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39 Experiments with Raspberry Pi and Arduino This book is about Raspberry Pi 3 and Arduino camera projects. The book explains in simple terms and with tested and working example projects, how to configure and use a Raspberry Pi camera and USB based webcam in camera-based projects using a Raspberry Pi. Example projects are given to capture images, create timelapse photography, record video, use the camera and Raspberry Pi in security and surveillance applications, post images to Twitter, record wildlife, stream live video to YouTube, use a night camera, send pictures to smartphones, face and eye detection, colour and shape recognition, number plate recognition, barcode recognition and many more. Installation and use of popular image processing libraries and software including OpenCV, SimpleCV, and OpenALPR are explained in detail using a Raspberry Pi. The book also explains in detail how to use a camera on an Arduino development board to capture images and then save them on a microSD card. All projects given in this book have been fully tested and are working. Program listings for all Raspberry Pi and Arduino projects used in this book are available for download on the Elektor website.

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. USB Measurement AdapterTesting Current and Signal Quality of USB Ports 4...20 mA Current Output for Arduino UnoA Reliable, EMI-Insensitive Current Loop Interface Vacuum Cleaner Automatic ControlKeep Your Tools’ Work Area Clean DDS Generator with ATtiny Opamp-Tester V2New PCB – Now Also Suitable for SMDs 550-mW “Lamp” Audio AmplifierGet the Warm Sound of Vacuum Tubes With Ease Fuse GuardMonitoring a Fuse with a Flashing LED HQ RIAA PreamplifierGet the Most Out of Your Vinyl Records! Turntable Speed CalibratorAn Arduino-Based 100–120 Hz Strobe Light Generator Elektor Classics: video buffer/repeater Infrared Remote-Controlled DimmerControl Your Halogen or LED Floor Lamp Effortlessly and With Style How to Use switch…case on Strings in C++/Arduino IDE Magnet FinderWith a Simple Hall-Effect Sensor Raspberry Pi Smart Power ButtonA Solution for Raspberry Pi Up to Model 4 Essential Maker TipsProfessional Insights for Everyday Making Practical Projects with the 555 TimerDC Motor Control and Fast Reaction Challenges Basic AC-Load-On MonitorSave Energy with a Simple Device Power Banks in ParallelA Three-Day Continuous Power Solution VFO Up to 15 MHzAn Implementation With Raspberry Pi Pico Violin Tuner with ATtiny202 Elektor Classics: video amplifier for B/W television sets Capacitance Meter20 pF to 600 nF Quasi-Analog Clockwork Mk IITwo LED Rings for Hours and Minutes You Can Do Anything You Want(with the Arduino Ecosystem at Your Side) Neon Lamp Dice Elektor Classics: RTTY calibrator indicator Inspiring Hardware Designs for Your ESPs Elektor Classics: variable 3 A power supply RGB LEDs with Integrated Control CircuitLight with Precision: ICLEDs Set Standards Experiment: Towards a Mixed-Signal Theremin?Blending Modern Time-of-Flight Sensors With the Timeless XR2206 Analog Generator ESP32 Audio Transceiver Board (Part 1)SD Card WAV File Player Demo Infographics: Circuits and Circuit Design 2025 Small Audio MixerA Simple and Versatile Scalable Design Smart Staircase Light TimerSave More Money on the Energy Bill! Smarten Up Your ShuttersControlling Velux Hardware With an ESP32 and MQTT Solid-State Foot WarmerEnergy-Efficient Comfort Is the M5Stamp Fly Quadcopter the Next Tello? Boosting Wi-Fi Range of the ESP32-C3 SuperMiniA Simple and Effective Antenna Mod ZD-8968 Hot-Air Soldering StationA Budget-Friendly Workhorse or Just Hot Air? Parking Sensor TesterFinding Defects in the PDC System of a Car

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This e-book (pdf), a software-only follow up to the best-selling Elektor Visual Studio C# range of books, is aimed at Engineers, Scientists and Enthusiasts who want to learn about the C# language and development environment. It covers steps from installation, the .NET framework and object oriented programming, through to more advanced concepts including database applications, threading and multi-tasking, internet/network communications and writing DLLs. The DirectX chapters also include video capture. The e-book concludes with several chapters on writing Android applications in C# using the Xamarin add-on. This e-book is based on the Visual Studio 2015 development environment and latest C# additions including WPF applications, LINQ queries, Charts and new commands such as await and async. The latest Visual Studio debugging features (PerfTips, Diagnostic Tool window and IntellTrace) are covered. Finally, the Android chapters include GPS, E-mail and SMS applications. Additionally, the e-book provides free on-line access to extensive, well-documented examples — in a try for yourself style — together with links to the author’s videos, guiding you through the necessary steps to get the expected results.

