slowly inhaled while carefully performing a deep search inside oneself to find the true metaphysical sense...
 

Offline BravoV

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Re: Japson sliding variable resistors
« Reply #9180 on: September 19, 2019, 03:28:09 am »
Nice score! I love those high power parts!!!

I lost count of how many 50, 100W power resistors I got from the local surplus store... :palm:

Thanks, yeah, in the age of miniaturization that everything is so damn small nowadays, I have a weird fetish  :-[ at electronic components that have real weight that I can feel.

Well, with two 160W rheostats, I guess just for giggle, to use these twins to torture my bench PSUs.  :-DD
 
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Online beanflying

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Re: What did you buy today? Post your latest purchase!
« Reply #9181 on: September 19, 2019, 11:00:07 am »
Cleaning up my watch list items on evilbay and decided I had enough pocket money left for one of these cheap PIC Loggers to try out. eBay auction: #391932720671
Came up in a thread some months ago but not a lot here that I can find.

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Online ledtester

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Re: What did you buy today? Post your latest purchase!
« Reply #9182 on: September 19, 2019, 12:47:32 pm »
Cleaning up my watch list items on evilbay and decided I had enough pocket money left for one of these cheap PIC Loggers to try out. eBay auction: #391932720671
Came up in a thread some months ago but not a lot here that I can find.

I found listings searching for "icp12":

https://www.ebay.com/sch/i.html?_from=R40&_nkw=icp12&_sacat=12576&LH_TitleDesc=0&_sop=15&_osacat=12576&_odkw=icp12




« Last Edit: September 19, 2019, 12:51:15 pm by ledtester »
 

Online beanflying

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Re: What did you buy today? Post your latest purchase!
« Reply #9183 on: September 19, 2019, 01:15:00 pm »
There is also a website https://www.piccircuit.com/shop/ in my case with postage evilbay was a touch cheaper. Software is available here for anyone wanting to take a look.
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Online Black Phoenix

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Re: What did you buy today? Post your latest purchase!
« Reply #9184 on: September 19, 2019, 02:25:25 pm »
Probably the best alternative in my opinion regarding of having a serial port:



Lost my old one (back when it was only Keyspan in the name, bought in 2006) and some work arrived where I needed and didn't had a serial port adapter available.

From using with a Renishaw QC10 Ballbar System to Rollover Cisco Cables, from NSN MGW/MSS terminal connection to old measurement equipment, it never let me down.
« Last Edit: September 19, 2019, 02:28:00 pm by Black Phoenix »
 
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Offline rsjsouza

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Re: Japson sliding variable resistors
« Reply #9185 on: September 19, 2019, 03:33:29 pm »
Nice score! I love those high power parts!!!

I lost count of how many 50, 100W power resistors I got from the local surplus store... :palm:

Thanks, yeah, in the age of miniaturization that everything is so damn small nowadays, I have a weird fetish  :-[ at electronic components that have real weight that I can feel.

Well, with two 160W rheostats, I guess just for giggle, to use these twins to torture my bench PSUs.  :-DD
I use mine for this task as well. Also, to torture test my VRLA batteries.

The other day I bought several very large screws + nuts in the same inner diameter of the resistors. They make excellent heatsinks, especially when attached to a metal panel.
Vbe - vídeo blog eletrônico http://videos.vbeletronico.com

Oh, the "whys" of the datasheets... The information is there not to be an axiomatic truth, but instead each speck of data must be slowly inhaled while carefully performing a deep search inside oneself to find the true metaphysical sense...
 

Offline technix

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Re: What did you buy today? Post your latest purchase!
« Reply #9186 on: September 19, 2019, 05:04:43 pm »
Not exactly bought, but I built three FT232H based USB JTAG adapters in the form of USB flash drives. Information taken from Digilent website are used to approximate a Digilent JTAG/SMT2. Target connector implements ARM Cortex Debug Connector for its compact size.
« Last Edit: September 19, 2019, 05:09:18 pm by technix »
 
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Offline tooki

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Re: What did you buy today? Post your latest purchase!
« Reply #9187 on: September 20, 2019, 10:13:51 am »
Probably the best alternative in my opinion regarding of having a serial port:

(Attachment Link)

Lost my old one (back when it was only Keyspan in the name, bought in 2006) and some work arrived where I needed and didn't had a serial port adapter available.

