Altitude Estimation with Pressure Sensors (STM32, Firmware + Hardware) - Phil’s Lab #68

Estimating altitude (relative) with pressure measurements via a barometric pressure sensor. All the way from theory with equations, to implementation on custom hardware and custom firmware written for an STM32 microcontroller. Utilising an I2C/SPI-based absolute pressure sensor (SPL06-001), showing how the driver code was written. Including basics on simple digital IIR low-pass filters. Mixed-signal hardware design course: [SUPPORT] Free trial of Altium Designer: PCBA from $0 (Free Setup, Free Stencil): Tag-Connect: Patreon: [LINKS] GitHub: [TIMESTAMPS] 00:00 Introduction 00:11 Altium Designer Free Trial 00:34 JLCPCB & Design Files 01:06 Altitude from Pressure 02:10 Measuring Pressure 03:16 Calculations 04:15 Hydrostatic Method 05:17 Filtering Measurements 06:39 1st Order IIR Filter 08:05 Hardware Overview 09:11 Tag-Connect Debug Header/Probe 09:51 Pressure Sensor Datasheet (SPL06-001) 10:54 STM32CubeIDE Set-Up 12:04 Implementation (main.c) 16:31 Sensor Driver (SPL06.c/SPL06.h) 17:36 Initial Interrupt/Firmware Test 19:50 Pressure (Raw and Filtered) Measurement Test 23:30 Altitude Estimation Test ID: QIBvbJtYjWuHiTG0uCoK