Embedded Systems

📹 Building a Stereoscopic Camera With the Raspberry Pi 4 Compute Module StereoPi is an open-source stereoscopic camera based on Raspberry Pi. It can capture, save, livestream, and process real-time stereoscopic video and images. StereoPi opens up countless possibilities in robotics, AR/VR, computer vision, drone instrumentation, panoramic video, and more. More information: The development CrowdSuppy page #raspberry #camera

📟 Control ESP32 and ESP8266 GPIOs from Anywhere in the World In this project you’ll learn how to control your ESP32 or ESP8266 GPIOs from anywhere in the world. This can be very useful to control a relay, a thermostat, or any other device remotely. To build this project, you’ll use these technologies: ▫️ ESP32 or ESP8266 programmed with Arduino IDE ▫️ Hosting server and domain name ▫️ PHP scripts to store and retrieve the output states stored in a MySQL database More information... #projects #esp32 #IoT

💻 Top 15 Languages for Embedded Systems Programming Since programmers face different resource constraints during embedded systems programming, they often tend to choose languages that have a very low memory footprint. Old-school programming languages that offer very low-level access to hardware are the best fit for such developments. Below, we’re outlining the 15 best languages for programming your next embedded system. More information... #news #programming #software

🖥 PID controller implementation by using C++ Short article that gives plain and simple explanation on work of PID controller (widely used in control systems). Provides the C++ code with explanations, all the necessary formulas, etc. More information... #programming #PID #control #cpp #beginner

🎬 Tutorial: How to easily model robots using ONSHAPE We live in a time where our phones have computing power that would have been the envy of NASA a few decades ago. So, in theory, we should be able to simulate just about anything. Thanks to [rhoban], robots you design in OnShape — a popular CAD tool — are now easier to simulate using several common simulation tools. https://youtu.be/C8oK4uUmbRw #video #robots #design #3D_modeling

🤖 Telegram Bot: ESP32-CAM Take and Send Photo In this tutorial, you’ll create a Telegram bot to interact with the ESP32-CAM to request a new photo. Here’s an overview of the project you’ll build: ▫️ You’ll create a Telegram bot for your ESP32-CAM; ▫️ You can start a conversation with the ESP32-CAM bot; ▫️ When you send the message /photo to the ESP32-CAM bot, the ESP32-CAM board receives the message, takes a new photo and responds with that photo; ▫️ You can send the message /flash to toggle the ESP32-CAM’s LED flash; ▫️ You can send the /start message to receive a welcome message with the commands to control the board; ▫️ The ESP32-CAM will only respond to messages coming from your Telegram account ID. More information... #projects #bot #esp32 #camera #IoT

📟 STM32U5 Cortex-M33 MCU gets more performance, 2D graphics accelerator, and advanced security The new family has a higher 160 MHz clock speed, up to 2048 KB flash, up to 786 KB RAM, a 2D graphics accelerator, several peripherals have been upgraded, and a new autonomous mode lets DMA and peripherals keep working while most of the device sleeps in order to save power. STM32U5 MCUs also integrate additional hardware security features, and are manufactured using a 40nm process, which the company says is the most advanced process suitable for microcontrollers. The new STM32U5 microcontrollers will be supported by the STM32Cube software suite that includes Azure RTOS (aka ThreadX), STM32CubeMX, and STM32CubeIDE tools, as well as code examples. Third-party IDEs such as IAR Embedded Workbench and MDK-ARM are also supported. More information... #news #boards #stm32

📺 In-Dash GPS Navigation with Raspberry Pi 3 The article shows the process of development of the GPS navigator for a car using Raspberry Pi 3 with Navit (uses OpenStreetMap for map data). Includes 3D development of the case for device, schematics, code, etc. More information... #projects #gps #raspberry

🔭 Laser Projected Asteroids on the ESP32 The article (with video) describes the process of recreating of classic old game for laser projection using esp32 controller. The project includes both schematics and explained software part with detailed explanations. The game is implemented using the Esspressif IDF using PlatformIO to build and deploy. "All in all, it's a pretty successful project. Even with my very low power 5mw laser, I can get around 2m x 2m projection at a good brightness in a dark room." More information: ▫️ Video explanation ▫️ Code for the project ▫️ Schematic Files #projects #esp32 #display #laser

🎛 Tiny 2040 – Pimoroni Pimoroni has officially launched its Tiny RP2040, an ultra-compact competitor to the Raspberry Pi Pico. The Tiny 2040 uses the same Raspberry Pi RP2040 microcontroller as the Pico, running its two Arm Cortex-M0+ cores at the same 133MHz+ clock speed and with the same 264kB of static RAM (SRAM). From there, the two diverge considerably: The Tiny 2040 is an ultra-compact design the size of a UK postage stamp with 12 general-purpose input/output (GPIO) pins, an on-board switch, user-controllable RGB LED, and 8MB of quad-SPI flash with execute-in-place (XIP) capabilities. Specifications: ▫️ Powered by RP2040 ▫️ ARM Cortex M0+ running at up to 133Mhz ▫️ 264kB of SRAM ▫️ USB-C connector for power, programming, and data transfer ▫️ 8MB of QSPI flash supporting XiP ▫️ User controllable RGB LED ▫️ Twelve IO pins (including four 12-bit ADC channels) ▫️ Switch for basic input (doubles up as DFU select on boot) ▫️ On-board 3V3 regulator More information: ▫️News link ▫️Store link #boards #news

