🤖 Stereo Vision: Making a Depth Map from scratch
Imagine you need to create an environmental garbage-collection robot. However, you do not want to invest heavily in LiDAR technology to determine how far the trash is. This is where Stereo Vision comes into play.
Using two regular pin-hole cameras to not only detect depth but also use the same camera for other Machine Learning tasks can be a huge cost-saving factor.
This project is a great way for beginners to step into the field of not just Computer Vision but Computer Science as a whole, picking up skills in Python and OpenCV.
To begin on this project, you'll need a few essentials:
▫️ Jetson Nano Developer Kit B01
▫️ Two Raspberry Pi cameras
▫️ Interest!
More information:
Part 1: Introduction
Part 2: Depth Map
Part 3: Adding Object Detection
#articles #robots #machine_learning #python
Imagine you need to create an environmental garbage-collection robot. However, you do not want to invest heavily in LiDAR technology to determine how far the trash is. This is where Stereo Vision comes into play.
Using two regular pin-hole cameras to not only detect depth but also use the same camera for other Machine Learning tasks can be a huge cost-saving factor.
This project is a great way for beginners to step into the field of not just Computer Vision but Computer Science as a whole, picking up skills in Python and OpenCV.
To begin on this project, you'll need a few essentials:
▫️ Jetson Nano Developer Kit B01
▫️ Two Raspberry Pi cameras
▫️ Interest!
More information:
Part 1: Introduction
Part 2: Depth Map
Part 3: Adding Object Detection
#articles #robots #machine_learning #python
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📷 Arduino Nicla Vision
Arduino Nicla Vision is an ultra-compact (~2.3×2.3 cm) board powered by an STM32H7 dual-core Cortex-M7/M4 microcontroller, and equipped with a 2MP camera, a Wi-Fi & Bluetooth LE module, and a few sensors.
Those features make the board suitable for machine vision and edge computing applications such as asset tracking, image detection, object recognition, and predictive maintenance.
Specifications:
▫️ Microcontrollers: STM32H757AII6 dual-core MCU with Arm Cortex M7 @ 480MHz, Cortex-M4 @ 240MHz, 2 MB flash, 1MB RAM
▫️ Storage: 16MB QSPI flash
▫️ Camera: 2MP GC2145 color camera
▫️ Sensors: 6-axis motion sensor, integrated microphone, and VL53L1 ToF distance sensor
▫️ Connectivity: 2.4GHz WiFi 802.11b/g/n up to 65 Mbps and Bluetooth 5.1 BR/EDR/LE via Murata 1DX module
The Nicla Vision board works with OpenMV, supports the Arduino IDE, Arduino Web, and MicroPython with connectivity to the Arduino Cloud or third-party vendor services.
#news #boards #arduino
Arduino Nicla Vision is an ultra-compact (~2.3×2.3 cm) board powered by an STM32H7 dual-core Cortex-M7/M4 microcontroller, and equipped with a 2MP camera, a Wi-Fi & Bluetooth LE module, and a few sensors.
Those features make the board suitable for machine vision and edge computing applications such as asset tracking, image detection, object recognition, and predictive maintenance.
Specifications:
▫️ Microcontrollers: STM32H757AII6 dual-core MCU with Arm Cortex M7 @ 480MHz, Cortex-M4 @ 240MHz, 2 MB flash, 1MB RAM
▫️ Storage: 16MB QSPI flash
▫️ Camera: 2MP GC2145 color camera
▫️ Sensors: 6-axis motion sensor, integrated microphone, and VL53L1 ToF distance sensor
▫️ Connectivity: 2.4GHz WiFi 802.11b/g/n up to 65 Mbps and Bluetooth 5.1 BR/EDR/LE via Murata 1DX module
The Nicla Vision board works with OpenMV, supports the Arduino IDE, Arduino Web, and MicroPython with connectivity to the Arduino Cloud or third-party vendor services.
