Category: esp8266

PCF8574 i2c Digital IO Expander Rotary Encoder 0

PCF8574 i2c digital I/O expander: Arduino, esp8266 and esp32, rotary encoder – Part 2

Library to use i2c pcf8574 IC with arduino, esp8266 and esp32.

This IC can control (until 8) digital devices like button or led with 2 only pins.

Here I explain the manage of multiple rotary encoder.

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FTP server on esp8266 and esp32

For static information (Web pages for examples), that not change frequently, esp8266 or esp32 have internal SPIFFS (SPI Flash File System) and you can upload data via Arduino IDE as explained in the article “WeMos D1 mini (esp8266), integrated SPIFFS Filesystem” but for fast operation and future support It’s usefully use FTP.

LoRa E32 device for Arduino, esp32 or esp8266: WOR (wake on radio) microcontroller and new WeMos D1 mini shield 2

LoRa E32 device for Arduino, esp32 or esp8266: WOR (wake on radio) microcontroller and new WeMos D1 mini shield – Part 7

Here a tutorial on E32 LoRa (Long Range) device very cheap and very long range (from 3Km to 8Km).
In this chapter we are going to wake on radio the LoRa E32 and microcontroller and we show the WeMos D1 mini shield created for this device.

LoRa E32 device for Arduino, esp32 or esp8266 WOR (wake on radio) the microcontroller also and new Arduino shield 5

LoRa E32 device for Arduino, esp32 or esp8266: WOR (wake on radio) microcontroller and new Arduino shield – Part 6

Here a tutorial on E32 LoRa (Long Range) device very cheap and very long range (from 3Km to 8Km).
In this chapter we are going to wake on radio the LoRa E32 and microcontroller and we show the shield created for this device.

WeMosD1Mini esp8266 Sleep modem light deep wake 1

WeMos D1 mini (esp8266), the three type of sleep mode to manage energy savings – Part 4

When you create a new IoT project probably you need to connect microcontroller to a battary power source, but if you don’t use a power saving options your battery will run out in no time.
As a lot of IoT microcontroller, WeMos D1 mini have some power saving mode.
The types are modem sleep, light sleep and deep sleep.