Stereo VU meter based around an Arduino Nano, rotary encoder and a 1.8" 128 x 160 TFT screen.
Simple VU meter to display audio level (dBu) on 16x2 LCD using LiquidCrystal_I2C driver library.
Using the MKR GSM 1400 to collect and visualise data from a battery operated IoT sensor over a cellular connection.
Using the Spark Core to gather plant/garden environment data then post it for storage and visualization it to a custom cloud application.
M5StickC (ESP32 Pico) with built-in i2s microphone is used for audio spectrum analysis (ArduinoFFT) and visualization on an RGB led strip.
A simple project trying out animations on a matrix of 5 NeoPixel rings.
A 32-channel RGB audio spectrum analyzer / visualizer driven by teensy 3.2 with FFT using WS2812B 32x8 RGB LED
Grafana is a perfect tool to visualise data. It is very flexible and provides many different features to meet your needs.
This project does not require MQTT, Node-red, it only needs an ESP flashed with a customized Tasmota, Prometheus and Grafana.
Your Android phone is full of sensors. This tutorial aims to share some creative ideas on how to analyse the generated data.
