Electronic, 3D printing and embedded programming
This guide demonstrates how to send emails with attachments from STM32 microcontrollers using SSL encryption, like Gmail. It covers using w5500 and enc28j60 for network connectivity and SD cards and SPI Flash for storage. With detailed setup instructions and coding examples, it enables secure email communication in STM32-based projects.
WeAct ESP32 S3 (A) DevKitC 1: high-resolution pinout, datasheet and specs
LuatOS CORE ESP32 C3: high-resolution pinout and specs
Unlock the potential of wireless Arduino UNO programming with DT-06 and ESP-Link Firmware. Our guide explores the seamless integration of WiFi and serial communication, transcending the DT-06’s original firmware limitations, and upgrading remote device management in the IoT domain
We have already addressed the topic of remote wireless programming via Bluetooth of an Arduino UNO in our previous article titled “Arduino Remote/wireless Programming” however, thanks to the feedback and questions from our readers, we have decided to delve even deeper into this subject, exploring the possibilities that WiFi connectivity offers.
This integration involves connecting the LAN8720 Ethernet module with the ESP32 microcontroller to enable wired network connectivity. The process includes configuring the ESP32 to recognize and communicate through the LAN8720 module, ensuring compatibility with both plain text (HTTP) and encrypted (HTTPS) SSL data transmissions.
To enhance the ease of use for complex modules in electronics, I’m going to show my 3D-printed adapter for the EByte RF E70 module. This design, following the footsteps of my previous projects for the ESP12 and ESP32, focuses on making the E70 module breadboard-friendly for straightforward initial configuration using a PC USB.
EByte RF E70 433/868/900 T14S2: pinout, datasheet and specs
ESP32 NODEMCU-32S ESP-32S Kit: high resolution pinout, datasheet, and specs
Here is my Arduino battery tester, designed to explore the performance of various types of batteries, including 18650 and acid-based ones. Successfully tested even with a 6V lead-acid battery with a capacity of 4.2A, this device provides battery capacity readings in milliampere-hours. In fact, it’s an old article that I had never published before, but I have revisited and decided to publish it now.
