Real-Time Software Implementation of Analog Filters - Phil's Lab #20

Modelling analog filters, discretisation, and implementation of the digitally-equivalent filters on a real-time, embedded system (STM32). Includes theory, DSP, firmware, and results.

Git: https://github.com/pms67/LittleBrain-...

30k Q&A survey: https://forms.gle/jX3MLiZbUHhss6DMA

Visit https://jlcpcb.com/RHS​ for $2 for five 2-layer PCBs and $5 for five 4-layer PCBs.

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[TIMESTAMPS]
00:00 Introduction
00:38 JLCPCB and LittleBrain PCB
01:19 30k Subs Survey
01:37 Overview
02:48 Digital Filtering Advantages
03:13 Going From Analog to Digital
03:39 Modelling Analog Filters
04:17 Example: RC Low-Pass Filter
05:12 Discretising the Filter
05:54 Backward Euler Method
06:27 RC Low-Pass Filter Difference Equation
07:45 Practical Tips (-3dB, Sampling Period)
08:54 Filter Header File
09:50 Filter Source File
12:03 Main Source File Modifications
13:40 Implementation Demo

ID: QIBvbJtYjWuHiTG0uCoK