This versatile digital microscope covers a wide magnification range (18-720x, 1560-2040x, 2760-4080x) with 3 lenses for hobby, industrial and biologic purposes. Lens A (18-720x) can be used to observe whole coins or parts, circuit boards, plants, stones, etc. With lens B (1560-2040x) and C (2760-4080x) you can observe biological slides. Specifications Magnification Lens A 18-720 Focus range 12-320 mm Lens B 1560-2040 Focus range 7-8 mm Lens C 2760-4080 Focus range 3-4 mm Screen size 10 inch (25.7 cm) Video resolution (max.) UHD 2880x2160 (24fps) Video format MP4 Photo format JPG Photo resolution 5600x2400 (with interpolation) Frame rate Max. 120fps HDMI output Yes (only HDMI monitor displays) PC output Yes Power supply USB 5 V DC (not included) Stand material Pro Plastic Stand size 20 x 19 x 30 cm Included 1x Andonstar AD249S-P Digital Microscope 1x Pro plastic stand 1x Lens A (fixed) 1x Lens (B & C) 1x USB cable 1x HDMI cable 1x Remote control 1x Dimmer cable 3x Backdrop board 1x Slides kit 1x 32 GB microSD card 1x Observation box 1x Tweezers 1x Screw driver 1x User manual

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The M12 mount lens (12 MP, 2.7 mm) is ideal for use with the Raspberry Pi HQ Camera Module, offering sharp and detailed imaging for a wide range of applications.

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The RGB matrix module is equipped with 4096 LEDs and is characterized by a particularly small grid size of only 3mm. This makes it ideal for pictorial representations. Video sequences can also be displayed. The module is supplied with the necessary cables. It is perfectly suited in combinations with single board computers like the Raspberry Pi, Arduino, BBC Microbit and many more. Specifications Display RGB-LED Resolution 64 x 64 Amount of LED 4096 LEDs LED Size 3 mm Pitch Supply Voltage 5 V Max. Power Input 40 W Control 1/32 Scan Operating Temperature -20~55°C Viewing Angle 140° Pixel Density 111111 Pixel/m² Dimensions 192 x 192 x 14 mm Weight 246 g Items Shipped LED-Matrix, Kabel Downloads Datasheet Manual

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The RP2040 contains two ARM Cortex-M0+ processors (up to 133 MHz) and features: 264 kB of embedded SRAM in six banks 6 dedicated IO for SPI Flash (supporting XIP) 30 multifunction GPIO: Dedicated hardware for commonly used peripherals Programmable IO for extended peripheral support Four 12-bit ADC channels with internal temperature sensor (up to 0.5 MSa/s) USB 1.1 Host/Device functionality The RP2040 is supported with C/C++ and MicroPython cross-platform development environments, including easy access to runtime debugging. It has a UF2 boot and floating-point routines baked into the chip. While the chip has a large internal RAM, the board includes an additional 16 MB of external QSPI flash memory to store program code. Features Raspberry Pi Foundation's RP2040 microcontroller 16MB QSPI Flash Memory JTAG PTH Pins Thing Plus (or Feather) Form-Factor: 18x Multifunctional GPIO Pins Four available 12-bit ADC channels with an internal temperature sensor (500 kSa/s) Up to eight 2-channel PWM Up to two UARTs Up to two I²C buses Up to two SPI buses USB-C Connector: USB 1.1 Host/Device functionality 2-pin JST Connector for a LiPo Battery (not included): 500 mA charging circuit Qwiic Connector Buttons: Boot Reset LEDs: PWR - Red 3.3 V power indicator CHG - Yellow battery charging indicator 25 - Blue status/test LED (GPIO 25) WS2812 - Addressable RGB LED (GPIO 08) Four Mounting Holes: 4-40 screw compatible Dimensions: 2.3' x 0.9' RP2040 Features Dual Cortex M0+ processors, up to 133 MHz 264 kB of embedded SRAM in 6 banks 6 dedicated IO for QSPI flash, supporting execute in place (XIP) 30 programmable IO for extended peripheral support SWD interface Timer with 4 alarms Real-time counter (RTC) USB 1.1 Host/Device functionality Supported programming languages MicroPython C/C++

