https://electwork.net/en/tags/electronics-for-beginners/ Recent content in Electronics for Beginners on Electronics Lifehack! https://electwork.net/images/ogp-default.jpg?v=3 https://electwork.net/images/ogp-default.jpg?v=3 Hugo -- gohugo.io en Mon, 20 Jul 2026 00:00:00 +0900 https://electwork.net/en/posts/i2c-spi-uart-comparison/ Mon, 20 Jul 2026 00:00:00 +0900 https://electwork.net/en/posts/i2c-spi-uart-comparison/ How I2C, SPI and UART differ, compared by signal count, speed, multi-device support and wiring distance. Covers pull-up sizing, SPI modes 0-3 and baud rate, with a decision flow for Arduino, ESP32 and STM32. https://electwork.net/en/posts/arduino-rgb-led-control/ Mon, 13 Jul 2020 00:00:00 +0900 https://electwork.net/en/posts/arduino-rgb-led-control/ Control a common-cathode RGB LED with Arduino PWM: 8-color digitalWrite() basics, per-channel resistor calculation, and smooth 16,777,216-color gradients using sin() phase control. Includes R4 12-bit PWM. https://electwork.net/en/posts/led-ohms-law/ Mon, 15 Jun 2020 00:00:00 +0900 https://electwork.net/en/posts/led-ohms-law/ A beginner's guide to lighting LEDs with Arduino: apply Ohm's Law to pick the right current-limiting resistor, wire a breadboard circuit step by step, and troubleshoot common issues. Covers polarity and Vf.