Electronics > Beginners
Filling up my "candy" jar with jellybeans, what to choose?
rstofer:
--- Quote from: FriedMule on September 07, 2019, 07:56:42 am ---
--- Quote from: RoGeorge on September 07, 2019, 07:23:57 am ---Order only what you need, and only when you need it.
No matter how wide a personal stock inventory is, there will be something missing and needed to be order to finish a project. Don't be a parts hoarder like me. ;D
--- End quote ---
LOL thanks:-)
In a way are you right but there are some components that you buy over and over again, and why not know them from the start?.
--- End quote ---
Because you don't buy them over and over. You buy them in multiples of 100 (or 10 or whatever) and now you have a stock of something that is actually useful.
Or you can buy kits:
https://www.jameco.com/z/TRANSISTOR-KIT-560-Piece-Transistor-Component-Kit_82595.html
https://www.jameco.com/z/00081832-540-Piece-1-4-Watt-5-Carbon-Film-Resistor-Component-Kit_81832.html
https://www.jameco.com/z/81867-240-Piece-Radial-Capacitor-Component-Kit_81867.html
https://www.jameco.com/z/MONOLITHIC-KIT-280-Piece-Monolithic-Capacitor-Component-Kit_171475.html
https://www.jameco.com/z/00081883-280-Piece-Mylar-Capacitor-Component-Kit_81883.html
https://www.jameco.com/z/00081841-150-Piece-Tantalum-Capacitor-Component-Kit_81841.html
https://www.jameco.com/z/81859-520-PIECE-CERAMIC-DISC-CAPACITOR-COMPONENT-KIT_81859.html
These kits are expensive primarily because they come in a Component Cabinet but, really, a loose bag of stuff is useless. Then there is the fact that most projects leaving the breadboard transition to SMD.
Starting out, I would buy a huge resistor kit and ceramic capacitor kit. Those will always be useful.
add an assortment of the 2N390x transistors and that's about it. Maybe some LEDs... Everything else I would buy for a project and just buy in multiples.
Don't minimize the utility of those Component Cabinets. You will need a storage scheme.
https://brickarchitect.com/guide/bricks/large/
I have several of these cabinets in various configurations. Most of the drawers have electrostatic foam.
Come up with a better way to store SMD components.
I buy ALL of my components from DigiKey or Mouser (except for the resistor/capacitor kits from Jameco). I do NOT buy floor sweepings from Aliexpress. If I order parts on Sunday evening, I have them by Thursday from DigiKey. Sometimes even sooner.
Thinking about it, just buy the storage cabinets and fill them up as you go.
rstofer:
--- Quote from: FriedMule on September 07, 2019, 10:23:07 am ---
--- Quote from: blueskull on September 07, 2019, 08:07:28 am ---Half a dozen of these: https://www.cypress.com/documentation/development-kitsboards/cy8ckit-059-psoc-5lp-prototyping-kit-onboard-programmer-and
And an 1/8 watt through hole (or 1/16 watt 0805) resistor set.
That should keep you busy for quite a while. Those PSoC boards have 4 comparators, 4 naked OPAMPs, 4 OPAMPs with filter/PGA/TIA/naked options, 2 SAR ADCs, 1 SDM ADC, 4 DACs and 192 LE CPLD, all on one chip.
--- End quote ---
I didn't know them, but are they considered as jellybeans for building electronic?
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PSOC is a unique experience. Clearly, folks start out with an Arduino and I'm good with that just due to the volume of projects on the Internet. The Teensy 4.0 is vastly more powerful and uses the same infrastructure (at least in the beginning). It's all good. Hint: If you're thinking Arduino, think Teensy before you plunk down your money. Among other things, the Teensy 4.0 has floating point hardware and runs at 600 MHz. $20 for the Teensy versus $0.99 on eBay for the Arduino Nano. Huge price difference! But the Teensy is worth it!
The PSOC is much more interesting! You plunk down logic blocks on a schematic, do some minimal interconnect, hit the 'GO' button and most of the required code is generated by the toolchain. These are very powerful chips, the PSOC 6 has an M0 and M4 ARM core each running their own code and sharing peripherals. There's a lot of room to grow with the PSOC chips. The Arduino, even the Mega, are low end chips and seriously limited in capability compared to the more modern offerings. It all depends on what you want to do.
Electronics today is fractured into those folks playing with transistors and op amps and those playing with uCs. There's overlap, of course, but it seems to me that a lot more is being done in code and less in solder. I'm probably wrong...
Take the time to watch this series of videos: https://www.cypress.com/training/psoc-101-video-tutorial-series-how-use-arm-cortex-m0-based-psoc-4
PSOC is amazing!
rstofer:
I hadn't played with my PSOC kits in quite a while so I started over on the videos. I just finished Tutorial 3.
Tutorial 0 - Introduction
Tutorial 1 - Pin Output - the classic blinking LED
Tutorial 2 - Pin Input
Tutorial 3 - Interrupt driven input *** Most Arduino users never get to interrupt driven anything - EVER. Here we have it in tutorial 3
When an Arduino user wants to test an input, they continually read the pin in the loop() function. Dependong on the code in loop(), the button response might be quite slow. Interrupt driven code helps prevent that. Maybe it's a rotation sensor and if you miss it you lose position.
There a lot more to go but these first 3 won't take an hour. I'm using the CY8KIT042 PSoC 4 Pioneer Kit (because I have a couple).
https://www.digikey.com/product-detail/en/cypress-semiconductor-corp/CY8CKIT-042/CY8CKIT-042-ND/4047452
Yup! It's off topic but there's a lot going on under the hood for that interrupt driven input.
schmitt trigger:
You should get yourself some of the following vacuum tubes (running to take cover).............. >:D
Voltage references:
OA2
Full wave Rectifiers:
6X4, 5Y3
Triodes, single and double:
6C4, 12AX7, 12AT7
Power beam tetrodes:
6L6, 6V6
Remote cutoff pentode:
6BA6
admiralk:
--- Quote from: FriedMule on September 07, 2019, 05:07:03 am ---I am trying to begin to make a complete-ish list on what always to have in your jar
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I have yet to start a project where I did not need something, no matter how many parts I had on hand. I also usually end up buying parts that I already have just because it is too much trouble to see if it is something I already have, or not.
If you buy 2X of what you need for any project, you will very quickly fill up your candy jar and still be having to order more parts for every project.
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