https://pi-ada-tutorial.sourceforge.io/categories/pwm/ Recent content in Pwm on Pi Ada Tutorial Hugo en-gb krischik@users.sourceforge.net (Martin Krischik) krischik@users.sourceforge.net (Martin Krischik) Thu, 21 May 2026 20:30:06 +0200 https://pi-ada-tutorial.sourceforge.io/pico_ada_c07_buzz_and_blink/ Thu, 21 May 2026 20:30:06 +0200krischik@users.sourceforge.net (Martin Krischik) https://pi-ada-tutorial.sourceforge.io/pico_ada_c07_buzz_and_blink/ I wasn’t happy with the original Chapter 7 siren, so I gave it the full treatment: a wailing PWM siren plus rotating NeoPixel police lights — all running cleanly across both cores using the Jorvik profile. https://pi-ada-tutorial.sourceforge.io/pico_ada_c07_buzzer/ Mon, 18 May 2026 18:42:02 +0200krischik@users.sourceforge.net (Martin Krischik) https://pi-ada-tutorial.sourceforge.io/pico_ada_c07_buzzer/ In this chapter we connect both active and passive buzzers to the Pico. We start with a simple button-controlled doorbell, improve the passive buzzer with bit-banging, and finally create a clean sweeping alert tone using the Pico’s PWM hardware. We also look at inductive-load protection and why a diode is essential.