The iFixit Essential Electronics Toolkit is what you need for the most essential electronics repairs – like screen and battery swaps – and everything you need for most household DIY fixes. Get started in electronics repair with all the bits and precision tools to handle your most urgent screen breaks and battery swaps. Or simply upgrade your home DIY toolkit with what you need to service door knobs, home appliances, eyeglasses, and more. Included Magnetized Driver Handle Angled Precision Tweezers Spudger Jimmy iFixit Opening Tool iFixit Opening Picks set of 6 Suction Handle Easy-to-Open Magnetized Case Lid with Built-in Sorting Tray Sixteen 4mm Precision Screwdriver Bits Phillips - 000, 00, 0, 1 Pentalobe - P2, P5 Flathead - 1 mm, 2.5 mm, 4 mm Torx - T4, T5 Torx Security - TR6, TR8, TR10 Tri-Point - Y000 SIM Eject Bit Specifications Bit Metal: 6150 Steel Driver Material: Polymer Case Material: ABS Foam: EVA

Read (+) (–)

The short-wave technique has a very particular appeal: It can easily bridge long distances. By reflecting short-wave signals off the conductive layers of the ionosphere, they can be received in places beyond the horizon and therefore can reach anywhere on earth. Although technology is striving for ever higher frequencies, and radio is usually listened to on FM, DAB+, satellite or the Internet, modern means of transmission require extensive infrastructure and are extremely vulnerable. In the event of a global power outage, there is nothing more important than the short-wave. Amateur radio is not only a hobby, it’s also an emergency radio system! Elektor’s SDR-Shield is a versatile shortwave receiver up to 30 MHz. Using an Arduino and the appropriate software, radio stations, morse signals, SSB stations, and digital signals can be received. In this book, successful author and enthusiastic radio amateur, Burkhard Kainka describes the modern practice of software defined radio using the Elektor SDR Shield. He not only imparts a theoretical background but also explains numerous open source software tools.

Read (+) (–)