From using with a Renishaw QC10 Ballbar System to Rollover Cisco Cables, from NSN MGW/MSS terminal connection to old measurement equipment, it never let me down.
Totally. I was working at an Apple dealer in early 1999, just after the original iMac came out, which was the first computer to ditch its legacy ports in favor of USB. With USB peripherals still nascent, and people having assorted existing gear to connect, adapters were a big deal at the time. Keyspan made the only serial adapters that were reliable enough to recommend for most applications. (IIRC, they made some that were RS-422/RS-232 compatible like classic Macs’ onboard serial ports.)

When I was looking into getting a USB-RS-232 adapter recently, I looked for Keyspan and was relieved to discover that the products are still made; at least the company that subsumed Keyspan is a reputable one!
 

Offline rsjsouza

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Re: What did you buy today? Post your latest purchase!
« Reply #9188 on: September 20, 2019, 03:22:42 pm »
Probably the best alternative in my opinion regarding of having a serial port:

(Attachment Link)

Lost my old one (back when it was only Keyspan in the name, bought in 2006) and some work arrived where I needed and didn't had a serial port adapter available.

From using with a Renishaw QC10 Ballbar System to Rollover Cisco Cables, from NSN MGW/MSS terminal connection to old measurement equipment, it never let me down.
Totally. I was working at an Apple dealer in early 1999, just after the original iMac came out, which was the first computer to ditch its legacy ports in favor of USB. With USB peripherals still nascent, and people having assorted existing gear to connect, adapters were a big deal at the time. Keyspan made the only serial adapters that were reliable enough to recommend for most applications. (IIRC, they made some that were RS-422/RS-232 compatible like classic Macs’ onboard serial ports.)

When I was looking into getting a USB-RS-232 adapter recently, I looked for Keyspan and was relieved to discover that the products are still made; at least the company that subsumed Keyspan is a reputable one!
Does this adapter have full HW handshake?

I am always looking for additional suppliers for these adapters, as we never know if a manufacturer will simply kill their models.

I am currently using this Trendnet TU-S9 that has full HW handshake and it works really well, but I never know if/when this will last in production...
Vbe - vídeo blog eletrônico http://videos.vbeletronico.com

Oh, the "whys" of the datasheets... The information is there not to be an axiomatic truth, but instead each speck of data must be slowly inhaled while carefully performing a deep search inside oneself to find the true metaphysical sense...
 

Offline technix

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Re: What did you buy today? Post your latest purchase!
« Reply #9189 on: September 20, 2019, 03:45:50 pm »
Probably the best alternative in my opinion regarding of having a serial port:

(Attachment Link)

Lost my old one (back when it was only Keyspan in the name, bought in 2006) and some work arrived where I needed and didn't had a serial port adapter available.

From using with a Renishaw QC10 Ballbar System to Rollover Cisco Cables, from NSN MGW/MSS terminal connection to old measurement equipment, it never let me down.
Totally. I was working at an Apple dealer in early 1999, just after the original iMac came out, which was the first computer to ditch its legacy ports in favor of USB. With USB peripherals still nascent, and people having assorted existing gear to connect, adapters were a big deal at the time. Keyspan made the only serial adapters that were reliable enough to recommend for most applications. (IIRC, they made some that were RS-422/RS-232 compatible like classic Macs’ onboard serial ports.)

When I was looking into getting a USB-RS-232 adapter recently, I looked for Keyspan and was relieved to discover that the products are still made; at least the company that subsumed Keyspan is a reputable one!
Does this adapter have full HW handshake?

I am always looking for additional suppliers for these adapters, as we never know if a manufacturer will simply kill their models.

