Citizen scientist
On Nov 29th, 2019 (Applied Science) uploaded a video called DIY mass spectrometer measures potassium in dietary salt substitute^a880 where he built a mass spectrometer based on the American Association of Physics Teachers article Poor Man's Mass Spectrometer (1967)^34d2 by: John W. Dewdney. This topic–like many of the projects on Applied Science–is something I have…
Read more “Poor [wo]man’s mass spectrometer” (Resources – 2020) [WIP]
Stiff rubber types of test-tube stoppers (of high chemical resistance) are made of M35 Green Neoprene1 and are known by the trade name “Plasticoid” The “hollow”, translucent, pliable, thin plastic type of test-tube stoppers are made of Polyethylene2 or Low-Density Polyethylene3, the latter being known by the trade name “Dynalon” The “vent”/”cap”, clear, hard, brittle,…
Dsplay Kexts kextstat | grep -v apple # all non-apple kexts kextstat | grep FTDI Result: 171 0 0xffffff7f83efe000 0x8000 0x8000 com.FTDI.driver.FTDIUSBSerialDriver (2.2.18) 638ECCC3-375D-CD1A-C2EC-0DC14740FC9C <137 52 5 4 3 1> https://superuser.com/questions/1135730/how-to-release-reset-serial-port-ftdi-devices-mac-osx#comment1649421_1136084 Un/Reload FTDI Kext sudo kextunload -b com.FTDI.driver.FTDIUSBSerialDriver sudo kextload -b com.FTDI.driver.FTDIUSBSerialDriver Result from kextunload: kernel) Can’t unload kext com.FTDI.driver.FTDIUSBSerialDriver; classes have instances: (kernel) Kext…
Read more OSX FTDI/USB Serial adapter only creates new /dev/cu.* for each USB port/reboot
The need for this testing setup arose while I was playing with making semiconductors from scratch. Specifically simple diodes from complete scratch. One being Cuprous Oxide, with interest in Aluminum Oxide as well. While poking around with a graphite lead on the Copper Oxide layer, it quickly dawned on me that there was no really…
Read more I-V Curve Characteristics of Semiconductors on the cheap (Mostly…) *WIP*
This research is in the document and information gathering stage The patent we are looking at: (English/UK) Patent Number 329, 1858 February 20th “Thomson’s Improvements in Testing and Working Electric Telegraphs” Physical copy: http://special.lib.gla.ac.uk/manuscripts/search/detail_c.cfm?ID=94776 Best online source so far: “English Patents of Inventions, Specifications, 1858, 317 – 399” Page 62 (in the PDF) https://books.google.ca/books?id=uOJg2EbSJ5EC&lpg=RA38-PA1&ots=Btc_iV27DI&dq=English%20Patents%20of%20Inventions%2C%20Specifications%2C%201858%2C%20317%20-%20399&pg=RA5-PA1#v=onepage&q&f=false Mention…
Q: What makes up a K-Type Thermocouple? A: Al-Cr, Alumel and Chromel 1 Q: What is Alumel? A: Alumel is an alloy of 95% nickel, 2% aluminum, 2% manganese, and 1% silicon Q: What is the process of alloying Alumel? A: Research ongoing Q: What is Chromel? A: Chromel is an alloy of 90% nickel,…
We take an foot-pedal powered organ that is over a century old, and fit it with Neopixels and switches under the keys to create a delightful interactive experience.
Of interest on this gauge are Relays that flip when the vacuum hits a Set Point, as well as a Chart Recorder port. TODO: Put code on GitHub, post here. The Set Point Relay Rated for 250Vac @ 3A 1 There are two relays, one for each Gauge you can connect to this AGD. Each…
Read more Interfacing with an old Edwards Vacuum Gauge (AGD) *WIP*
After friends became excited about the existence of Core Rope Memory as proposed by NASA for the Apollo Guidance Computer, I decided to build a proof of concept. The concept in this case was building the memory as a literal, flexible rope. The actual implementations were normally made into a rigid assembly with the cores…
My own experiments and trials at making my own diodes using Cuprous Oxide. Links https://hackaday.com/2016/05/01/home-made-diodes-from-copper-oxide/ http://halestrom.net/darksleep/blog/011_copper_diodes/ https://hackaday.com/2010/03/05/diy-diodes/ https://en.wikipedia.org/wiki/Copper(I)_oxide#Semiconducting_properties