Electronics > Projects, Designs, and Technical Stuff
Borderlands style jewelry box research thread
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Youkai:
HAHA! Well if this one works out maybe you can commission one lol :P Whenever I finish it I'll post videos.

EDIT: Actually that chest would probably be easier than what I'm trying to do; especially if you don't need lights added. 2 Servo's would do it. Just put the shelf on an arm that you rotate up after the lid opens. Actually if you worked out the mechanism you could maybe do it with one servo. If it's going to be in a pinball machine it's probably going to be small and you probably don't care how hollow/thick it is. So one small servo could probably work both the lid and the drawer with the right setup.
Ian.M:
Sorry I didn't have time and enough patience to check your parts list.

When you document this project, *PLEASE* do it in a format other than long video (although you may choose to make one of those anyway if you are a regular vBlogger). Its *MUCH* easier to skim a PDF or web page for the interesting bits than it is to get an overview of a long video.
Youkai:

--- Quote from: Ian.M on October 08, 2018, 07:40:30 am ---Sorry I didn't have time and enough patience to check your parts list.

--- End quote ---
No worries. I think it is correct. Just wanted a second eye to make sure I didn't somehow pick the wrong value for the schottky's or something.


--- Quote from: Ian.M on October 08, 2018, 07:40:30 am ---Its *MUCH* easier to skim a PDF or web page for the interesting bits than it is to get an overview of a long video.

--- End quote ---
Interesting. I hadn't ever really thought of that. I haven't been documenting this project at all so far, other than this thread I guess, so I was just going to have a short youtube video where I show it actually working; and maybe show the electronics bits once I get them all wired up before I actually insert them into the shell. I'll definitely keep in mind the PDF idea. Do you have a link to a PDF someone else has made so I can get an idea of how people organize those?
Youkai:
Ok took a fair bit of time off of this project but I'm gonna try to get a little more work done on it. Couple things I want to make sure I'm clear on. Please correct me if any of the following are mistaken statements:


* The bulb of the resistor is not conductive: i.e. if two resistor bulbs are touching they will not complete a circuit
* Diodes are directional and I want to have the marked end of my diodes (cathode) on the higher voltage wire for the NeoPixel protection (https://www.mouser.com/ProductDetail/Vishay-Semiconductors/BAT43-TAP?qs=sGAEpiMZZMtQ8nqTKtFS%2fCT6%2f0RNrmfHlPqgqRLTrGU%3d)
* Capacitors are not directional
If these are all correct and someone could confirm that it would be appreciated. Thank you.
Ian.M:
Ordinary through hole resistor bodies are covered by non-conductive paint, however its bad practice to let them touch as there may be flaws in the paint, and especially on the metal endcaps, (dogbone outline bodies), that risks a short-circuit.

Electrolytic capacitors are polarised - the stripe indicates the negative lead.   Tantalum bead capacitors are polarised, the stripe indicates the positive lead.  Tantalums are best avoided because they have a nasty habit of catching fire if even slightly abused.  All other common capacitors are non-polarised.

For diodes the end with a ring-stripe round it is the cathode, and is the direction the arrow points in their schematic symbol and the direction they permit (conventional) current flow in.   Their orientation will depend on whether they are supposed to pass or block current in normal operation - see schematic of the specific circuit you are using them in.
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