Saturday, November 25, 2017

Glass engineering - designing and making photochromic glass



How to make small batches of specialty glass with minimal equipment.

Good overview glass engineering book from 1920 (how to choose ingredients) : http://www.wallace-venable.name/Glass/bastow_American_Glass_Practice.pdf


"5mW" *nudge-wink*   405nm laser pointer: https://www.ebay.com/itm/5MW-405nm-High-Powerful-Blue-Voilet-Purple-Laser-Pointer-Pen-Lazer-Beam-Light/381987406125

Alumina melting dish on eBay: https://www.ebay.com/itm/Crucibles-Melting-Dishes-Ceramic-4-Size-Casting-Torch-Melt-Jewelry-Gold-Silver/291595276663

Source of kiln paper, mold release, molds, glass fusing supplies: https://www.delphiglass.com/

Paragon Quickfire kiln:  https://www.sheffield-pottery.com/PARAGON-QUIKFIRE-6-KILN-p/pqf6.htm

Case of 12 insulating fire bricks:  https://www.ebay.com/itm/IFB-Thermal-Ceramics-K26-2-5-12-pk/130342021835

Graphite mold:  https://www.ebay.com/itm/5-in-1-Gold-Melting-Graphite-Ingot-Casting-Refining-Scrap-Bar-Coin-Combo-Mold/321838368964

Relevant patents for photochromic recipes:  https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US2515936.pdf

https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US3548060.pdf

https://patentimages.storage.googleapis.com/b1/76/10/d4bd570c1a161c/US4374931.pdf

https://patentimages.storage.googleapis.com/26/71/a3/481dc009490fe6/US2515275.pdf

https://patentimages.storage.googleapis.com/a1/cf/ef/a11d9037375914/US2684911.pdf

https://patentimages.storage.googleapis.com/0c/b0/d2/d53ec9e6fd478a/US3548060.pdf

https://patentimages.storage.googleapis.com/3d/31/3b/0b3bc6c18b7ef3/US3419370.pdf



Applied Science on Patreon:  https://www.patreon.com/AppliedScience

Sunday, October 29, 2017

Fast partial refresh on 4.2" E-paper display from Waveshare / Good Display



Google Drive link with Arduino firmware used in this project: https://drive.google.com/open?id=0B4YXWiqYWB99UmRYQi1qdXJIVFk



I bought the Waveshare devices on Aliexpress: https://www.aliexpress.com/item/400x300-4-2inch-E-Ink-display-module-SPI-Without-backlight-Compatible-with-variuous-board-Ultra-low/32827172081.html


Datasheet with the 42-byte LUT format used in the 4.2" display, but not the exact correct part.
https://www.smart-prototyping.com/image/data/9_Modules/EinkDisplay/GDEW0154T8/IL0373.pdf


Interesting thread with other folks experimenting with LUTs on the 2.7" display.
https://github.com/olikraus/u8g2/issues/318


Waveshare (distributor) datasheet
https://www.waveshare.com/w/upload/6/6a/4.2inch-e-paper-specification.pdf



Good Display (manufacturer) datasheet
http://www.good-display.com/products_detail/productId=321.html

Waveform "theory" with class 7-5-7 pulse sequence:
http://www.multicomponent.se/sub_group_files/13dae3f428be3929dc13fed1f79c5e40.pdf

My favorite microcontroller dev board, the Teensy: https://www.pjrc.com/teensy/

The new awesome 5-series oscilloscope from Tek: https://www.tek.com/oscilloscope/5-series-mso-mixed-signal-oscilloscope


Saturday, July 1, 2017

World's smallest lightbulb flasher? Flashing Light Prize 2017




I built an extremely small lightbulb flasher and describe the design process and challenges. This video is free for Patreon subscribers, and if I win the contest prize, I will donate the winnings to a STEM education charity.

2017 Flashing Light Prize: https://www.flashinglightprize.com/

Source of micro light bulbs: http://cir-kitconcepts.com/shop/

Single Schmitt inverter: https://www.digikey.com/product-detai...

The SR416 cell is the smallest primary power source available: http://www.watchbatteries-usa.com/siz...

Spot Welder: https://www.powerstream.com/spot-weld...

Big thanks to Tektronix for very useful test gear. Much appreciated!

Applied Science on Patreon: https://www.patreon.com/AppliedScience

Monday, May 29, 2017

Waterjet cutter built with a cheap pressure washer



Building an abrasive waterjet cutter with a $150 pressure washer.

Water orifice, mixing tube (nozzle), cutting head, high pressure fittings, valve: https://www.accustream.com/

80 grit garnet abrasive - ebay
eg http://www.ebay.com/itm/40-LBS-Garnet-80-grit-coarse-med-sand-blasting-abrasive-Fast-Cutting-Media-/272599344178

Sun Joe pressure washer: https://www.amazon.com/Joe-SPX3000-Pressure-14-5-Amp-Electric/dp/B00CPGMUXW

Pressure gauge - https://www.mcmaster.com/#4053K15

Good waterjet background and design info: https://wardjet.com/waterjet/university/nozzle-orifice

Good selection of higher-end pressure washers: https://www.pressurewashersdirect.com/

Wikipedia waterjet cutter (diagram image source): https://en.wikipedia.org/wiki/Water_jet_cutter


Support more Applied Science videos: https://www.patreon.com/AppliedScience

Thursday, March 23, 2017

T-shirts available now

Hello!  I have re-launched the Applied Science T-shirt campaign on Teepspring.  It will end in just a few days, but will re-launch after that, and be active for at least two weeks.  These shirts are being sold at-cost -- thanks so much for your support!

https://teespring.com/AppliedScience_youtube