A crash course tutorial baked as a project

Graphics library for the Sense CAP Indicator screen. Wraps https://github.com/WaylandM/Seeed_Arduino_GFX

GFX fonts for the SenseCAP Indicator display. To be used with the draw-string node of the sensecap-indicator-gfx library. Wraps https://github.com/WaylandM/XOD_ArduinoFreeFontFile.

This is a simple low-frequency PWM-write made from nodes of the standard library. I use it for ESP32 because the standard pwm-write node doesn't work. The effective frequency is 100-200 Hz. Duty cycle varies from 16...83%. Also accepts discrete 0s and 1s. I checked the result of the node's operation with an oscilloscope.

A crash course tutorial baked as a project

Nodes for the RP2040 in the Seeed Studio SenseCAP Indicator.

SGP air quality sensor. Wraps https://github.com/adafruit/Adafruit_SGP40

Sensirion SCD4x CO2, relative humidity and temperature sensor. Wraps https://github.com/Sensirion/arduino-i2c-scd4x

Accumulate characters in string and read characters from string. It is possible to store "namber" or "byte" in a string as a stream of characters. And from this string, read the characters indicated by the index. Characters will be displayed in the form of "number" or "byte".

Helper nodes to connect to a WiFi network and make requests using an ESP32 directly.

A crash course tutorial baked as a project

MLX90614 temperature sensor. Wraps https://github.com/adafruit/Adafruit-MLX90614-Library. UNTESTED!

XOD library to control the internal real time clock (RTC) of the Arduino Zero, MKR1000 and related boards. Tested using the MKR Vidor 4000. Wraps https://github.com/arduino-libraries/RTCZero

BMP280 barometric pressure and temperature sensor. Wraps https://github.com/adafruit/Adafruit_BME280_Library. Datasheet: https://cdn-learn.adafruit.com/assets/assets/000/115/588/original/bst-bme280-ds002.pdf. N.B. UNTESTED!