Raspberry Pi Pico Lecture 36 (2025): Power management in IoT systems

0:00 – Plan for today’s lecture
1:50 – What does power management involve?
4:10 – Polling vs. sleep/wake cycles
8:45 – Achieving a low power mode
9:10 – Looking through some datasheets
17:20 – Waking up from a low power mode
22:45 – A latching circuit
26:40 – Getting back to sleep as quickly as possible
30:15 – DMA, fixed point, and other speed optimizations
31:30 – RP2040 power control (sleep and dormant modes)
38:55 – Maximum power point tracking
42:20 – Looking for energy
47:30 – Avoiding the temptation to over engineer

Spring, 2025 lectures from ECE 4760 (Digital Systems Design Using Microcontroller) at Cornell University.

Course site: https://ece4760.github.io
Hunter’s site: https://vanhunteradams.com