Questions tagged [buying]

Questions seeking recommendations for specific products or places to purchase them are off-topic as they are rarely useful to others and quickly obsolete. Instead, describe your situation and the specific problem you're trying to solve.

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Where to find electron gun? [closed]

The contexte I am working with an old cathodoluminescence device to do petrographic analysis on ancient marbles. It look like this: To function it use a electron gun that looks like this: As you can ...
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A male-to-male cable for the MJ-4PP-9

I'm building an Ergodash which requires a MJ-4PP-9 socket and a matching TRRS cable. I believe I've got the right female with the following dimensions. However, all the male-to-male cables I've got ...
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38 votes
7 answers
4k views

Parts shortage, no stock, what now? (canonical reference question)

As a small business, student, or hobbyist, sometimes the parts I need are unavailable (no stock anywhere). Maybe authorized distributor will take order but they will not ship for 10, 20, 30 weeks, ...
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What type of transformer is this and what should I be looking for?

I'm aware it's a step down transformer but you know how some transformers are 9-0-9 v transformers, yeah, what's this? By what should I be looking for, i mean what should I type if I'm googling it for ...
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Why are Samsung NAND flash memory chips so hard to find?

I'm looking at NAND flash memory chips for a home project I'm working on. There seems to be quite a few manufacturers available, Micron seems a good choice (even though a lot of their chips, mostly ...
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6 votes
6 answers
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Can LabVIEW be used instead of an oscilloscope to measure signals?

I've been thinking about buying an oscilloscope for self usage. However, searching for oscilloscopes on Google reveals that they are very expensive - the cheapest I found was about $200. It turns out, ...
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3 votes
3 answers
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Beginner question: what does it mean for a TinyFPGA BX to be sold without pins?

This might come across as a really silly question for some of you, but to give more context - I want to buy a gift for someone else and I have found a TinyFPGA BX, but it says "without pins"....
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Quintic QN8007B RoHS information?

We are planning to use the Quintic QN8007B FM transmitter in our new design because it is quite cheap and has I2S interface. I believe this chip is no longer produced, but it is possible to get hold ...
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Help needed finding laptop FFC keyboard connector

I have a Thinkpad T440 keyboard that I'd like to convert to a USB keyboard. I've been looking for an FFC connector for it and it's been difficult finding it. It has 32 pins and 0.5mm pin pitch. The ...
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2 answers
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Project with smart phone like camera

I have an idea for a DIY electronics project which involves a camera where I want the camera to be small. I thought may be to get a camera component similar to the ones used in smart phones. But my ...
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2 votes
1 answer
622 views

Understanding the difference of optocouplers vs relays and choosing the right replacement

I'm a bit overwhelmed by the sheer amount of variations in optocouplers and since I've never used one before in any project I don't really know what criteria to look out for. A colleague of mine ...
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How to look for a good quality 11mm rotary encoder?

The rotary encoder attached to the wheel of my dear logitech MX1000 started glitching a few weeks ago. I took it out, tried cleaning it the best I could but it was still bad. So I went shopping ...
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4 answers
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Why do some oscilloscopes have several input channels?

Just was thinking to buy an oscilloscope, thus went to a shop and started to rummage all of the shops to buy an osci. which could be suitable for me. Read specifications of them. Some features was ...
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2 votes
2 answers
497 views

"Electromagnet 5kg DC 3V 5V 6V 12V" - what do these multiple voltages mean?

I wanna buy an electromagnet from aliexpress and many of them are lifter magnets and have 6V, 12V, 24V and 5kg. So if i choose the 6V option does that mean the magnet can lift 5kg at 6V? Why would ...
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5 votes
3 answers
461 views

IC Price Discrepancies (General Information) [closed]

Looking for some insight into what drives IC price discrepancies across suppliers. Espcially comparing places like digikey and mouser to aliexpress For example: I'm looking into buying Maxim ...
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How to buy electronic components for little projects? [closed]

I have some projects in mind, some of them under development, and I want to design PCBs for them with little SMD components. So I have been choosing some of the ones I need in websites like Digikey or ...
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3 answers
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Where to get logic gate transistors

I am going to be working in a project involving logic gates and would like to start practical testing. However, I cannot seem to find anywhere transistors that match typical Boolean operations. While ...
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-3 votes
2 answers
186 views

How much it costs to buy a mini-computer's schematics? [closed]

I think nowadays many of companies buy a design(schematics) of a board and only build it physically! I want to know, if I wanna buy a mini-computers information to build it, how much it will cost? ...
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1 vote
2 answers
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What situation does it make sense to mod a toaster oven instead of just buying a reflow oven?

I have seen kits like this online http://whizoo.com/reflowoven to modify a toaster oven to use as a reflow oven, but they seem like a significant amount more work and lower quality than just buying ...
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5 votes
2 answers
768 views

Searching for electronics components in mouser.com

I'm trying to get into electronics and read that mouser is a good place. I wanted to buy a couple of leds, just like this one. But searching for "led" or "simple led" yields pages and pages of results....
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1 vote
2 answers
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2 channel per circuit component election

I was looking for some references for a level shifter connected to an intel edison and a found that they used a 74LVC(H)1T45 which have one channel per circuit. Then I found the same IC but with two ...
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6 votes
2 answers
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What does "ku" or "kU" mean with regards to procuring ICs? (not about RF)

NB: This is not referring to RF subject matter. I'm seeing 1ku and 10ku on procurement documentation for purchasing motor driver ICs (TI DRV8811 and some others). Does this mean "one-thousand units"? ...
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2 votes
1 answer
485 views

Programming MSP430 based chips (sans Launchpad)

I'm wanting to move into working with the full range of MSP430 chips, especially their Ultra Low Power versions. As I understand it, I'll need the chip I want to program, a JTAG programmer, and the ...
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4 votes
1 answer
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What's the difference between EMSE vs. IMSE when buying components? (Linear Technology parts?)

