[EN] Arduino : DHT Sensor

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.

(Figure. 1 dht22 and BluePill)

[EN] Arduino : RTC DS1302

From the article programming Python on Micropython to use RTC number DS1302, this time, we change the programming language to C++ for Arduino by using STM32F030F4P6 Cortex-M0, esp8266 and Arduino Mega as a worker instead of ESP32 as shown in Figures 1, 2 and 6 by show the report on the RS232 port to display the date and time as shown in Figure 4.

(Figure. 1 DS1302 experiment with STM32F30F4_6.)

[EN] Arduino: JoyStick Shield

This article is a guideline on using GamePad/Joystick with Arduino Uno or Arduino Mega because it is a module designed as a shield of both boards. When assembled, you will get 1 cute gamepad as shown in Figure 1. The article explains more about the information of the connection between each device and the GPIO with examples of use. The content about the joystick module can be read from the previous article.

(Figure. 1 Joystick Shield)

[EN] Arduino: Joystick Module

This article is programming to write a program to use the joystick module as shown in Figure 1, in which the module can tell the X-axis movement, Y-axis movement, and the state of pressing the switch on the joystick. An example of this module is to use the esp32 board using C++ to connect to the GPIO using the commands mentioned in this article.

(Figure. 1 esp32 with joystick

[EN] Arduino: STM32F030F4P6

This article is about using a 32-bit microcontroller board under the Cortex-M0 architecture RISC that is economical but the performance is considerably better than the 8-bit board. However, our team has created an alternative for those who are interested in reading. The article starts with the content about the features of microcontrollers, board installation for Arduino IDE to know and example code to toggle LED, traffic through the USART communication port and Prime numbering test to see the processing speed in an iterative loop.

(Figure. 1 STM32F030F4P6)

[EN] Arduino:ET-BASE AVR EASY4809

This article is the use of ETT‘s ET-BASE AVR EASU4809 board based on Microchip’s ATMEGA4809 microcontroller, which is used as an Arduino board running at 20MHz with 40KB FLASH ROM, 256 bytes EEPROM, 6KB of RAM, and a 10-bit ADC, which is said to have significantly higher features than the ATmega 368P used with the Arduino Uno or Arduino Nano. In addition, the board selected this time has more features than basic Arduino boards which you can read further from the web page of the board.

(Figure. 1 ET-BASE AVR EASY4809)

[EN] Arduino: LGT8F328P

This article discusses how to use Arduino with the LGT8F328P microcontroller, a microcontroller similar to the Atmel AVR atmega328P used on the Arduino Uno and Arduino Nano family, but with additional capabilities such as higher speed and has a higher resolution for converting analog signals and having a digital-to-analog converter as well, so this article will start from properties, board installation and example of using the features of this microcontroller.

(Figure. 1 LGT8F328P QFP32L)

[EN] ESP-IDF Ep.1: ESP-IDF on Raspberry Pi

This article is a step-by-step guide to installing ESP-IDF on a Raspberry Pi 3 or 4 board with the Raspbian operating system (Or can be applied to other operating systems with AMD/Intel processors) to be used as a C++ interpreter for developing programs for the ESP32 board, which is called bare metal or used to compile MicroPython, in particular mpy-cross, a translator from Python (.py) to bytecode (.mpy), which protects source code, allowing faster execution of instructions. (because it has been translated before) and the file size is smaller.

(Figure. 1 Terminal)

[EN] Arduino : repetition

Programming is an instruction for the processor to execute an instruction received. At a time, there is one instruction to process (in the case of non-parallel processing), once the instruction is completed, it saves the results of the commands in the working status register and prepares the next commands to be executed. This allows the operation to be performed individually from the first statement to the next, and the programmer can place the condition to separate the execution, for example, when a condition is true some instruction will be executed or any condition is not true, do not have to do or do something, etc. And finally, the function of the program can be repeated by the condition of iteration. For this reason, the basic programming principles consist of 3 types of work:

  • Execute one command at a time from top to bottom.
  • Able to add conditions of order processing.
  • Able to repeat the desired command.