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. USB Measurement AdapterTesting Current and Signal Quality of USB Ports 4...20 mA Current Output for Arduino UnoA Reliable, EMI-Insensitive Current Loop Interface Vacuum Cleaner Automatic ControlKeep Your Tools’ Work Area Clean DDS Generator with ATtiny Opamp-Tester V2New PCB – Now Also Suitable for SMDs 550-mW “Lamp” Audio AmplifierGet the Warm Sound of Vacuum Tubes With Ease Fuse GuardMonitoring a Fuse with a Flashing LED HQ RIAA PreamplifierGet the Most Out of Your Vinyl Records! Turntable Speed CalibratorAn Arduino-Based 100–120 Hz Strobe Light Generator Elektor Classics: video buffer/repeater Infrared Remote-Controlled DimmerControl Your Halogen or LED Floor Lamp Effortlessly and With Style How to Use switch…case on Strings in C++/Arduino IDE Magnet FinderWith a Simple Hall-Effect Sensor Raspberry Pi Smart Power ButtonA Solution for Raspberry Pi Up to Model 4 Essential Maker TipsProfessional Insights for Everyday Making Practical Projects with the 555 TimerDC Motor Control and Fast Reaction Challenges Basic AC-Load-On MonitorSave Energy with a Simple Device Power Banks in ParallelA Three-Day Continuous Power Solution VFO Up to 15 MHzAn Implementation With Raspberry Pi Pico Violin Tuner with ATtiny202 Elektor Classics: video amplifier for B/W television sets Capacitance Meter20 pF to 600 nF Quasi-Analog Clockwork Mk IITwo LED Rings for Hours and Minutes You Can Do Anything You Want(with the Arduino Ecosystem at Your Side) Neon Lamp Dice Elektor Classics: RTTY calibrator indicator Inspiring Hardware Designs for Your ESPs Elektor Classics: variable 3 A power supply RGB LEDs with Integrated Control CircuitLight with Precision: ICLEDs Set Standards Experiment: Towards a Mixed-Signal Theremin?Blending Modern Time-of-Flight Sensors With the Timeless XR2206 Analog Generator ESP32 Audio Transceiver Board (Part 1)SD Card WAV File Player Demo Infographics: Circuits and Circuit Design 2025 Small Audio MixerA Simple and Versatile Scalable Design Smart Staircase Light TimerSave More Money on the Energy Bill! Smarten Up Your ShuttersControlling Velux Hardware With an ESP32 and MQTT Solid-State Foot WarmerEnergy-Efficient Comfort Is the M5Stamp Fly Quadcopter the Next Tello? Boosting Wi-Fi Range of the ESP32-C3 SuperMiniA Simple and Effective Antenna Mod ZD-8968 Hot-Air Soldering StationA Budget-Friendly Workhorse or Just Hot Air? Parking Sensor TesterFinding Defects in the PDC System of a Car

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The Andonstar AD407 Pro microscope is suitable for various applications such as soldering SMDs or repair work. The microscope has a large adjustable 7" LCD display and comes with a remote. Compared to AD407, AD407 Pro offers an extra-high stand, which makes soldering of components even easier. Specifications Screen size 7 inch (17.8 cm) Image sensor 4 MP Video output UHD 2880x2160 (24fps)FHD 1920x1080 (60fps/30fps)HD 1280x720 (120fps) Video format MP4 Magnification Up to 270 times (27 inch HDMI monitor) Photo resolution Max. 12 MP (4032x3024) Photo format JPG Focus range Min. 5 cm Frame Rate Max. 120fps Video interface HDMI Storage microSD card (up to 64 GB) Power source 5 V DC Light source 2 LEDs with the stand Stand size 20 x 18 x 32 cm Included 1x Andonstar AD407 Pro Digital Microscope 1x Metal stand with 2 LEDs 1x UV filter (already assembled in the lens) 1x IR remote 1x Switch cable 1x Power adapter 1x Wrench 2x Metal clips 1x HDMI cable 1x Manual Downloads Manual Model Comparison AD407 AD407 Pro AD409 AD409 Pro-ES Screen size 7 inch (17.8 cm) 7 inch (17.8 cm) 10.1 inch (25.7 cm) 10.1 inch (25.7 cm) Image sensor 4 MP 4 MP 4 MP 4 MP Video output 2160p 2160p 2160p 2160p Interfaces HDMI HDMI USB, HDMI, WiFi USB, HDMI, WiFi Video format MP4 MP4 MP4 MP4 Magnification Up to 270x Up to 270x Up to 300x Up to 300x Photo resolution Max. 4032x3024 Max. 4032x3024 Max. 4032x3024 Max. 4032x3024 Photo format JPG JPG JPG JPG Focus distance Min. 5 cm Min. 5 cm Min. 5 cm Min. 5 cm Frame rate Max. 120f/s Max. 120f/s Max. 120f/s Max. 120f/s Storage microSD card microSD card microSD card microSD card PC support No No Windows Windows Mobile connection No No WiFi + Measurement WiFi + Measurement Power source 5 V DC 5 V DC 5 V DC 5 V DC Light source 2 LEDs with the stand 2 LEDs with the stand 2 LEDs with the stand 2 LEDs with the stand Endoscope No No No Yes Stand size 20 x 12 x 19 cm 20 x 18 x 32 cm 18 x 20 x 30 cm 18 x 20 x 32 cm Weight 1.6 kg 2.1 kg 2.2 kg 2.5 kg

