esp8266 – Page 4

[TH] LittleFS Filesystem

By jarutex November 1, 2021

บทความกล่าวถึงการใช้ไลบรารี LittleFS และแนะนำไลบรารีที่ถูกพัฒนาเพื่อใช้กับไมโครคอนโทรเลอร์ esp32 ซึ่งมีส่วนเสริม (plugin) ของ Arduino IDE สำหรับอัพโหลดไฟล์ไปเก็บในรอมของไมโครคอนโทรลเลอร์ ทำให้สะดวกต่อการโหลดข้อมูลไปเก็บและเรียกใช้งาน ด้วยเหตุนี้ถ้าผู้เขียนโปรแกรมรู้สึกยุ่งยากกับการแปลงโค้ด HTML/CSS/JavaScript ให้เป็นสตริงด้วยตนเอง และเปลี่ยนมาเป็นอัพโหลดไฟล์ไปเก็บใน esp32 แล้วอ่านไฟล์เว็บมาใช้งานโดยตรงจะเป็นสิ่งที่จะต้องฝึกฝนใช้งานเจ้า LittleFS ไว้เป็นไลบรารีคู่ใจกันเลยทีเดียว

English esp32 esp8266 MicroPython Python

[EN] random

By jarutex October 30, 2021

Random numbers in Python use the random class, but microcontrollers don’t support as much randomness as in computer systems, so Micropython supports different commands depending on the chip type. This article discusses how to use random with esp8266 and esp32 microcontrollers, which are instructed to just generate random numbers and configure the random seed as follows.

English esp32 esp8266 MicroPython Python

[EN] machine.RTC

By jarutex October 29, 2021

This article takes a detailed look at the Micropython machine.RTC class. The main function of this class is designed to be an RTC (Real-Time Clock) inside the microcontroller for storing date and time. It is more convenient when used with ESP8266 or ESP32 chip because NTP can be accessed to read the date and time from the internet and then store the value into the RTC to enable the accuracy and do not require frequent internet access to read the values again. This saves the use of external RTC circuits as well.

Arduino Arduino C/C++ English esp32 esp8266 sensor STM32

[EN] Arduino : DHT Sensor

By jarutex October 22, 2021

This article describes how Adafruit’s DHT Sensor library is compatible with all Arduino-compatible architectures, making it easier to deploy DHT sensors for humidity and temperature readings across multiple platforms. This article has tested with ESP32, ESP8266, Arduino UNO and stm32f103c and found that it can be used without modifying the code in the working part or having to modify the source code to make it compatible with the platform.

English esp32 esp8266 MicroPython Python

[EN] RTC DS1302 and Micropython

By jarutex October 19, 2021

This article describes programming to use the DS1302 (Figure 1), another RTC (Real-Time Clock) IC (previously written to PCF8583 in Python and Arduino C++). And it is a module that is popular for beginners because it is a module in the learning kit of Arduino, IoT, 37-Sensors or 45 Sensors, etc.

(Figure. 1 Example of ds1302 module connection.)

Arduino Arduino C/C++ English esp32 esp8266 STM32

[EN] RTC PCF8583

By jarutex October 18, 2021

From a Python article on how to use pcf8583 as an RTC (Real-time clock) board, we have rewritten the code for Arduino’s C++ programming with esp8266, esp32 and stm32.

English esp32 esp8266 MicroPython Uncategorized

[EN] An Interrupt in MicroPython

By jarutex October 7, 2021

This article describes the interrupt and intercept principle with MicroPython, experimented with ESP8266 and ESP32 as a guide to programming an external event response without waiting for the work in progress completed first.

(Figure. 1 Interrupt intercepting range detection experiment)

English esp32 esp8266 MicroPython Python sensor

[EN] Digital Compass Sensor

By jarutex October 6, 2021

This article describes the MicroPython GY-271 digital compass sensor for use with the ESP8266 or ESP32 (we have experimented with STM32F411CEU6 with Raspberry Pi 3B+ and 4B and found that it can be used as well) to set the operation and read the X,Y and Z axis values from the sensor, then calculate it as the degree of north.

display English esp32 esp8266 MicroPython

[EN] ESP8266 and OLED

By jarutex October 5, 2021

This article is about connecting the ESP8266 to an OLED, which is a two-color graphic LED, where 0 represents blank and 1 represents color dot. It is connected to the microcontroller via the I2C bus. How to use it and its functions are discussed as a guide and reference material for further implementation.

English esp32 esp8266 MicroPython sensor

[EN] ESP8266+PCF8583

By jarutex October 2, 2021

This article is programming in MicroPython to set/read the date and time of pcf8583, our favorite RTC. We found quite a few examples in Python, so we’ve made some sample codes for you to try.