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The FNIRSI DSO153 is a highly practical and cost-effective handheld oscilloscope with a real-time sampling rate of 5 MSa/s, 1 MHz bandwidth, and complete triggering function (single, normal, auto). It can be used freely for both periodic analog signals and non-periodic digital signals, and can measure up to ±400 V voltage with an efficient one-click AUTO, which can display the measured waveform without complicated adjustments. Additionally, it features a function signal generator capable of outputting 14 types of signals (10 KHz). Equipped with a 2.8-inch 320x240 resolution HD LCD screen and a built-in 1000 mAh high-quality lithium battery, it can be used for about 4 hours when fully charged. Features 2.8-inch HD LCD display with 320x240 Resolution Portable Pocket Oscilloscope with Signal Generator Lightweight, mini-sized, assembled Faster sampling: 5 MS/s, 1 MHz bandwidth Versatile triggering: Single, Normal, Auto User-friendly: One-button setup Extended battery: 1000 mAh, 4 hours Multi-functionality: 10 KHz Sine Wave Generator Specifications Bandwidth 1 MHz Sampling rate 5 MSa/s Vertical Sensitivity 10mV/Div – 20V/Div Time Base Range 500ns/Div – 20s/Div Voltage Range X1: ±40 V (Vpp: 80 V)X10: ±400 V (Vpp: 800 V) Trigger Method Auto / Normal / Single Coupling Method AC/DC Frequency Range 0-10 KHz Duty Cycle Range 0-100% Amplitude Range 0.1-3.3 V Display 2.8 inches (Resolution: 320 x 240) USB Charging 5 V/1 A Lithium Battery Capacity 1000 mAh Dimensions 99 x 68.3 x 19.5 mm Weight 100 g Included 1x FNIRSI DSO153 Oscilloscope 1x P6100 oscilloscope probe 1x Adapter 1x Alligator clip probe 1x USB charging cable 1x Lanyard 1x Manual Downloads Manual Firmware V1.1.8

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This multi-purpose tool offers an excellent all round solution, ideal for holding big size PCBs and desoldering work, etc. Features The arms of the repair station can move up and down conveniently, easy for operation. The adjustable parts are made of the same material for microscope, with high quality, perfect stability and precision. The rubber feet can move in all directions, ensuring the operation platform is always on a flat surface. Suitable for desoldering BGA ICs. Specifications Rough adjusting range in height 0∼230 mm Precise adjusting range in height 0∼60 mm Max. holding size of PCB 250 mm (length or width) Min. holding size of PCB 20 mm (length or width)

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Spencer is a DIY voice assistant that will teach you about AI, voice recognition, IoT, and speech synthesis. Features Ask about the weather forecast for your area Hear a joke Ask him to sing you a song Set a stopwatch Make Spencer display custom animations Laugh at his corny popular culture references Included Spencer’s circuit board that includes a pre-soldered 144-pixel LED grid The brain board – does smart stuff and includes a dual-core processor, a 16 MB flash memory chip, and power-management circuitry Acrylic casing – this protects Spencer’s innards from the outside world A big red button Various smaller components such as resistors and pushbuttons Micro USB cable for powering your Spencer 5W Speaker Instruction booklet – ready for your offline knowledge consumption Here you can find the assembly guide!