Features Advanced DDS technology, up to 250 MHz frequency output 1.25 GS/s sampling rate, and 1 μHz frequency resolution Up to 1M arbitrary waveform length Vertical resolution: 14 bits Comprehensive waveform output: 6 groups waveforms, and 152 group built-in arbitrary waveforms Comprehensive modulation options: AM, FM, PM, FSK, 3FSK, 4FSK, PSK, OSK, ASK, BPSK, PWM, sweep, and burst High-accuracy frequency counter integrated, ranging from 100MHz till 200MHz SCPI and LabVIEW supported 8-inch 800 x 600 pixels touch screen LCD Specifications XDG3102 Channel 2 Frequency Output 100MHz Sample Rate 1.25GSa/s Vertical Resolution 14 bits Waveform Standard Waveform sine, square, pulse, ramp, noise, and harmonic Arbitrary Waveform exponential rise, exponential fall, sin(x)/x, step wave, and others, total of 150 built-in waveforms, and user-defined arbitrary waveform Frequency (resolution 1μHz) Sine 1μHz - 100MHz Square 1μHz - 40MHz Pulse 1μHz - 25MHz Ramp 1μHz - 5MHz Harmonic 1μHz - 50MHz Noise 120MHz (-3dB, typical) Arbitrary Waveform built-in waveform: 1uHz - 15MHzuser-defined waveform: 1uHz - 50MHz Accuracy ±1ppm, 0°C - 40°C Amplitude Amplitude (50Ω) 1mVpp - 10Vpp (≤40MHz); 1mVpp - 5Vpp (≤80MHz) 1mVpp - 2.5Vpp (≤120MHz); 1mVpp - 1Vpp (≤250MHz) Amplitude(high impedance) 2mVpp - 20Vpp (≤40MHz); 2mVpp - 10Vpp (≤80MHz); 2mVpp - 5Vpp (≤120MHz); 2mVpp - 2Vpp (≤250MHz) Resolution 1mV or 4 digits DC Offset Range (50Ω) ±(5 Vpk - Amplitude Vpp/2) Range (high-Z, open circuit) ±(10 Vpk - Amplitude Vpp/2) Accuracy ±(1% of |setting| + 1mV + Amplitude Vpp x 0.5%) Resolution 1mV or 4 digits Load Impedance 50Ω (typical) Accuracy ±(1% of setting + 1 mVpp) (typical, 1kHz sine, 0V offset) Sine Wave Spectrum Purity Harmonic Distortion Typical (0dB) DC - 1MHz: <-65dBc 1MHz - 10MHz: <-60dBc 10MHz - 120MHz: <-50dBc 120MHz - 200MHz: <-45dBc Total Harmonic Distortion ＜0.05 %, 10 Hz to 20 kHz, 1 Vpp Spurious (non-harmonic), Typical (0dB) ≤10MHz: <-70dBc >10MHz: <-70dBc + 6dB/ octave Phase Noise Typical (0 dBm, 10 kHz deviation) 10MHz: ≤-110dBc/Hz Square Rise/Fall Time <5ns Overshoot <3% Duty Cycle 50.0% (fixed) Jitter (rms) 300ps + 100ppm Pulse Pulse Width 12ns - 996875s Leading/Trailing Edge Time ≧7ns Overshoot <3% Jitter (rms) 300ps + 100ppm Ramp Linearity ≤1% of peak output (typical, 1kHz, 1 Vpp, 50% symmetry) Symmetry 0% to 100% Harmonic Harmonic Order ≤16 Harmonic Type even, odd, all, user Harmonic Amplitude could be set for all the harmonics Harmonic Phase Arbitrary Waveform Length 2 points - 1M points Vertical Resolution 14 bits Minimum Rise/Fall Time <7ns Jitter (rms) 3ns Modulation Type AM, FM, PM, PWM, FSK, 3FSK, 4FSK, PSK, OSK, ASK, BPSK, sweep, and burst AM Carrier Waveform sine, square, ramp, and arbitrary (except DC) Source internal / external Modulating Waveform sine, square, ramp, noise, and arbitrary Depth 0.0% - 100.0% Modulating Frequency 2 mHz - 100 kHz FM Carrier Waveform sine, square, ramp, and arbitrary (except DC) Source internal / external Modulating Waveform sine, square, ramp, noise, and arbitrary Modulating Frequency 2 mHz - 100 kHz PM Carrier Waveform sine, square, ramp, and arbitrary (except DC) Source internal / external Modulating Waveform sine, square, ramp, noise, and arbitrary Phase Deviation 0° - 180° Modulating Frequency 2 mHz - 100 kHz PWM Carrier Waveform pulse Source internal / external Modulating Waveform sine, square, ramp, noise, and arbitrary Width Deviation 0 ~ minimum (pulse duty ratio, 100% - pulse duty ratio) Modulating Frequency 2 mHz - 100 kHz FSK / 3FSK / 4FSK Carrier Waveform sine, square, ramp, and arbitrary (except DC) Source internal / external Modulating Waveform square with 50% duty cycle Key Frequency 2 mHz - 1MHz PSK Carrier Waveform sine, square, ramp, and arbitrary (except DC) Source internal / external Modulating Waveform square with 50% duty cycle Key Frequency 2 mHz - 1MHz OSK Carrier Waveform sine, square, ramp, and arbitrary (except DC) Source internal Oscillation Time square with 50% duty cycle Key Frequency 2 mHz - 1MHz ASK Carrier Waveform sine, square, ramp, and arbitrary (except DC) Source internal / external Modulating Waveform square with 50% duty cycle Key Frequency 2 mHz - 1MHz BPSK Carrier Waveform sine, square, ramp, and arbitrary (except DC) Source internal Modulating Waveform square with 50% duty cycle Key Frequency 2 mHz - 1MHz Sweep Carrier Waveform sine, square, ramp, and arbitrary (except DC) Type linear, and log Direction up, and down Sweep Time 1 ms to 500s, ± 0.1% Trigger Source internal, external, and manual Burst Carrier Waveform sine, square, ramp, pulse, and arbitrary (except DC) Burst Count 1 to 50,000 period, infinite, gating Internal Period 10 ns - 500 s Gated Source external trigger Frequency Counter Function frequency period, +width, -width, +duty, and -duty Frequency Range 100 MHz - 200 MHz Frequency Resolution 7 digits Input / Output Display 8”800 x 600 pixels touch screen LCD Type frequency counter, external modulation input,external trigger input,external reference clock input / output Communication Interface USB Host, USB Device, and LAN Dimension 340 x 177 x 90 mm Weight 2.50 kg