I am currently using this Trendnet TU-S9 that has full HW handshake and it works really well, but I never know if/when this will last in production...
There is always the DIY route. FT232H/PL2303/CH340C/HT42B534-SO16/STM32F042F4P6 + MAX3245 = win.
« Last Edit: September 20, 2019, 03:47:39 pm by technix »
 

Offline tooki

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Re: What did you buy today? Post your latest purchase!
« Reply #9190 on: September 20, 2019, 03:59:36 pm »
Does this adapter have full HW handshake?

I am always looking for additional suppliers for these adapters, as we never know if a manufacturer will simply kill their models.

I am currently using this Trendnet TU-S9 that has full HW handshake and it works really well, but I never know if/when this will last in production...
Honestly I don't know, I'd ask Tripp-Lite. (Or maybe Black Phoenix can tell?)
 

Online Black Phoenix

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Re: What did you buy today? Post your latest purchase!
« Reply #9191 on: September 20, 2019, 04:32:13 pm »
There is always the DIY route. FT232H/PL2303/CH340C/HT42B534-SO16/STM32F042F4P6 + MAX3245 = win.
Quote
EDIT: Now that I read that you DIY route with more attention, it will work, although I still keep what I said below.

Prolific chipset converters are wonderful - when they work. They're one of the most problematic ones available and require close matching of the Prolific driver to your system's current service level. Widows updates are known to break Prolific drivers from time to time.

Converters based on the FTDI chipset generally have the least number of issues. One great advantage of FTDI is that if you move the adapter to a different USB port, it generally will not change serial port numbers (but that you guys know a lot more than me).

The Keyspan USA-19HS is the only thing I've ever been able to get to work with all of the devices I needed to use (PLCs, shipping scales, network equipment, Renishaw QC10 Ballbar System, the list goes on). This is because it has an FTDI chip and based around the TI 75LV4737A, so it has a real serial processor, as opposed to a lot of the other brands/models, which use a Prolific chip. The Prolific chips are just emulators and only work about 75% of the time.

I used basically from the generic black smoked plastic adapter with unmarked chips to Belkin ones based in the Prolific chip. They are good for switch connections (Cisco Rollover cable and most networking).

Does this adapter have full HW handshake?

I am always looking for additional suppliers for these adapters, as we never know if a manufacturer will simply kill their models.

I am currently using this Trendnet TU-S9 that has full HW handshake and it works really well, but I never know if/when this will last in production...
The Tripp Lite / KeySpan have HW handshake yes.

Its based on the TI 75LV4737A Multichannel RS232 Line Driver/Receiver.
« Last Edit: September 20, 2019, 05:14:19 pm by Black Phoenix »
 
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Offline Mortymore

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Re: What did you buy today? Post your latest purchase!
« Reply #9192 on: September 20, 2019, 06:37:54 pm »
Another multimeter for the collection,  :palm:
Iso-Tech IDM505, from evilBay for £75 with shipping costs included
 

Offline rsjsouza

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Re: What did you buy today? Post your latest purchase!
« Reply #9193 on: September 20, 2019, 07:41:41 pm »
The Keyspan USA-19HS is the only thing I've ever been able to get to work with all of the devices I needed to use (PLCs, shipping scales, network equipment, Renishaw QC10 Ballbar System, the list goes on). This is because it has an FTDI chip and based around the TI 75LV4737A, so it has a real serial processor, as opposed to a lot of the other brands/models, which use a Prolific chip. The Prolific chips are just emulators and only work about 75% of the time.
This transceiver is quite robust indeed - it really should work well in the wildest environments out there.

I used basically from the generic black smoked plastic adapter with unmarked chips to Belkin ones based in the Prolific chip. They are good for switch connections (Cisco Rollover cable and most networking).
I have a Belkin (forgot the model number, discontinued by now) that works ok. Not everywhere, but still does the job here and there.
Vbe - vídeo blog eletrônico http://videos.vbeletronico.com

Oh, the "whys" of the datasheets... The information is there not to be an axiomatic truth, but instead each speck of data must be slowly inhaled while carefully performing a deep search inside oneself to find the true metaphysical sense...
 

Online Black Phoenix

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Re: What did you buy today? Post your latest purchase!
« Reply #9194 on: September 21, 2019, 12:25:23 am »
I have a Belkin (forgot the model number, discontinued by now) that works ok. Not everywhere, but still does the job here and there.

