Code and build files for Rabbitcreek's VO2Max Spirometer. Incorporating CO2 enhancements from Ulrich Rissel. Build instructions on Instructable See Nik's pages for excellent build details: meteoscientific
Source code for Arduino under "VO2Max" - Arduino board settings to use for TTGO T-Display:
Board: ESP32 Dev Module
Upload Speed: 921600
CPU Frequency: 240Mhz (WiFi/BT)
Flash Frequency: 80Mhz
Flash Mode: QIO
Flash Size: 4MB (32Mb)
Partition Scheme: Default 4MB with spiffs (1.2MB APP/1.5 SPIFFS)
Core Debug Level: None`