Read (+) (–)

Menno van der Veen is well known for his research publications on tube amplifiers used in audio systems. In this book he describes one of his research projects which focuses on the question of whether full compensation for distortion in tubes and output transformers is possible. In the past, a variety of techniques have been developed. One of them has largely been forgotten: trans-conductance, which means converting current into voltage or voltage into current. Menno van der Veen has breathed new life into this technique with his research project titled “Trans”. This book discusses all aspects of this method and discusses its pitfalls. These pitfalls are addressed one by one. The end result is a set of stringent requirements for Trans amplifiers. Armed with these requirements, Menno then develops new Trans amplifiers, starting with Transie 1 and Transie 2. These DC-coupled, single-ended tube amplifiers have unusually good characteristics and are suitable for hobbyist construction. Next the Trans principle is applied to amplifiers with higher output power. A trial-and-error process ultimately leads to the Vanderveen Trans 30 amplifier, which optimizes the features of Trans. The characteristics of this amplifier are so special and unique that Menno believes he has struck gold. To ensure that variations in tube characteristics cannot interfere with optimal Trans behavior, Menno makes use of simulations and comparison with other amplifier types. This book reads like an adventure story, but it is much more – it is an account of solid research into new ways to achieve optimal audio reproduction.

Read (+) (–)

ARM Cortex-M Embedded Design from 0 to 1 Hobbyists can mash together amazing functional systems using platforms like Arduino or Raspberry Pi, but it is imperative that engineers and product designers understand the foundational knowledge of embedded design. There are very few resources available that describe the thinking, strategies, and processes to take an idea through hardware design and low-level driver development, and successfully build a complete embedded system. Many engineers end up learning the hard way, or never really learn at all. ARM processors are essentially ubiquitous in embedded systems. Design engineers building novel devices must understand the fundamentals of these systems and be able to break down large, complicated ideas into manageable pieces. Successful product development means traversing a huge amount of documentation to understand how to accomplish what you need, then put everything together to create a robust system that will reliably operate and be maintainable for years to come. This book is a case study in embedded design including discussion of the hardware, processor initialization, low‑level driver development, and application interface design for a product. Though we describe this through a specific application of a Cortex-M3 development board, our mission is to help the reader build foundational skills critical to being an excellent product developer. The completed development board is available to maximize the impact of this book, and the working platform that you create can then be used as a base for further development and learning. The Embedded in Embedded program is about teaching fundamental skill sets to help engineers build a solid foundation of knowledge that can be applied in any design environment. With nearly 20 years of experience in the industry, the author communicates the critical skill development that is demanded by companies and essential to successful design. This book is as much about building a great design process, critical thinking, and even social considerations important to developers as it is about technical hardware and firmware design. Downloads EiE Software Archive (200 MB) IAR ARM 8.10.1 (Recommended IDE version to use) (1.2 GB) IAR ARM 7.20.1 (Optional IDE version to use) (600 MB)

Read (+) (–)

59 Experiments with Arduino IDE and Python The main aim of this book is to teach the Arduino IDE and MicroPython programming languages in ESP32 based projects, using the highly popular ESP32 DevKitC development board. Many simple, basic, and intermediate level projects are provided in the book using the Arduino IDE with ESP32 DevKitC. All projects have been tested and work. Block diagrams, circuit diagrams, and complete program listings of all projects are given with explanations. In addition, several projects are provided for programming the ESP32 DevKitC using MicroPython. The projects provided in this book are designed to teach the following features of the ESP32 processor: GPIOs Touch sensors External interrupts Timer interrupts I²C and I²S SPI PWM ADC DAC UART Hall sensor Temperature sensor Infrared controller Reading and writing to SD card Reading and writing to flash memory RTC timer Chip ID Security and encryption Wi-Fi and network programming Bluetooth BLE programming Communication mobile devices Low power design ESP-IDF programming The projects have been organized with increasing levels of difficulty. Readers are encouraged to tackle the projects in the order given. A specially prepared hardware kit (SKU 18305) is available from Elektor. With the help of this hardware, it should be easy and fun to build the projects in this book.