📟 ESP32 Deep Sleep mode using Arduino IDE This article is a complete guide for the ESP32 Deep Sleep mode with Arduino IDE. We’ll show you how to put the ESP32 into deep sleep and take a look at different modes to wake it up: timer wake up, touch wake up, and external wake up. This guide provides practical examples with code, code explanation, and schematics. Having your ESP32 running on active mode with batteries it’s not ideal, since the power from batteries will drain very quickly. If you put your ESP32 in deep sleep mode, it will reduce the power consumption and your batteries will last longer. More information... #projects #esp32

📺 30 FPS FLIP-DOT display controlled by ESP32 The article describes the process of development of a novel type of display (which has a lot of advantages) based on magnetic induction and the way it can be controlled by ESP32 microcontroller. There are tiny magnets hidden inside each flat dots. Basically, to flip a dot, you have to flow an electrical current into the coil, generating a magnetic field around it. The direction this current flows will flip the dot from one position to the other. Only a short pulse of current is needed. The electromagnet core stays polarized, keeping the dot on position, even when the power is gone. More information: ▫️ Main article ▫️ Code & schematics #projects #esp32 #display

🎥 ESP32-CAM Video Streaming Web Server In this project we’re going to build an IP surveillance camera with the ESP32-CAM board. The ESP32 camera is going to host a video streaming web server that you can access with any device in your network. You can integrate this video streaming web server with popular home automation platforms like Home Assistant or Node-RED. In this tutorial, we’ll show you how to integrate it with Home Assistant and Node-RED. More information... #projects #camera #esp32 #web

📟 Augmented reality on the cheap with ESP32 The author of the following article designed and built VR glasses around a 3D printed frame, ESP32, cheap LCDs, and lenses from a pair of sunglasses. The electronics is packed horizontally in the top of the frame, with the displays pointed down into a pair of angled mirrors, which reflect the image onto the sunglasses lenses and into the user’s eyes. Then he tested a number of different lenses and found that a thin lens with a slight curve worked best. The ESP32 doesn’t actually run the main software, it just handles displaying the images on the LCDs. The images are sent from a computer running software written in Processing. Besides just displaying images, the software can also integrate inputs from a MPU6050 IMU and ESP32 camera module mounted on the goggles. This allows the images to shift perspective as the goggles move, and recognize faces and AR markers in the environment. More information... #projects #vitrual_reality #esp32

🎬 How to use the two Cores of the Pi Pico? The new Pi Pico has two cores. How can we use both? And: If you want to play with the Pico, this video can save you a lot of time because we will discover the main differences between programming an Arduino and a Pi Pico. After this video, you will know more than 99% of all Pi Pico users. And you know how to avoid some quirks. https://youtu.be/9vvobRfFOwk #video #raspberry #pico

📥 Porting Fuzix to the ESP8266 In addition to the previous post, one more guide describing the port of the FuzixOS on the popular development board ESP8266. The system supports: ▫️ user binaries with up to 31.5kB of code and 64kB of data ▫️ a proper Unix filesystem (files, directories, mostly unlimited sizes, etc) ▫️ SD card and NAND flash support — the latter via the Dhara FTL library ▫️ 80MHz clock (can be increased; the ESP8266 can go up to about 350MHz) More information... #projects #esp8266 #fuzix #software #operating_systems

📥 Porting Fuzix on the Raspberry Pi Pico As Linux does not work on Raspberry Pi Pico, the author of this article has shown how to port FuzixOS on this development board. The Fuzix port has a lot of interesting features: ▫️ user binaries using up to 64kB of code and data each (this could be expanded, as there’s plenty of spare RAM) ▫️ up to 15 processes ▫️ a proper Unix filesystem ▫️ SD card support, used for both the filesystem and swap space ▫️ serial console on UART0 ▫️ the full set of Fuzix core binaries work — fsck, Bourne shell, the standard Unix tools, a vi clone, etc, plus some simple games More information... #projects #raspberry #fuzix #software #operating_systems #pico

🎛 Insanely Small Development Board: T402 Atto It’s an extremely simple circuit and hardly something that hasn’t been done before, but the value here is in the tricky soldering to make it rather than its novelty. The ATtiny402 and three passive SMD components are fitted on the smallest possible sliver of prototyping board to contain them, and the female headers and set of programming pins contribute far more to the volume of the device than the board itself. He also tried a side-on design with two smaller slivers of board before settling on the more conventional layout. The demonstration of the system in action seen in the video: the break is a magnetic flux detector, dwarfed by the 40-pin DIP Z80 it is sitting on. More information... #boards #arduino #experiments