Starred repositories
A two-step Kalman/Complementary filter for Estimation of Vertical Position using an IMU-Barometer sytem
Variometer running on Arduino. Uses barometer, display and a speaker.
Wi-Fi and BT drivers packaged for integration into bare-metal esp-wifi.
Barometric Pressure & Temperature Sensor Arduino Library
Combination of MPU-9250 and BMP180, I2C device selectable.
Simple Kalman filter library for Arduino
A linear Kalman filter estimating altitude and vertical velocity by doing sensor fusion of acceleration and any altitude measurement such as e.g. barometer or SONAR.
ESP32-C3 audio vario using Kalman filter to fuse acceleration and pressure sensor data. Bluetooth transmission of LK8EX1 sentences.
The ultimate sensor box for your flight computer.
A bluetooth audio vario with zero-lag climb/sink rate feedback. Configurable and firmware upgradable via WiFi. Uses off-the-shelf modules. Schematic and PCB layout provided.
An XCSoar-targeted sensor using esp32, mpu6050 in DMP mode and ms5607 (despite the class names) pressure sensor and GPS, publishing NMEA sentences on serial port.
GPS altimeter/variometer with LCD display, routes with waypoints, data/gps track logging, bluetooth NMEA sentence transmission, wifi AP + webpage configuration
A variometer using esp32 and mpu9250 and DMP mode
Simple Bluetooth Vario (Arduino + MS5611 barometric pressure sensor) with LK8000/LXNAV bluetooth sentences
Hardware button actions: click, doubleClick, longPress
based on: http://sebastianpirch.tumblr.com/post/143004036123/diy-bluetooth-variometer-for-xcsoar-is-now
Acoustic Mini Variometer with Bluetooth function
Simple Variometer for Paragliding. BMP180 sensor. 1602 display. Arduino Nano/Uno.