Read (+) (–)

The PC has long-time outgrown its function as a pure computer and has become an all-purpose machine. This book is targeted towards those people that want to control existing or self-built hardware from their computer. Using Visual Basic as Rapid Application Development tool we will take you on a journey to unlock the world beyond the connectors of the PC. After familiarising yourself with Visual Basic, its development environment and the toolset it offers, items such as serial communications, printer ports, bit-banging, protocol emulation, ISA, USB and Ethernet interfacing and the remote control of test-equipment over the GPIB bus, are covered in extent. Each topic is accompanied by clear, ready to run code, and where necessary, schematics are provided that will get your projects up to speed in no time. This book will show you advanced things like: using tools like Debug to find hardware addresses, setting up remote communication using TCP/IP and UDP sockets and even writing your own internet servers. Or how about connecting your own block of hardware over USB or Ethernet and controlling it from Visual Basic. Other things like internet-program communication, DDE and the new graphics interface of Windows XP are covered as well. All examples are ready to compile using Visual Basic 5.0, 6.0, NET or 2005. Extensive coverage is given on the differences between what could be called Visual Basic Classic and Visual basic .NET / 2005.

Read (+) (–)

The minimalist design and the spring loaded test needle makes it possible to simultaneously measure on fine pitch components and nearby signals. The probe is steady but yet flexible made for instant measurements or total hands-free operations together with your multimeter, logic analyzer or preferred tool. The dual pin header connector fits directly on a 2.54 mm (0.100”) connector. The SP10 comes with a powerful magnet in the base, as for all PCBite probes and holders which makes the probe easy to place and reposition. Included 4x PCBite holder 1x Large base plate (A4) 4x PCBite probe with pin tipped test needle 4x Extra crown tipped test needle 1x Set of yellow insulation washers 5x Dupont to dupont test wire 2x Banana to dupont test wire 1x Microfiber cloth Downloads User Guide

Read (+) (–)

The OWON SDS1102 is an affordable benchtop digital oscilloscope that combines solid performance with essential measurement features. This 2-channel oscilloscope offers a 100 MHz bandwidth, a 1 GS/s sampling rate, a 7-inch LCD display, and a 10 kpts memory depth, making it a practical choice for everyday electronics testing, troubleshooting, and education. The SDS1102 features a simplified trigger system with level and edge triggering, making it easy to capture and analyze common signals. It is designed for applications that do not require deep memory or advanced trigger functions, offering a straightforward and cost-effective solution for basic signal analysis. Features Bandwidth: 100 MHz 2 channels Sample rate: 1 GS/s Ultra-thin body 7-inch high-res LCD SCPI and LabVIEW supported Specifications Bandwidth 100 MHz Horizontal Scale (s/div) 5 ns/div – 1000 s/div Channel 2 Vertical Sensitivity 5 mV/div – 5 V/div (at input) DC Gain Accuracy 3% Vertical Resolution (A/D) 8 bits (2 channels simultaneously) Input Input Impedance 1 MΩ, 10 pF Input Coupling AC, DC, GND Max Input Voltage ±400 V, CATI, CATII Passive probes х1; х10 Probe Attenuation Factor х1; х10; х100; х1000 Trigger System Trigger Mode Auto, Normal, Single Trigger Type Edge, Video Edge Trigger Source CH1, CH2 Video Trigger Sampling Type Real-time Sample Rate 1 GS/s Equivalent Sample Rate No Wavelength 10K pts Interpolation sin(x)/x Measurement and Mathematical Treatment System Automatic Measurement Vpp, Vavg, RMS, Frequency, Period, Vmax, Vmin, Vtop, Vbase, Width, Overshoot, Pre-shootRise time, Fall time, +Width, -Width, +Duty, -Duty, Delay A→B, Delay A→B, area, cycle area Math Functions Addition, Subtraction, Multiplication, Division, FFT General Characteristics Display type 7" color LCD Display Resolution 800 x 480 Power 100-240 V, 45-440 Hz, <15 W Dimensions 301 x 70 x 152 mm Weight 1.1 kg Included 1x OWON SDS1102 Oscilloscope 2x Oscilloscope probes 1x Probe adjust 1x Mains power cord 1x USB cable 1x CD-Rom 1x Quick guide Downloads Quick Guide Manual PC Software SCPI Commands