For example, see this page for buying a LTC3388 step-down regulator, and note the difference between the LTC3388EMSE-1#PBF and LTC3388IMSE-1#PBF. What's the difference? Is this notation specific ...
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Is it possible to implement remote controllers with Bluetooth BLE? [closed]

I have been thinking of making bluetooth remote controllers with bluetooth low energy modules that can act as broadcasters and observers (and "peripheral" for set up) How good would that design be (...
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is there a difference between these 3 diodes?

http://www.mouser.fr/Search/Refine.aspx?Keyword=1N5819-E3/73 1N5819-E3/73 1N5819-E3/53 1N5819-E3/54 the first one is 4x cheaper than the last, why ? aren't they all the same ?
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1 vote
2 answers
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High quality IR projector for depth detection

I want to build my own depth sensor like the way Kinect does it, using IR and a Camera but I can't find anywhere where I can get the "IR Camera". I do not need a CMOS board as I will be computing ...
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6 votes
4 answers
3k views

Are more expensive parts worth it?

The prices of components of supposedly the same type and with the same parameters vary strongly between manufacturers. Assuming my use does not come close to the absolute maximum ratings, is it worth ...
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0 votes
3 answers
74 views

Find product lead dimensions

I am building a project for a robot on breadboard, and I have come across the need for a voltage regulator. I have an existing voltage regulator, but it will not fit into the holes on my breadboard. ...
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2 answers
279 views

Does C-1602A-1YN LCD use the HD44780 controller?

I am new to using PIC microcontrollers and electronics in general. I have been reading a tutorial on how to interface a PIC with a HD44780 compliant LCD. As I have been shopping for a LCD I have been ...
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1 vote
1 answer
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Where can I buy a thin metal cable?

I need conect two small printed circuit board. I can use any metal cable (what is the correct name for it?) so I buy this. It use the number "NU 30" but I don't find this number in other place and it ...
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0 votes
1 answer
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How to get started with electronics and specifically cheap microcontrollers? [closed]

I have a birthday coming up and would like to try and "get into" electronics. Now seems like the ideal time to finally get enough components to get started. However I need advise choosing what to get. ...
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4 votes
1 answer
2k views

Building An E-Ink Wall

The Idea When I heard about Mirasol and Electrowetting the first time, I considered this techniques to be useful for building a wall-hung touch screen where you can show notes, calendarings, drawings ...
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5 votes
2 answers
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Doubts related to the Arduino Ethernet with PoE

I implemeted a system by using the Arduino Uno and the Ethernet Shield without PoE. Now, I am thinking to use the Ethernet with PoE but I have following doubts, even if I read the Official ...
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15 votes
5 answers
9k views

How to find socket for keyboard connector?

I am looking for a socket which is able to receive the connector of the ThinkPad X41's keyboard. How do I identify the socket so that I can find it on the (German) market? Background: I want to build ...
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1 vote
3 answers
3k views

Cheap linear actuator recommendations? [closed]

I've been doing a lot of research into linear actuators, and have come up pretty much empty handed in finding any small sized (lifting force 10-30 newtons) linear actuators for a doable price (30-50 ...
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1 answer
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Buying quality electronic devices

As we know there are companies that make cheap and bad stuff and there are others which make good stuff i.e. tested and with warranty. Is there a certified way such as ISO stamps to check for the ...
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0 votes
3 answers
3k views

Where to buy an SR Latch [closed]

I am looking for a simple SR Latch. I'm new to electronics though and just doing a hobby project/teaching myself. Are SR Latches sold (I'm hoping to avoid building mine because I actually need at ...
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0 votes
3 answers
1k views

What is the best website to place orders for electronics components online in the USA? [closed]

I need to start ordering electronics components and I am trying to figure out who to use. I want to pick one website to use for all my needs, so they need to have a diverse selection of components, ...
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15 votes
5 answers
1k views

How Do You Decide Between Analog Chip Manufacturers?

I'm an electronics beginner and I find myself often needing to pick an IC for an analog application with no prior knowledge. In the domain of microcontrollers, it's very clear that I should use Atmel ...
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4 votes
3 answers
349 views

How to buy difficult-to-find electronic parts?

A RF receiver project I'm working on calls for a very specific SAW bandpass filter. I've checked all the usual sources here in the US (Jameco, Mouser, Digikey, Newark, etc) without success. What I'm ...
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0 votes
3 answers
3k views

Metcal but no temperature control?

I am looking to upgrade my iron for SMT components and recon it's probably worth skipping the middle ground and getting myself a Metcal (as almost everyone I have asked has mentioned that they are ...
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2 votes
1 answer
155 views

Do any distributors pack in bags of 10 or so?

I want to buy components from places like Farnell, Mouser, etc. But I then want to distribute them in kits, each kit would have maybe 10 of each component; the components are tiny 0603 types. The ...
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