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Examine your circuits with high precision and solder even the smallest SMDs and elements without any hassle. Features Multifunctional HDMI Digital Microscope features Full HD, comfortable headroom, improved ergonomy, multiple output signals with different resolutions. Tilt angle of the wide LCD monitor is adjustable. Comes with remote control. Can be used as stand-alone. Specifications Screen size 7 inch (17.8 cm) Image sensor 4 MP Video output UHD 2880x2160 (24fps)FHD 1920x1080 (60fps/30fps)HD 1280x720 (120fps) Video format MP4 Magnification Up to 270 times (27 inch HDMI monitor) Photo resolution Max. 12 MP (4032x3024) Photo format JPG Focus range Min. 5 cm Frame rate Max. 120fps (under 600 Lux Brightness & HDP120) Video interface HDMI Storage microSD card (up to 32 GB) Power source 5 V DC Light source 2 LEDs with the stand Stand size 20 x 12 x 19 cm Included 1x Andonstar AD407 Digital Microscope 1x Metal stand with 2 LEDs 1x Optical bracket 1x UV filter 1x IR remote 1x Switch cable 1x Power adapter 1x HDMI cable 2x Screws 1x Screwdriver 1x User manual Downloads Manual Model Comparison AD407 AD407 Pro AD409 AD409 Pro-ES Screen size 7 inch (17.8 cm) 7 inch (17.8 cm) 10.1 inch (25.7 cm) 10.1 inch (25.7 cm) Image sensor 4 MP 4 MP 4 MP 4 MP Video output 2160p 2160p 2160p 2160p Interfaces HDMI HDMI USB, HDMI, WiFi USB, HDMI, WiFi Video format MP4 MP4 MP4 MP4 Magnification Up to 270x Up to 270x Up to 300x Up to 300x Photo resolution Max. 4032x3024 Max. 4032x3024 Max. 4032x3024 Max. 4032x3024 Photo format JPG JPG JPG JPG Focus distance Min. 5 cm Min. 5 cm Min. 5 cm Min. 5 cm Frame rate Max. 120f/s Max. 120f/s Max. 120f/s Max. 120f/s Storage microSD card microSD card microSD card microSD card PC support No No Windows Windows Mobile connection No No WiFi + Measurement WiFi + Measurement Power source 5 V DC 5 V DC 5 V DC 5 V DC Light source 2 LEDs with the stand 2 LEDs with the stand 2 LEDs with the stand 2 LEDs with the stand Endoscope No No No Yes Stand size 20 x 12 x 19 cm 20 x 18 x 32 cm 18 x 20 x 30 cm 18 x 20 x 32 cm Weight 1.6 kg 2.1 kg 2.2 kg 2.5 kg

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The Andonstar AD409 Pro-ES is a digital microscope with an extra-high stand that is also equipped with an endoscope. The microscope allows clear observation of the sides of components, the inside of pipes, etc., enabling 360° observation without dead angles. The microscope also has a remote control that allows you to easily switch between the following image modes: two-lens, microscope and endoscope. Features High-quality metal lens and focusing barrel Professional HDMI digital microscope supports multiple output methods Soldering Microscope with Pro Metal Stand Unique UV filter design 8 Levels adjustable LED Lights Convenient Wireless Remote Control Professional Measurement Software Specifications Screen size 10.1 inch (25.7 cm) Image sensor 4 MP Video output UHD 2880x2160 (24fps)FHD 1920x1080 (60fps/30fps)HD 1280x720 (120fps) Video format MP4 Magnification Up to 300 times (27 inch HDMI monitor) Photo resolution Max. 12 MP (4032x3024) Photo format JPG Focus range Min. 5 cm Frame Rate Max. 120fps Video interface HDMI Storage microSD card (up to 64 GB) PC support Windows, PC software with measurement Mobile phone, tablet terminal support Support WiFi connection and measurement Power source 5 V DC Light source 2 LEDs with the stand Endoscope Yes Stand size 18 x 20 x 32 cm Included 1x Andonstar AD409 Pro-ES Digital Microscope 1x Endoscope 1x Metal stand with 2 LEDs 1x UV filter (already assembled in the lens) 1x IR remote 1x Switch cable 1x Power adapter 1x Wrench 2x Metal clips 1x HDMI cable 1x User manual Downloads Manual Software

