LEAP: Little Electronic and Arduino Projects

About the Tecsun PL-660 portable FM/MW/LW/SW/SSB/AIR band receiver.

Testing the PLJ-1601-C 0.1MHz-1.2GHz Frequency counter

About the STM32U385RG development board, installing STM32CubeIDE on macOS, and making a simple LED blinky demo from scratch.

Testing various 3D printed bases and cases for the STM32 Nucleo-64 development board with STM32U385RG.

About the ICL7660 CMOS Voltage Converter, and testing its use to convert a +5V supply to a ±5V supply.

Installing rust on a Raspberry Pi and using it for GPIO programming, also test cross-compilation from macOS to Raspberry Pi.

How to configure Raspberry Pi OS for headless operation, including static IP and mDNS

Using a zener diode as a voltage dropper/shifter

Testing various printed bases and cases for the classic Arduino Uno.

Building a low current reference switchable between 100μA, 200μA, 300μA and 400μA, based on a design from Louis Scully / Scullcom Hobby Electronics using the REF200 current reference and a laser-cut MDF project case.

Testing the REF200 as a 50µA current source.

Unpacking and doing some basic tests with the NanoVNA, including using the NanoVNASaver software on macOS.

Presenting a missing pulse detector circuit based on a 555 timer monostable, and tested using a 555/4011 interruptible pulse generator.

Reviewing the main methods for reading switch inputs with an Arduino.

Book notes: Power-Switching Converters, by Simon S.

Designing and testing a circuit to drive and switch an output between 3 voltage levels (0v, VCC, 2.4xVCC) from a single GPIO pin.

Testing the basic MOSFET push-pull output driver, similar to designs used in digital logic output or GPIO circuits.

Book notes: C Programming on Raspberry Pi, by Dogan Ibrahim.

Book notes: Encyclopedia of Electronic Circuits, volumes 1-7, by Rudolf F.

Book notes: Timer, Op Amp, and Optoelectronic Circuits & Projects, by Forrest M.

Book notes: The 555 Timer Applications Sourcebook, by Howard M.

Book notes: The Book of 555 Timer Projects, by Dogan Ibrahim.

Book notes: Raspberry Pi Electronics Projects for the Evil Genius, by Donald Norris.

Book notes: MicroPython Cookbook: Over 110 practical recipes for programming embedded systems and microcontrollers with Python, by Marwan Alsabbagh.

Book notes: Active Filter Cookbook, by Don Lancaster.

Book notes: TTL Cookbook, by Donald E.

A quick test and review of a range of 5mm flashing LEDs: red , slow RGB, fast RGB.

A quick test and review of 5mm candle LEDs, that include a built-in candle flicker emulation.

A quick investigation of some decorative flashing LEDs that were scattered around a restaurant feed presentation(!)

A simple slowly-glowing LED effect using a 555 timer.

Examining the KWS-MX17 inline USB multi-function tester

A demo of the HT12D decoder and HT12E encoder ICs used with an LPD433 module to broadcast 4 bits of data to an 8-bit address on the 433 MHz UHF/70-centimeter band.

A roundup of readily available LPD433 modules, low power devices operating on the 433 MHz UHF/70-centimeter band.

Book notes: Solid State Design for the Radio Amateur, by Wes Hayward.

Book notes: ARRL's PIC Programming for Beginners, by Mark Spencer.

Book notes: Easy Pic'N: A Beginners Guide to Using Pic16/17 Microcontrollers from Square 1, by David Benson.

Book notes: ARRL's VHF Digital Handbook, by Steven R.

Book notes: Basic Antennas – Understanding Practical Antennas and Designs, by ARRL Inc.

Book notes: The ARRL Extra Class License Manual, by American Radio Relay League.

Book notes: The ARRL General Class License Manual, by American Radio Relay League.

Book notes: The ARRL Ham Radio License Manual, by American Radio Relay League, Third Edition.

Book notes: Microcontroller Based Radio Telemetry Projects, by Dogan Ibrahim.

Book notes: ARM Microcontroller Projects, by Dogan Ibrahim.

Book notes: ARRL's Low Power Communications: The Art and Science of QRP, by Richard H Arland.

Exploring the LM336 precision reference and testing the minimum temperature coefficient circuit design.

Finally, 3D PLA printing a case for the Raspberry Pi Model B+ ... at the library.

Book notes: Electronic Principles, by Albert Malvino, David J Bates, Patrick E Hoppe.

Book notes: Digital Logic and Computer Design, by M.

Book notes: Raspberry Pi Cookbook, by Simon Monk.

Book notes: PIC Microcontroller Projects in C: Basic to Advanced, by Dogan Ibrahim.