Is the purple grey one that looks like a disk?



This one is not bad in reality, it works great, but is too big.



This one is so, so...

Regarding the Prolific ones, there are fakes one and real ones:





More info:
https://www.eevblog.com/forum/reviews/note-how-to-not-get-scammed-with-prolific-(pl2303)-usb-serial-adapters/
 

Offline technix

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Re: What did you buy today? Post your latest purchase!
« Reply #9195 on: September 21, 2019, 01:45:27 am »
Prolific chipset converters are wonderful - when they work. They're one of the most problematic ones available and require close matching of the Prolific driver to your system's current service level. Widows updates are known to break Prolific drivers from time to time.

Converters based on the FTDI chipset generally have the least number of issues. One great advantage of FTDI is that if you move the adapter to a different USB port, it generally will not change serial port numbers (but that you guys know a lot more than me).

The Keyspan USA-19HS is the only thing I've ever been able to get to work with all of the devices I needed to use (PLCs, shipping scales, network equipment, Renishaw QC10 Ballbar System, the list goes on). This is because it has an FTDI chip and based around the TI 75LV4737A, so it has a real serial processor, as opposed to a lot of the other brands/models, which use a Prolific chip. The Prolific chips are just emulators and only work about 75% of the time.

I used basically from the generic black smoked plastic adapter with unmarked chips to Belkin ones based in the Prolific chip. They are good for switch connections (Cisco Rollover cable and most networking).
I would personally prefer Holtek HT42B534 over FTDI or Prolific though, as that chip implements a proper USB CDC ACM protocol stack.
 

Offline thinkfat

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Re: What did you buy today? Post your latest purchase!
« Reply #9196 on: September 21, 2019, 02:19:39 pm »
Today I bought a GPSDO with a Symmetricom OCXO on Ebay. 80€ delivered from China. With some luck it will be here before Christmas. Two weeks ago I bought two defective Efratom LPRO, both are now working again.
 

Online Black Phoenix

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Re: What did you buy today? Post your latest purchase!
« Reply #9197 on: September 21, 2019, 03:30:31 pm »
I would personally prefer Holtek HT42B534 over FTDI or Prolific though, as that chip implements a proper USB CDC ACM protocol stack.

Just as curiosity, do you know any brand that manufactures using that controller or is only DIY route too?
 

Offline bsfeechannel

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Re: What did you buy today? Post your latest purchase!
« Reply #9198 on: September 21, 2019, 08:52:24 pm »
Aspirin.
840924-0
 
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Online GreyWoolfe

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Re: What did you buy today? Post your latest purchase!
« Reply #9199 on: September 22, 2019, 02:24:54 am »
Mrs GreyWoolfe got me to a neighborhood yard sale and among other things, I got an old Craftsman Band saw with 1/3 HP motor/stand and a Craftsman 15" scroll saw for a total of $50.  Both work very well and I got extra blades for both.  The bonus was that the owner put the band saw on wheels which makes it easier to store when not in use, like I did to my table saw and miter saw.  Everything is on wheels so I can store them against the wall but easily move them out into the garage proper or the driveway for use.  Also got a self contained commercial HVLP paint sprayer, no compressor needed; a Chicago Electric rotary hammer with chisels and a bunch of hand tools/clamps in good shape.  I really thought when I went from a 26" tool chest to a 61" tool chest, it would take a long time to fill.  I apparently was being overly optimistic.  I never did realize how much stuff I had scattered around the garage that didn't fit in the old box.  It is awesome to have everything in one place, organized to make sense in my pea sized brain.  Any more stuff and I will have to take back the old tool chest from the son-in-law that lives with us that will never use it but Mrs GreyWoolfe said to give it to him when I wanted to sell it.

Mrs GreyWoolfe got a cooler that will fit between the seats of the van, a nice heavy wooden low table for the TV/electronics in a stain she liked and a free rusty frog for one of the flower beds in front of the house.  I think she loves the frog most of all. :-DD
That which doesn't kill you still requires a co-pay.
 


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