Read (+) (–)

Features Data-logger & Multimeter & Thermometer 3 (5/6) digits True RMS test supported BLE 4.0 wireless transmission, more stable, less power consumption Chart and Diagram mode, to analyze your data Supports NCV Voice Broadcast simplifies testing Flashlight function Built-in offline recording function Supports Android, iOS Included Test leads K-type thermocouple 9 V Battery Bolt driver Crocodile clip Quick guide

Read (+) (–)

The Siglent SDS1204X-E is a powerful 200 MHz four-channel oscilloscope that is built on the same platform as the very popular SDS1202X-E but with several significant improvements, including two 1 GSa/s ADCs and two 14 Mpt memory modules. Waveform capture rates are up to 100,000 wfms/s in normal mode and 400,000 wfms/s in sequence mode. The SDS1000X-E scopes feature a large 7” 256-level color display with intensity grading and color temperature features. Specifications Bandwidth 200 MHz Sampling Rate (Max.) 1 GSa/s Channels 2CH+EXT4CH Memory Depth (Max.) 7 Mpts/CH (not interleave mode); 14 Mpts/CH (interleave mode) Waveform Capture Rate (Max.) 100,000 wfms/s (normal mode), 400,000 wfms/s (sequence mode) Trigger Types Edge, Slope, Pulse width, Window, Runt, Interval, Dropout, Pattern, Video Serial Trigger (Standard) I²C, SPI, UART/RS232, CAN, LIN Decode Type (Standard) I²C, SPI, UART/RS232, CAN, LIN 16 Digital Channels (four channel series only, option) Maximum waveform capture rate up to 1 GSa/s, Record length up to 14 Mpts/CH USB AWG module (four channel series only, option) One channel, 25 MHz, sample rate of 125 MHz, wave length of 16 kpts Bode plot ( four channel series only) Minimum start frequency of 10 Hz, minimum scan bandwith of 500 Hz, maximum scan bandwidth of 120 MHz (dependent on Oscilloscope and AWG bandwidth), 500 maximum scan frequency points USB WIFI adapter (four channel series only, option) 802.11b/g/b, WPA-PSK, the adapter must be supplied by Siglent to ensure proper functioning Downloads Datasheet Manual Programming Guide

Read (+) (–)

Arduinonext is an initiative powered by an electronics and microcontrollers specialist team aiming to help all those who are entering in the technology world, using the well-known Arduino platform to take the next step in electronics. We strive to bring you the necessary knowledge and experience for developing your own electronics applications; interacting with environment; measuring physical parameters; processing them and performing the necessary control actions. This is the first title in the 'Hands-On' series in which Arduino platform co-founder, David Cuartielles, introduces board programming, and demonstrates the making of an 8-bit Sound Generator.

Read (+) (–)

The author, Johan Basse Bergqvist, is an engineer, a musician, and an audiophile with a knack for building projects that produce the desired results. The combination of these skills leads to a uniquely valuable perspective on audio design that is routinely reflected in the book and passed on to the readers. Several design projects are provided, 40 in total. The designs are explained, and the unique features or methods he uses are described in further detail. Each design includes detailed schematics and a complete parts list. Many of the projects also include layout documentation in the form of CAD photos of the PCB layouts. The range of projects is very diverse and includes something that will appeal to everyone. Stereo amplifiers, guitar and bass amplifiers, preamplifiers for phono, and microphones are all covered. Several variants for each type are included, and the power amplifier designs range from a few watts to several hundred watts, which meet almost any power level you might tackle.

