rtestardi's GitHub Pages sites

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Calchemy Units Calculator -- Calchemy™ -- Math Magic

Dimensional Analysis 101 -- an introduction to dimensional analysis for students and engineers

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Flea-Scope™ User's Guide -- Flea-Scope™ -- a low-cost and easy-to-use 18 Msps USB oscilloscope and logic analyzer

flea-scope.html -- Flea-Scope™ Graphical User Interface! (manual WebUSB vs. Web Serial)
stickos-basic.html -- Flea-Scope™ StickOS® BASIC Deep Dive User Interface! (manual WebUSB vs. Web Serial)
video introduction -- very rough preliminary video introduction to Flea-Scope™
build instructions -- full build instructions, gerbers, firmware, etc., for Flea-Scope™ on instructables.com

schools.pdf -- Flea-Scope™ for Education (1-pager)
simon.pdf -- Build a Simple-Simon Game using Flea-Scope™
toaster.pdf -- Build a Simple Toaster Oven Temperature Profile Controller using Flea-Scope™

2nd place contest entry winner -- from the Pcbway "6th Project Design Contest"
2nd place contest entry winner -- from the Instructables "First Time Author Contest"

| Buy Flea-Scope™ for $18 at Elecrow here | Submit Flea-Scope™ questions or bugs here |

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Mosquito-Scope™ (or Squito-Scope™)

I am gathering requirements for the next version of Flea-Scope now, including multiple input amplification ranges (for measuring sub-millivolt signals), a USB-C connector, GUI support for multiple channels in one web-page, 0.8" PCB width (down from 1.0"), etc.

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StickOS Website -- StickOS® BASIC -- an entirely MCU-resident patented interactive programming environment

quickref.v1.90.pdf -- StickOS® BASIC Quick Reference Guide (v1.90)
stickos.v1.90.pdf -- StickOS® BASIC User's Guide (v1.90)

2nd place contest entry winner video -- from the Freescale "Can Your Badge Do This?" contest

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Pictures:

• Bicycle Trip, 2022
• Campering, 2021
• Gold Hill Inn, 2020
• Garden, 2020
• Disney World, 2019
• Old Pictures

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Files:

• dream.pdf -- Campion Academy career fair document: Flea-Scope™, from dream to reality!
• gadget.pdf -- Building a WebUSB or Web Serial Gadget
• math.pdf -- Permutations and Combinations and Probabily Algebra-II sub notes
• mfe.pdf -- Microcontrollers For Everyone! (Lowering the barrier to entry to useful microcontroller development)
• pcba.pdf -- Flea-Scope™ Parts, Assembly, and Test
• pcbafd.pdf -- PCBA for Dummies (getting over your fear of online printed circuit board assembly!)
• vantage.pdf -- When your outdoor lamp with non-replaceable LEDs fails after a couple of years...

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