Electronics from first principles — voltage, current, resistance, and circuit design explained clearly. Real components, real numbers, no prior knowledge assumed.https://electronics.bradpenney.io/ Brad Penneyen Sun, 12 Jul 2026 19:55:01 -0000 Sun, 12 Jul 2026 19:55:01 -0000 1440 MkDocs RSS plugin - v1.19.0 https://electronics.bradpenney.io/images/exploring_electronics.png https://electronics.bradpenney.io/ An Arduino is a tiny dedicated computer on a board. Learn what's actually on it, and how to read your first lines of Arduino code line by line. https://electronics.bradpenney.io/what_is_an_arduino/ Fri, 03 Jul 2026 09:30:00 -0300 Exploring Electronicshttps://electronics.bradpenney.io/what_is_an_arduino/ A resistor has no printed numbers — just colored stripes. Learn what each band means and how to decode any resistor's value and tolerance on sight. https://electronics.bradpenney.io/resistor_color_codes/ Fri, 03 Jul 2026 09:00:00 -0300 Exploring Electronicshttps://electronics.bradpenney.io/resistor_color_codes/ Wire a single-LED circuit on a breadboard and flash the Blink sketch to an Arduino — your first complete loop from wiring to running code on real hardware. https://electronics.bradpenney.io/blink_an_led/ Sun, 28 Jun 2026 17:30:00 -0300 Exploring Electronicshttps://electronics.bradpenney.io/blink_an_led/ An unconnected input pin floats and reads noise. How pull-up and pull-down resistors give it a steady HIGH or LOW, which to choose, and how to size one. https://electronics.bradpenney.io/pull_resistors/ Sun, 28 Jun 2026 16:30:00 -0300 Exploring Electronicshttps://electronics.bradpenney.io/pull_resistors/ A digital pin is either on or off — nothing in between. Learn how a microcontroller drives an LED and reads a button, and why each pin needs a resistor. https://electronics.bradpenney.io/digital_io/ Sun, 28 Jun 2026 15:30:00 -0300 Exploring Electronicshttps://electronics.bradpenney.io/digital_io/ Compile and upload Arduino sketches from the terminal with arduino-cli — one command, no IDE. Install it, find your board, and flash code from your own editor. https://electronics.bradpenney.io/tools/arduino_cli/ Sun, 28 Jun 2026 14:30:00 -0300 Exploring Electronicshttps://electronics.bradpenney.io/tools/arduino_cli/ Learn to read electronics schematics: the standard symbols for resistors, capacitors, LEDs, and transistors, and how to trace current through any circuit. https://electronics.bradpenney.io/reading_schematics/ Tue, 23 Jun 2026 10:30:00 -0300 Exploring Electronicshttps://electronics.bradpenney.io/reading_schematics/ Two wiring patterns govern every circuit ever built. Learn how series and parallel circuits work — why voltage divides in one and stays constant in the other. https://electronics.bradpenney.io/series_and_parallel/ Tue, 02 Jun 2026 21:56:00 -0300 Exploring Electronicshttps://electronics.bradpenney.io/series_and_parallel/ How breadboard holes connect internally, how to use the power rails, and the wiring mistakes that kill every beginner's first circuit before it even starts. https://electronics.bradpenney.io/tools/breadboards/ Mon, 25 May 2026 21:19:00 -0300 Exploring Electronicshttps://electronics.bradpenney.io/tools/breadboards/ The label on your USB charger says 5V ⎓ 2A. Two numbers that explain how electricity works — voltage, current, resistance, and Ohm's Law explained clearly. https://electronics.bradpenney.io/what_is_electricity/ Fri, 15 May 2026 22:43:00 -0300 Exploring Electronicshttps://electronics.bradpenney.io/what_is_electricity/ Electronics from first principles — voltage, current, resistance, and circuit design explained clearly. Real components, real numbers, no prior knowledge assumed. https://electronics.bradpenney.io/ Sun, 10 May 2026 21:41:00 -0300 Exploring Electronicshttps://electronics.bradpenney.io/