Read (+) (–)

This book is for people who want to understand how AC drives (also known as inverter drives) work and how they are used in industry by showing mainly the practical design and application of drives. The key principles of power electronics are described and presented in a simple way, as are the basics of both DC and AC motors. The different parts of an AC drive are explained, together with the theoretical background and the practical design issues such as cooling and protection. An important part of the book gives details of the features and functions often found in AC drives and gives practical advice on how and where to use these. Also described is future drive technology, including a matrix inverter. The mathematics is kept to an essential minimum. Some basic understanding of mechanical and electrical theory is presumed, and a basic knowledge of single andthree phase AC systems would be useful. Anyone who uses or installs drives, or is just interested in how these powerful electronic products operate and control modern industry, will find this book fascinating and informative.

Read (+) (–)

High-quality soldering with the most important tools and consumables, ideal for universal soldering applications. Features Power unit, 1 channel 1-channel Soldering Station digital 90 W (95 W) WTP 90: The soldering iron for universal use with power response tips. Tip family XNT & THM (high mass tips) Lock function Specifications Dimensions W x D x H (mm): 149 x 138 x 101 Dimensions W x D x H (inch): 5.87 x 5.43 x 3.98 Weight (ca) in kg: 1.9 Channels: 1 Voltage: 230 V, 50/60 Hz Heating output: 90 W (95 W) Temperature accuracy °C: ±9 Display: Backlit LCD Temperature range: Adjustable from 50°C - 450°C (150°F - 850°C)Adjustable temperature range varies among tools Temperature stability °C: ±2 Temperature accuracy °F: ±17 Temperature stability °F: ±4 Temperature range (depends on tool) °C: 100-450 Temperature range (depends on tool) °F: 150-850 Equipotential balance: yes Fuse: 0,5 A WT compatible: yes ESD-safe: yes Power cord: EMEA

Read (+) (–)

High-quality soldering station with the most important tools and consumables, ideal for universal soldering applications. Features 1-Channel Power Unit, digital, 70 W Power unit, 1 channel with soldering iron WEP 70 and safety rest PH 70 70W solder iron with ergonomic handle and providing toolless tip change ESD safe station, iron and heat-resistant silicon cable for safe handling Using ET soldering tips Standby mode and auto setback conserves energy, protects equipment Password-protected to preserve settings Specifications Dimensions: 150 x 120 x 98 mm Weight: 1.4 kg Display: Digital LC Display Temperature range: Adjustable from 100°C - 450°C (200°F - 850°F) Voltage: 230 V Channels: 1 Temperature range (depends on tool) °C: 100-450 Temperature range (depends on tool) °F: 200-850 Temperature accuracy °C: Average tip temperature can be „offset“ to +/- 5°C at idle with no load Temperature accuracy °F: Average tip temperature can be „offset“ to +/- 9°F at idle with no load Temperature stability °C: ±6 Temperature stability °F: ±10 Heat-up time (ca) in seconds (50-350°C / 120-660°F): 28 sec. Heating output: 85 W

Read (+) (–)

ANT500 from Great Scott Gadgets is a telescopic antenna designed for operation from 75 MHz to 1 GHz. Its total length is configurable from 20 cm to 88 cm. ANT500 is constructed of stainless steel and features an SMA male connector, rotating shaft, and adjustable elbow. ANT500 is a 50 ohm general purpose antenna. It is the perfect first antenna for use with HackRF One/Pro.

