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!

Generates rectangular waveforms of a user-defined duty and period. Waveforms can have a maximum frequency of 1MHz (period of 1 microsecond). Uses Paul Stoffregen's TimeOne library: https://github.com/PaulStoffregen/TimerOne.

Library for AHT10 and AHT20 temperature and humidity sensors. Wraps https://github.com/adafruit/Adafruit_AHTX0

A crash course tutorial baked as a project

Copy of std Ultrasonic range, but returns Max distance on failure so we can assume nothing close to us. My sensor seems to go low on ping capture, not success, so I changed timeout to max round trip to get full range.

A crash course tutorial baked as a project

LIS3DH triaxial accelerometer on an SPI bus. Wraps https://github.com/adafruit/Adafruit_LIS3DH. Datasheet: http://www.st.com/resource/en/application_note/cd00290365.pdf. N.B. this library has not been tested.

Quadrature Encoder Library for Arduino. Wraps https://github.com/PaulStoffregen/Encoder.

Contains the nodes of my project: ESR meter and Capacitance meter