#news #boards #arduino
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📃 Soldering SMDs with Hot Plate Tips
The hotplate method is the easiest soldering method for the hobby electronics enthusiast.
The basic process looks like this:
▫️ Apply Solder Paste to all the SMD pads.
▫️ Place all SMD components in the appropriate place.
▫️ Heat up the entire board to melt the solder and solder all parts simultaneously.
▫️ After the board has cooled, fix any solder bridges.
▫️ Solder in the remaining through-hole parts, if any.
The are a few tips to improve the process:
▫️ If you are doing runs of 5+ boards, you will probably want to make a solder paste stencil.
▫️ If you're good with the solder paste, you can lay a thin line of the paste on the pad, and do that for every pad. This is the recommended way, but it can be tricky.
▫️ If you spend money on any part of your setup, get a good pair of tweezers to place SMDs.
▫️ A solder bridge is when solder connects two pins that are next to each other that are not supposed to be connected. Use desolder braid to remove them.
#articles
The hotplate method is the easiest soldering method for the hobby electronics enthusiast.
The basic process looks like this:
▫️ Apply Solder Paste to all the SMD pads.
▫️ Place all SMD components in the appropriate place.
▫️ Heat up the entire board to melt the solder and solder all parts simultaneously.
▫️ After the board has cooled, fix any solder bridges.
▫️ Solder in the remaining through-hole parts, if any.
The are a few tips to improve the process:
▫️ If you are doing runs of 5+ boards, you will probably want to make a solder paste stencil.
▫️ If you're good with the solder paste, you can lay a thin line of the paste on the pad, and do that for every pad. This is the recommended way, but it can be tricky.
▫️ If you spend money on any part of your setup, get a good pair of tweezers to place SMDs.
▫️ A solder bridge is when solder connects two pins that are next to each other that are not supposed to be connected. Use desolder braid to remove them.
#articles
👍7
Around the web, there are many DIY reflow ovens, however they have one big downside: they take up a lot of space. So author decided to build a hotplate instead.
The hotplate is fully programmable, so that any reflow profile can be added. The reflow process is then fully automated.
Important parts:
The case is made out of lasercut MDF. The MDF parts only touch the feet of the hotplate, which are significantly cooler (max 60°C) than the top of the hotplate. Everywhere else, the MDF and hotplate are separated by a small air gap.
More information...
#projects #arduino #tools
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This is a very interesting input device with software-configurable endstops, virtual detents, haptic touch feedback, and a round LCD.
A brushless gimbal motor is paired with a magnetic encoder to provide closed-loop torque feedback control, enabling virtual endstops and detents. Internally, everything is powered by an ESP32, with a TMC6300 BLDC motor driver, HX711 strain gauge ADC, VEML7700 ambient light sensor, and more!
Key features of the project:
This project offers an innovative solution for modern human-device interfaces and is made only off-the-shelf components. The source files are represented in both hardware and software domain.
More information:
#projects #esp32
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📰 The acceleration of global chip-crunch
Semiconductor manufacturers rely on neon to control the specialized lasers they use to make computer chips. Right now, it’s not clear whether they have enough time to find and develop new sources of this gas before their backup supplies run out: Chip companies and industry analysts say there’s anywhere between one to six months worth of neon in reserve.
If that runs out, these companies won’t be able to make semiconductors. This means that the worldwide chip shortage — which was expected to end sometime in the next year — could draw out even longer, leading to higher prices, delivery delays, and shortages of critical technology.
A solution to the neon shortage won’t be the end of the chip industry’s problems, though. Even if new sources of neon arrive, the ongoing war could still create a shortage of other critical supplies used for chips. Russia makes a large chunk of the supply of palladium, a metal that’s used in semiconductors and catalytic converters.
