Wemos and DS3231 RTC example

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The DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping when main power to the device is interrupted. Features

Highly Accurate RTC Completely Manages All Timekeeping Functions Real-Time Clock […]

Wemos and PCF8563 RTC example

The PCF8563 is a CMOS Real-Time Clock (RTC) and calendar optimized for low power consumption. A programmable clock output, interrupt output, and voltage-low detector are also provided. All addresses and data are transferred serially via a two-line bidirectional I²C-bus. Maximum bus speed is 400 kbit/s.

Features

Provides year, month, day, weekday, hours, minutes, […]

Sampling analog data

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Sampling sata is particularly useful for analog sensors such as an LDR or a thermistor. Another good example is one of the MQ gas sensors that can be bought.

You can change the amount of samples to take and the interval which is in millioseconds

Source code   int sampleData(int analogPin, […]

3 channel tracking sensor example

This Tracking Sensor for Arduino can detect the white lines in black and black lines in white. This particular module has 3 sensors

Using infrared light detection, anti-interference ability Built-in LED indicator lights Sensor CTRT5000, high sensitivity, stable performance Operating voltage 5V, output low black line, white line output high

This module worked with […]