Because we bought a 3.5″ display for the Raspberry Pi board to use and wonder if it can be used with the ESP32 board or not. Therefore, this article talks about how to use a TFT LCD Shield designed for Waveshare’s Raspberry Pi with the TTGO T8 ESP32 microcontroller via the TFT_eSPI library to display and operate a touch screen system as shown in Figure 1.
The article discusses the use of communication developed by espressif to communicate between its microcontrollers via wireless communication, as an alternative to the development of a non-linear Client/Server system. It describes the working process of working as a service provider, commander, and a set of related instructions through the Arduino core, along with explaining the working examples that come with both Arduino cores, which are basic and Multi-slave, which can be applied variously.
This article discusses setting the GPIO and sending the digital status 0 or 1 to the port, starting with the LED on and off by connecting to the external LED circuit of the board as shown in Figure 1.
This article describes setting up the Arduino’s TFT_eSPI library to use the ST7735s-controlled TFT LCD that was written as an example in a previous article in Python. We found that there are 2 0.96″ LCD IPS ST7735s models, which are GREENTAB160x80 and REDTAB160x80. Both modules differ in the spacing between them, as shown in Figure 1. This article uses the ESP8266, ESP32 DO-IT DevKit version with ESP32CAM and STM32F103C8T6. It is a board to test the functionality of the program.
This article is an update of the st7735 library file for Micropython by Billy Cheung (accessed 2021-09-07) published on github. It is a library that has been updated by Guy Caver to support ST7735s. The required libraries include st7735.py and sysfont.py Guy Carver implements esp8266 and esp32 to provide better display speed through the principle of display buffering for pixel storage and additional instructions for sending data from buffer to TFT module via SPI bus.
This article discusses the use of PWM or Pulse Width Modulation modules under the machine class of MicroPython for esp8266 and esp32, along with an example of using PWM to dim the brightness of an LED and the generation of audio frequencies with PWM, which can be applied in the future.
This article is an example of writing a game. Move the character to walk in the maze to collect flags that are randomly positioned as shown in Figure 1, where the character will walk in the specified channel and can’t penetrate the wall. With a warning sound when trying to walk in an impossible location and when walking in any direction will change the image of the character to turn the face to that direction. In addition, pressing A will randomize the position of the new flag, pressing B will randomize the player’s position, and pressing D will exit the program. The board for use is still dCoreML4M as before, let’s get started.
This article is an implementation of the MicroPython file system using the esp8266 and esp32 microcontroller boards as an experimental board. The file system usage involves directories and files including connecting the device to be seen as a MicroPython file system, for example, connecting to an SD-Card to see it as a system directory, etc. It uses the os class to create, open, access, write data and disable files which will be part of MicroPython’s file class.
This article is a client/server programming example for a wireless network weather station (Client/Server Programming for Weather Stations via Wireless Networking) using two esp32 microcontrollers communicate over a wireless network. By setting the DHT22 and LDR sensor installed as a server working in AP mode and another esp32 microcontroller board working as a client and media via a custom port to read the temperature, humidity and digital values obtained from the LDR sensor as shown in Figure 1.
This article describes the working principle of a 2-channel 12-Bit Digital-to-Analog converter module that works with MCP4922 IC with the MicroPython of the ml4m board via the SPI bus to output the analog signal in the triangular waveform. Squares as shown in Figures 6 and 7 of the example in this article.
