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Test Equipment / Re: Equipment Discounts from Saelig
« Last post by rickv14623 on Today at 08:13:21 pm »Looking to buy a Micsig CP503B current probe. Can I please get the Saelig discount code? Thanks!
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Test Equipment / Re: Choosing between entry-level 12-bit DSOs
« Last post by shapirus on Today at 08:09:46 pm »I WILL make a choice, and soon ... but first I'm still wading through some of the lengthier threads to try to get a better feel for how each machine would be to use.Now let's make one thing straight. If you decide to choose the Rigol, then before making the purchase you need to make damn well sure that you do understand, as fully as possible, how the Rigol's fan sounds, and then:
- either decide that you are totally fine with it;
- or have no objection against opening the case to either:
a) reduce the stock fan's RPM by adding inline resistors or replacing one of the resistors in the the respective buck converter's feedback voltage divider, then monitor the resulting CPU temperature (e.g. https://www.eevblog.com/forum/testgear/hacking-the-rigol-dho800900-scope/msg5341472/#msg5341472);
b) or remove the stock fan and install an external one (e.g. https://www.eevblog.com/forum/testgear/hacking-the-rigol-dho800900-scope/msg5338634/#msg5338634)
To my taste that fan was so loud and, what's much worse, so whiny, that I couldn't stand it and installed an external one. I'm not alone, but some folks apparently seem to not mind it.
The fan issue sort of aligns with the rest of this scope:
- con: it requires hacking for best results
- pro: it's hacking-friendly
As far as the Siglent's fan goes, I don't know, but I'm pretty sure that it's much better, as every detail suggests that that scope was developed by proper engineers and not a bunch of marketing jerks. But either way it would be a good idea to check on that one too.
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Computers / Re: Format a 256GB pendrive with FAT32 using a windows 10 pc
« Last post by magic on Today at 08:09:42 pm »Windows users are supposed to use exFAT on 256GB volumes and stop questioning things.
(with 128KB cluster size which would give Mr. Plummer a heart attack)
How hard is it to buy a new TV recorder if you old one sucks?
(with 128KB cluster size which would give Mr. Plummer a heart attack)
How hard is it to buy a new TV recorder if you old one sucks?
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Test Equipment / Re: Equipment Discounts from Saelig
« Last post by rickv14623 on Today at 08:07:20 pm »Looking to get the sds804 hd or the rigol dho924. or BOTH
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General Technical Chat / Digikey asks for "What is your physical address for your file?"
« Last post by terrance on Today at 08:05:34 pm »Hi,
I ordered some parts on digikey. Then they sent an email asking the question. What even does "your physical address for your file" mean?
I ordered some parts on digikey. Then they sent an email asking the question. What even does "your physical address for your file" mean?
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Beginners / Re: Amphenol GT series connector - help with rewiring
« Last post by themadhippy on Today at 08:05:01 pm »Quote
The cable has Amphenol GT series connectors. Probably due to their wide customizability, they are not kept in stock and have a factory lead time of 16 weeks
diffrent make ,same standard
https://uk.farnell.com/c/connectors/circular-connectors-components/circular-mil-spec-equivalent-connectors?product-range=vg95234&no-of-contacts=19contacts
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Test Equipment / Re: Fluke 187,189 continuity beep sound
« Last post by coromonadalix on Today at 08:03:03 pm »yep normal for 187 189 ....
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Microcontrollers / Re: Starting with STM32 (NUCLEO-L412KB)
« Last post by Picuino on Today at 08:02:08 pm »I have added to the PATH the path where the application STM32_Programmer_CLI.exe was located and now it does not give the previous error.
Now it gives this error:
Now it gives this error:
Code: [Select]
Sketch uses 13016 bytes (2%) of program storage space. Maximum is 524288 bytes.
Global variables use 1300 bytes (0%) of dynamic memory, leaving 162540 bytes for local variables. Maximum is 163840 bytes.
-------------------------------------------------------------------
STM32CubeProgrammer v2.16.0
-------------------------------------------------------------------
ST-LINK SN : 066AFF575056716587092913
ST-LINK FW : V2J36M26
Board : NUCLEO-L412KB
Voltage : 3.26V
SWD freq : 4000 KHz
Connect mode: Under Reset
Reset mode : Hardware reset
Error: Unable to list supported devices
Error: Cannot identify the device
Failed uploading: uploading error: exit status 19
Repair / Re: Desoldering advice
« Last post by antenna on Today at 07:58:33 pm »Looking at it closer, it is a Sn Cu Bi Ag alloy that I used, and looking it up, the MP is supposed to be between 215°C and 233°C. The surface was cleaned with wick fairly well though and when I applied this stuff, I had to crank it up to get it to flow. I will remember not to mix alloys in the future though. Thanks!It tested fine, all components under it tested good too. I used some 63-37 and wicked it off to remove the low MP alloy, then put the relay back in with some Sn Cu Ag stuff that melts at 237°C instead of using the 60-40 188°C stuff I usually use.I assume your SnAgCu is actually 227C.
Anyhow, in the future, I’d avoid mixing up all these alloys — or at least “rinse” with your final solder multiple times. In particular, what you really want to avoid is soldering with tin-bismuth after using tin-lead: lead lowers the melting point substantially, and can result in an alloy that melts below 100C!
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Microcontrollers / Re: Starting with STM32 (NUCLEO-L412KB)
« Last post by Picuino on Today at 07:53:00 pm »you could start with arduino v2.xx and install all stm32 librairies / boards ... download and install "stm32programmer" , not the same as stm32 cube
when you have all ready, com port and port type selected .... you can use arduino examples on stm32 without problems
i use nucleo L432KC and nucleo144-F412ZG boards like this ...
you use the integrated st-link of the nucleo boards for the programming interface
When uploading the program to the board it asks me for the file STM32_Programmer_CLI.exe