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Most people are increasingly confronted with the applications of Artificial Intelligence (AI). Music or video ratings, navigation systems, shopping advice, etc. are based on methods that can be attributed to this field. The term Artificial Intelligence was coined in 1956 at an international conference known as the Dartmouth Summer Research Project. One basic approach was to model the functioning of the human brain and to construct advanced computer systems based on this. Soon it should be clear how the human mind works. Transferring it to a machine was considered only a small step. This notion proved to be a bit too optimistic. Nevertheless, the progress of modern AI, or rather its subspecialty called Machine Learning (ML), can no longer be denied. In this book, several different systems will be used to get to know the methods of machine learning in more detail. In addition to the PC, both the Raspberry Pi and the Maixduino will demonstrate their capabilities in the individual projects. In addition to applications such as object and facial recognition, practical systems such as bottle detectors, person counters, or a “talking eye” will also be created. The latter is capable of acoustically describing objects or faces that are detected automatically. For example, if a vehicle is in the field of view of the connected camera, the information 'I see a car!' is output via electronically generated speech. Such devices are highly interesting examples of how, for example, blind or severely visually impaired people can also benefit from AI systems.

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Specifications Bandwidth 100 MHz Sample Rate 100 MS/s Horizontal Scale (s/div) 5ns/div - 1000s/div, step by 1 - 2 - 5 Channel 4 Display 7" color LCD, 800 x 480 pixels Input Coupling DC, AC and GND Vertical Resolution (A/D) Vertical Resolution (A/D) Vertical Sensitivity 5mV/div - 5V/div (at input) Trigger Type Edge, Video Trigger Mode Auto, Normal and Single Waveform Math ＋, －, x, ÷, invert, FFT Fuse 2A, T class, 250 V Dimension (W x H x D) 301 x 152 x 70 mm Weight 1.1 kg Included 1 x SDS1104 1 x Mains power cord 1 x CD Rom 1 x Quickstart Guide 1 x USB Cable 4 x Oscilloscope probe 1 x Probe Adjust For more information, check out the user manual here.

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311 Circuits is the twelfth book in Elektor’s celebrated ‘300’ series. An immense source of inspiration for all electronics enthusiasts and professionals, this book deserves a place not far from the workbench. This book contains circuits, design ideas, tips and tricks from all areas of electronics: audio & video, computers & microcontrollers, radio, hobby & modelling, home & garden, power supplies & batteries, test & measurement, software, not forgetting a section ‘miscellaneous’ for everything that doesn’t fit in one of the other categories. 311 Circuits presents complete solutions for numerous problems, as well as starting points for your own creations. 311 Circuits has been compiled from the 2009, 2010 and 2011 ‘Summer Circuits’ double editions of Elektor magazine. The book is mostly based on readers’ contributions, supplemented by circuits engineered and developed in the Elektor Labs.

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. For Eyes and Ears Video Output with Microcontrollers (1)Composite Video electronica 2022News from the world’s leading electronics trade show ESP32 CameraSo Simple, It Doesn’t Even Have to Use Wi-Fi ATX Power Supply for Raspberry Pi 32 Ω Headphone AmplifierSimple But High-Quality 3-Chip Solution SDR Radio-Controlled clocksFive Time Signals, Six Displays Starting Out in ElectronicsSpecial Diodes From Life's ExperienceMusings on the Quality of Things Reverse-Engineering a Bluetooth Low Energy LED BadgeHow to Control a BLE Device with a Python Script MakePython ESP32 Development KitEverything in a Box THD Measurement with an Oscilloscope and FFTEasily Calculate the Distortion Factor All-Seeing MachinesThe Technology Behind Today’s Industrial Vision Systems Infographics The Evolution of Voice and Audio Control for Electronic Devices WEEF 2022 in Review FFWD electronica 2022 in ReviewInnovators Did Not Fail to Impress The TubeAn Unusual Tube Amplifier Biomaterial in Electronics: Ready or Not Opera Cake Antenna Switch for HackRF OneConnect Up To Eight Antennas To Your SDR Engineering with Arduino and MoreAn Interview with Author Ashwin Pajankar LiDAR Precision GaugeMeasure up to 12 Meters Audio Signals and the ESP32The ESP-ADF Environment in Practice Elektor Fortissimo-100 Power Amplifier Kit Using Light for Sound EffectsLDR-Based Voltage-Controlled 24 dB/oct Synthesizer Filter Elektor High-Power AF AmplifierThe Loudest of Them All! HomeLab ToursA Volumetric Display Made in Canada Err-lectronicsCorrections, Updates and Readers’ Letters Hexadoku

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