Read (+) (–)

This book is about the Raspberry Pi 3 computer and its use in various control and monitoring applications. The book explains in simple terms and with tested and working example projects, how to configure the Raspberry Pi 3 computer, how to install and use the Linux operating system, and how to write hardware based applications programs using the Python programming language. The nice feature of this book is that it covers many Raspberry Pi 3 based hardware projects using the latest hardware modules such as the Sense HAT, Swiss Pi, MotoPi, Camera module, and many other state of the art analog and digital sensors. An important feature of the Raspberry Pi 3 is that it contains on-board Bluetooth and Wi-Fi modules. Example projects are given in the book on using the Wi-Fi and the Bluetooth modules to show how real-data can be sent to the Cloud using the Wi-Fi module, and also how to communicate with an Android based mobile phone using the Bluetooth module. The book is ideal for self-study, and is intended for electronic/electrical engineering students, practising engineers, research students, and for hobbyists. It is recommended that the book should be followed in the given Chapter order. Over 30 projects are given in the book. All the projects in the book are based on the Python programming language and they have been fully tested. Full program listings of every project are given in the book with comments and full descriptions. Experienced programmers should find it easy to modify and update the programs to suit their needs. The following sub-headings are given for each project to make it as easy as possible for the readers to follow the projects: Project title Description Aim of the project Raspberry Pi type Block diagram Circuit diagram Program listing

Read (+) (–)

The Andonstar ADSM302 is a versatile digital microscope with an integrated 5-inch LCD display and HDMI output for crystal-clear views in Full HD (1080p). With a 3-megapixel sensor, up to ~560x magnification, and two adjustable LED lights, it reveals the finest details – ideal for PCB inspections, soldering work, jewelry or insect analysis. Features 5" adjustable LCD monitor with adjustable tilt angle High resolution video & photo capture Wide table with comfortable headroom Heavy-weight stable metal stand Tall lifting stand (26 cm) Smooth adjustment wheels for focus and height Buttons on the monitor + remote control AV, USB, HDMI outputs SD card storage <32 GB Specifications Image sensor 3 Megapixels HD Sensor Video output 1080p Full HD (via HDMI)720p (via PC) Video format Real time play via HDMI w/o recordingMJPEG recording via PC/Mac Software Magnification Up to 560 times (HDMI monitor 22") Photo resolution 12M (see pixel formats in following table) Photo format JPEG Focus range 5 to 22 cm Frame rate Up to 30 f/s under 600 Lux Brightness Video-output interface HDMI/AV Storage microSD card, up to 32 GB PC support Windows XP/7/8/10PC software with measurementMacOS successfully tested under OSX with OBSsee video below Power source 5 V DC Light source 2x LED with the stand Screen size 5 inch (12.7 cm) Stand size 20 x 12 x 26.5 cm Resolution Captured Photos 4032 x 3024 3648 x 2736 3264 x 2448 2592 x 1944 2048 x 1536 640 x 480 1920 x 1080 1280 x 960 1280 x 720* Videos 1920 x 1080 640 x 480* * (USB with software) Included 1x Andonstar ADSM302 digital microscope 1x Metal stand with 2 LEDs 1x USB cable 1x HDMI cable 1x Adapter 1x AI remote 1x Instructions Downloads Manual Software

Read (+) (–)

All you need to know about good acoustics and sound systems in performance and worship spaces! Everyone knows that the ability to hear music in balance and to understand speech is essential in any space used for performance or worship. Unfortunately, in the early 21st century, we find that buildings with good acoustics are the exception rather than the rule. Much of the fault leading to this result can be traced to the widespread perception that acoustics is a black art. In fact, scientific acoustics as developed in the last century is a well-defined engineering practice that can lead to predictable excellent results. A basic, non-engineering understanding of acoustics will help building owners, theater managers, ministers and teachers of music, performers, and other professionals to achieve their goals of excellent acoustics in venues with which they work. Performers having a basic understanding of acoustics will be able to make the most of the acoustics of the venue in which they perform. This book helps those responsible for providing good acoustics in performance and worship spaces to understand the variables and choices entailed in proper acoustic design for performance and worship. Practicing acoustical consultants will find the book a useful reference as well. The level of presentation is comfortable and straightforward without being simplistic. If correct acoustical principles are incorporated into the design, renovation, and maintenance of performance and worship venues, good acoustics will be the result.

Read (+) (–)