Design & Development Portfolio
2021-10-02---Sat---03:24

Assad Ebrahim, M.Sc.
Director by day, Experimenter/Hacker by night

Website: http://mathscitech.org/articles/
LinkedIn: https://www.linkedin.com/in/assadebrahim/
Hackaday.io: https://hackaday.io/AssadEbrahim
Twitter: https://twitter.com/assadontech


TinyPhoto Rotating Photobook  (July 2021)
TinyPhoto - an ATtiny85 powered embedded graphics photobook on 3V coin battery (20h play) built from 12 through-hole parts, £5, on 3x7cm PCB.  Custom graphics driver (200 bytes), code 1.3kB RAM.  
http://mathscitech.org/articles/tinyphoto

13-key Purely Analog Musical Piano  (Feb 2019)
13-key analog piano using a chain of 13 individually tunable astable multivibrator circuits with outputs connected to audio amplifier (LM386) and 8-ohm, 0.2W, 2" speaker, 9VDC battery.
http://mathscitech.org/articles/building-music-synthesizer

RFID Proximity Sensor (June 2019)
8-foot perimeter proximity sensor driven by Arduino Nano interfaced with an RFID tag reader (ThingMagic) and a high-gain RFID antenna, interfaced with strobe and 100dB alarm.  
http://mathscitech.org/articles/microcontrollers-nano

Turtle Logo in Forth  (1000 lines of code)  (Nov 2016)
Full-featured Turtle Logo drawing program accessible to 4yo children written in 1000 lines of Forth (Windows)..  Drive turtle using 3 keys, leaving a virtual ink trail.  Algorithmic thinking.
http://mathscitech.org/articles/turtle-logo-forth

3-Instruction Forth for Arduino (June 2020)
Contact me for details.  This is a work in progress.  It is what I have built to enable rapid prototyping/development of embedded/microcontroller applications.
http://www.mathscitech.org/articles