Ralph S Bacon Courses

From Circuit Diagram to PCB - Part 1- Schematic, Parts, BOM EasyEDA Tutorial

2 ratings

Create a PCB-ready schematic in EasyEDA by placing through-hole components, wiring a simple circuit, and checking parts before manufacture.

• YouTube
• 27 minutes
• Self-Paced
• Free Video

Relay Comparison - Electromechanical, SSR, Latching

2 ratings

Compares electromechanical, solid-state, and true latching relays, explaining their switching behavior, protection, and power trade-offs.

• YouTube
• 29 minutes
• Self-Paced
• Free Video

E-Ink E-Paper Project With ESP32 DeepSleep

Build a battery-powered ESP32 e-paper reminder that wakes daily, updates its display, and sleeps at roughly 27 μA.

• YouTube
• 24 minutes
• Self-Paced
• Free Video

The Ultimate Switch Bounce Eliminator - Simple and Effective

Build a simple hardware circuit that eliminates switch bounce from rotary encoders and other switches before signals reach a microcontroller.

• YouTube
• 24 minutes
• Self-Paced
• Free Video

Rotary Encoder With No Switch Bounce - You Must Use This

Improved rotary encoder implementation for Arduino, featuring Marko Pinteric's method to eliminate switch bounce. Includes demos, code discussion, and insights on optical encoders.

• YouTube
• 26 minutes
• Self-Paced
• Free Video

How I Designed My Heater Controller - Warning! Mains Voltage

A practical workflow for turning an Arduino project idea into a safe, peer-reviewed heater-controller PCB.

• YouTube
• 27 minutes
• Self-Paced
• Free Video

Stop Using Serial.print in Your Arduino Code - This Is Better

Replace Arduino Serial.print debugging with conditional macros and printf-style logging to reduce code bloat and execution overhead.

• YouTube
• 27 minutes
• Self-Paced
• Free Video

ESP-NOW Simple Demo - Easy IOT Data Transfer on ESP32 or ESP8266

A hands-on ESP-NOW demo showing how ESP8266 and ESP32 boards exchange small data packets using MAC addressing and callbacks.

• YouTube
• 22 minutes
• Self-Paced
• Free Video

Arduino NRF24L01+ Simple Trigger Wireless Project with EasyEDA

Build a battery-powered Arduino trigger module that sends switch events via nRF24L01+ and turn its tested circuit into a custom PCB.

• YouTube
• 33 minutes
• Self-Paced
• Free Video

ESP32 Web Radio BBC URLs, Raspberry Pi Pico RP2040 - and More

Update BBC streaming URLs and make a minor code change to keep an ESP32 web radio player working.

• YouTube
• 25 minutes
• Self-Paced
• Free Video

Arduino Timer Interrupts - Overflow & Comparator

Use Arduino hardware timer interrupts to trigger code at regular intervals without blocking the main loop.

• YouTube
• 31 minutes
• Self-Paced
• Free Video

Using Assembler Within an Arduino Sketch - Easy to Do!

Learn how to link a simple assembly routine into an Arduino sketch, share data between them, and verify instruction timing.

• YouTube
• 28 minutes
• Self-Paced
• Free Video

Reverse Polarity Protection Using a MOSFET - For Arduinos and More

Use a P-channel MOSFET’s body diode and gate behavior to build efficient reverse-polarity protection for Arduino circuits and other equipment.

• YouTube
• 25 minutes
• Self-Paced
• Free Video

Arduino Battery Monitor - No External Components Required

Measure an Arduino’s battery voltage without external components using the ATmega328P’s internal bandgap reference and a calibrated sketch.

• YouTube
• 26 minutes
• Self-Paced
• Free Video

Arduino Auto Shutdown and Switch Off

Use a small MOSFET circuit to shut down an Arduino and its peripherals, then restart them externally or conserve power with deep sleep.

• YouTube
• 35 minutes
• Self-Paced
• Free Video