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home:random4 [2020/09/07 17:57]
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home:random4 [2020/11/14 22:51] (current)
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-===== Under cabinet LED Lighting =====+===== Sub-Penny Pricing Stocks ===== 
 +Really interesting article and discussion on why the SEC should or should not have banned sub-penny pricing. Still don't quite get the limit order perspective.  
 + 
 +https://marginalrevolution.com/marginalrevolution/2012/05/should-stocks-trade-in-0001-increments.html 
 + 
 + 
 +===== Polishing ===== 
 +Particularly plastic and headlights. Wet sanding with even 7000 grit sandpaper isn't enough for a glossy finish, says 3m. 
 + 
 +{{youtube>Qb8XF4RLbhE?medium}} 
 + 
 +Going to try some blue polishing compound from Harbor Freight. 
 + 
 + 
 + 
 +===== Is Profit Bad? ===== 
 +<blockquote>Definition 1: Profit ultimately represents the amount that a customer knowingly provides a company for the value they have received above that company’s costs. 
 + 
 +Definition 2: Profit ultimately represents the amount that a company receives above its cost structure to the disadvantage of its customers without their knowledge. 
 +https://www.greatgame.com/blog/profit-has-become-a-bad-word 
 +</blockquote> 
 + 
 + 
 +There are lots of expenses that go into keeping a business running. Salaries (even for the owner), building maintenance, supplies, saving for a rainy day, etc. 
 + 
 +However, after all of that, assuming a business knows their exact costs should they try to maximize their profit? 
 +Pros: 
 +  * If capital is required for a large capital expense, the loaners want  
 + 
 +Cons: 
 +  * Seems wrong? Seems like  
 + 
 +Newman's Own, social enterprise, non-profit all operate this way.  
 + 
 +===== RTL-SDL ===== 
 +It's here somewhere. USB frequency spectrum analyzer. Would like to try it out and see if the led strips and stuff emit any FCC-annoying radiation.  https://transition.fcc.gov/Bureaus/Engineering_Technology/Documents/bulletins/oet63/oet63rev.pdf 
 + 
 +I think since the helmet project is exclusively on a vehicle, we're ok. However, should still look into it so it's not annoying. 
 +  * (a) A digital device utilized exclusively in any transportation vehicle including motor vehicles and aircraft.  
 + 
 +More information from Sparkfun: https://www.sparkfun.com/tutorials/398 
 + 
 + 
 + 
 +===== Under cabinet LED Lighting Strip =====
 One option is fluorescent lighting, similar to shop light. About same price? but harder to replace bulbs / sections of bulb. One option is fluorescent lighting, similar to shop light. About same price? but harder to replace bulbs / sections of bulb.
 +  * https://www.amazon.com/Cabinet-Lighting-Wardrobe-Workbench-Black-Warm/dp/B07JQCVX49?ref_=ast_sto_dp
 +  * EShine dimmable under cabinet lighting. https://www.amazon.com/dp/B01N17XM7S/ref=twister_B07C11DNWR?_encoding=UTF8&th=1
 +  * Home Depot has cheap ($20 for 2 foot) 4000K full strip options: https://www.homedepot.com/p/Commercial-Electric-Plug-In-or-Direct-Wire-Power-Connection-2-ft-White-4000K-Integrated-LED-Strip-Light-with-power-cord-and-linking-cord-54263141/206028921?MERCH=REC-_-pipsem-_-307741738-_-206028921-_-N
 +    * Also have tunable 3000-5000K strips for only a little bit more ($25 for 2 foot). Free store delivery too. https://www.homedepot.com/p/Commercial-Electric-4-ft-32-Watt-Equivalent-Integrated-LED-White-Strip-Light-Linkable-Plug-in-Direct-Wire-1800-Lumens-Multi-Color-Changing-54261211/307741739, https://www.homedepot.com/p/Commercial-Electric-2-ft-17-Watt-Equivalent-Integrated-LED-White-Strip-Light-Linkable-Plug-in-Direct-Wire-900-Lumens-3-Color-Temp-Options-54263211/307741738
  
 ==== Custom ==== ==== Custom ====
-Just buy an LED strip and in line outlet switches. Amazon List: https://www.amazon.com/hz/wishlist/ls/35VGZOBUJ7HK1?ref_=wl_share, or PDF: {{ :home:led_lighting.pdf |}}+Just buy an LED strip and in line outlet switches. Amazon List PDF: {{ :home:led_lighting.pdf |}} 
 +  * Did **NOT** like drilling extra holes for the 90 degree power supply connector, and I don't think the 90 degree on the wall side is necessary either. So use the cables that come along with the power supply, otherwise if white is needed buy the same kind. 
 +    * If desired to mount power supply in cabinet, can drill an easy fast hole with a 1/2" forstner bit that M&D have. 
 +  * Need to do strain relief so that you can solder right side up and then flip it under the cabinet a lot easier without breaking stuff. {{youtube>rCZrGZirRkg?medium}} 
 +  * Give like 3 feet of extra wire so you can do this soldering on the countertop and do any twisting needed. Tape behind the mounted strip 
 +  * Ok to glue, but it'll just soften again when you don't want it to. Pre-solder the wire and the strip, then push them together with needlenose pliers. Then do full glue when done and confirmed electrically working. 
 +    * Also glue wires for electrical connection to flexible pcb (probably just surround the entire solder connection) for more strain relief. 
 + 
 + 
 +===== CNC ===== 
 +==== Helmet encasing mold ==== 
 +=== Pros === 
 +  * Precision box allows for aligning board much easier 
 +  * Very easy and cheap to prototype on a final product (made in metal or injection molded) quickly. Minimum cost for PDX CNC is $500.
  
  
-===== Upright CNC Machine =====+==== Maslow ==== 
 +Upright full 4X8 machine.
 Pretty cool, and cheap. https://makermade.com/product/maslow-cnc-ready-to-ship/ Pretty cool, and cheap. https://makermade.com/product/maslow-cnc-ready-to-ship/
  
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 Selling stuff on Craiglist. Mowing lawn. Selling stuff on Craiglist. Mowing lawn.
  
- 
-===== Fusion 360 notes ===== 
-"Thicken" is how you make stuff thicker. 
- 
-Not sure why I lost my helmet part. 
  
  
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   * **Axial elongation**: https://endmyopia.org/glasses-make-your-eyes-grow-not-in-a-good-way/   * **Axial elongation**: https://endmyopia.org/glasses-make-your-eyes-grow-not-in-a-good-way/
   * If reading glasses might help with myopia.   * If reading glasses might help with myopia.
 +
 +==== VSP Out of Network Reimbursement ====
 +https://www.vsp.com/claims/submit-oon-claim. Results are here: https://www.vsp.com/benefits/my-benefits?tab=benefitHistory
 +
 +$130 for elective contacts every year. 
 +
 +Something else for glasses.
  
 ==== Glasses ==== ==== Glasses ====
home/random4.1599526677.txt.gz · Last modified: 2020/09/07 17:57 by admin