#news
Semiconductor manufacturers rely on neon to control the specialized lasers they use to make computer chips. Right now, it’s not clear whether they have enough time to find and develop new sources of this gas before their backup supplies run out: Chip companies and industry analysts say there’s anywhere between one to six months worth of neon in reserve.
If that runs out, these companies won’t be able to make semiconductors. This means that the worldwide chip shortage — which was expected to end sometime in the next year — could draw out even longer, leading to higher prices, delivery delays, and shortages of critical technology.
A solution to the neon shortage won’t be the end of the chip industry’s problems, though. Even if new sources of neon arrive, the ongoing war could still create a shortage of other critical supplies used for chips. Russia makes a large chunk of the supply of palladium, a metal that’s used in semiconductors and catalytic converters.
#news
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💻 C++ Tricks for C Programmers
C++ offers developers modern tools to leverage when designing more reusable, scalable, and portable code.
▫️ Conditional Compilation Using Constexpr: The bane of many embedded code bases written in C is the large numbers of #if / #elif / #else preprocessor directives. Starting in C++ 17, the language introduced the ability for developers to conditionally compile code using constexpr.
▫️ Ranged for Loops: The C for loop has been stuck in the dark ages by not having a simplified range-based option. Starting in C++ 11, an additional version of the for loop was added that makes working with ranged values easier.
▫️ Use Auto: C developers used to use auto to specify a variable that was limited to the current scope. In C++, auto can be a very useful keyword that tells the compiler to automatically assign the datatype for the developer.
▫️ The Spaceship Operator: Just recently, C++ 20 add a three-way comparison operator <=> that can simplify readability and the code.
#articles
C++ offers developers modern tools to leverage when designing more reusable, scalable, and portable code.
▫️ Conditional Compilation Using Constexpr: The bane of many embedded code bases written in C is the large numbers of #if / #elif / #else preprocessor directives. Starting in C++ 17, the language introduced the ability for developers to conditionally compile code using constexpr.
▫️ Ranged for Loops: The C for loop has been stuck in the dark ages by not having a simplified range-based option. Starting in C++ 11, an additional version of the for loop was added that makes working with ranged values easier.
▫️ Use Auto: C developers used to use auto to specify a variable that was limited to the current scope. In C++, auto can be a very useful keyword that tells the compiler to automatically assign the datatype for the developer.
▫️ The Spaceship Operator: Just recently, C++ 20 add a three-way comparison operator <=> that can simplify readability and the code.
#articles
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💻 F Prime - Flight Software & Embedded Systems Framework
F Prime is a software framework for the rapid development and deployment of embedded systems and spaceflight applications.
Originally developed at NASA’s Jet Propulsion Laboratory, F´ is open-source software that has been successfully deployed for several space applications.
It has been used for but is not limited to, CubeSats, SmallSats, instruments, and deployable. Framework runs on a wide range of processors, from microcontrollers to multi-core computers.
F´ has the following features:
▫️ Component architecture with well-defined interfaces
▫️ C++ framework providing core capabilities like queues, threads, and operating-system abstraction
▫️ Tools for designing systems and automatically generating code from systems design
▫️ A standard library of flight-worthy components
▫️ Testing tools for unit and system-level testing
More information:
Key features
Official website
GitHub repository
#software #libraries
F Prime is a software framework for the rapid development and deployment of embedded systems and spaceflight applications.
Originally developed at NASA’s Jet Propulsion Laboratory, F´ is open-source software that has been successfully deployed for several space applications.
It has been used for but is not limited to, CubeSats, SmallSats, instruments, and deployable. Framework runs on a wide range of processors, from microcontrollers to multi-core computers.
F´ has the following features:
▫️ Component architecture with well-defined interfaces
▫️ C++ framework providing core capabilities like queues, threads, and operating-system abstraction
▫️ Tools for designing systems and automatically generating code from systems design
▫️ A standard library of flight-worthy components
▫️ Testing tools for unit and system-level testing
More information:
Key features
Official website
GitHub repository
#software #libraries
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