https://electwork.net/en/tags/pwm/ Recent content in PWM 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 Thu, 22 Jan 2026 00:00:00 +0900 https://electwork.net/en/posts/arduino-software-pwm-wave/ Thu, 22 Jan 2026 00:00:00 +0900 https://electwork.net/en/posts/arduino-software-pwm-wave/ Implementing Software PWM on the Arduino UNO R4: give every digital pin — not just the six hardware PWM pins — smooth brightness control. Covers gamma correction, wave phase math, and flicker-free 3.9 kHz PWM. 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/arduino-adc-serial/ Sun, 12 Jul 2020 00:00:00 +0900 https://electwork.net/en/posts/arduino-adc-serial/ Analog-to-digital conversion on Arduino explained: 10-bit resolution (4.88 mV/step) vs the R4's 14-bit mode (0.305 mV/step), the ADC-to-volts formula, and how a SAR ADC works. Sample code for R3 and R4. https://electwork.net/en/posts/arduino-buzzer-sound/ Sat, 27 Jun 2020 00:00:00 +0900 https://electwork.net/en/posts/arduino-buzzer-sound/ Hands-on Arduino tone() guide: wire a passive piezo buzzer and play real notes from a three-octave table. Full sketch, the active vs passive test, and no-sound fixes. Works on UNO R3 and R4.