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These high-precision, anti-static tweezers with black ESD coating can be used in electronics for placing SMD components when soldering and for repairing smartwatches, smartphones, tablets, PCs etc. It is deal for picking up small components in hard to reach places. Specifications Length 110 mm Width 9 mm

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The BSIDE U0 digital clamp meter multimeter is a versatile tool designed for measuring AC current, AC/DC voltage, and resistance with high accuracy. Equipped with features like an on/off buzzer, alarm alert, automatic shutdown, and V-alert detection, it ensures user safety and ease of operation. Compact, precise, and user-friendly, it’s an ideal troubleshooting tool for quickly and safely addressing electrical issues in vehicles, industrial settings, and home environments. This multimeter is widely used across various fields, including electric power, telecommunications, railways, construction, oil and gas, metering, scientific research, education, as well as industrial and mining enterprises. Specifications Function Range Accuracy DC Voltage 0.800~610 V ±(0.8%+3) AC Voltage 0.800~610 V ±(1.0%+3) AC Current 1~100 A ±(2.5%+5) DC Current 1~100 A ±(2.5%+5) Resistance 5~40 MΩ ±(1.2%+3) Display 4000 Counts Battery Built-in 3.7 V 4000 mAh Lithium battery Automatic Shutdown After 15 minutes of inactivity LED Light Yes Dimensions 192 x 36 x 30 mm Weight 100 g Included 1x BSIDE U0 Clamp Meter 2x Test leads 1x USB cable 1x Manual

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Get started with microcontroller based electronics This Arduino-compatible bundle contains the Motherboard, Digitiser, Sensor Array and RGB Matrix. With these 4 boards you have everything you need to build a clock, score counter, timer, task reminder, thermometer, humidity display, sound meter, light meter, clap trigger, colored bar graph display, animated alarm, and much more! The Motherboard has a built in real time clock module that keeps time even when unplugged. The Digitiser can display 4 digits or characters and includes 2 buttons and a potentiometer to let you control what’s being displayed, or the brightness of the display. The Sensor Array can read temperature, relative humidity, sound and light, with an SD card slot for data recording. The RGB Matrix has 16 RGB LEDs that are controlled through shift registers, so only use 3 or 4 pins of the Motherboard. Motherboard The Motherboard is an Arduino-compatible microcontroller breakout board designed around the ATmega328P. The board comes in a solder-it-yourself kit with all the components you need to get started with microcontroller based electronics. All other boards connect to this. Based on the ATmega328P Arduino compatible On-Board RTC (Real Time Clock) FTDI Header for easy programming Bluetooth Header Terminal Block Connections Digitiser The Digitiser is a versatile display and input board. It let’s you visualise your data. Show your sensor information, clock digits, or even keep score for your favourite card game. The Digitiser also includes some buttons and a knob to let you take control. 4x 7-Segment Displays Uses 595 Shift Registers 2 Switches and a Potentiometer 4 colored 'Mode' LEDs Chainable with other 595 Boards Terminal Block Connections Sensor Array As the name suggests, the Sensor Array is an array of sensors. Measure temperature and relative humidity via the DHT11, light via the light dependant resistor, and sound via the microphone and amplifier circuit. Then you can log the data using the on-board SD card slot. DHT11 Temp & Humidity Sensor Microphone and Amplifier Circuit Light Dependent Resistor MicroSD Slot for Saving Data Logic Level Converter Circuit Terminal Block Connections RGB Matrix Add color to your project by controlling 16 red, 16 green and 16 blue LEDs with just 3 pins of your microcontroller. The RGB Matrix uses shift registers, a matrix and switching transistors, so there’s plenty to learn and explore. 4x4 (16) RGB LEDs Uses 595 Shift Registers Chainable with other 595 Boards Transistor Switches Terminal Block Connections Downloads (Manuals) Motherboard Digitiser Sensor Array RGB Matrix

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Celebrating the Arduino Uno with a miniaturized limited edition The world's favorite development board has gone mini. Everything in this version of the Arduino Uno is unique. Black and gold, finishing, elegant design and packaging, all delivered to the highest standard. A little jewel to celebrate the Arduino community and what we’ve been doing together for all these years. Each item is unique and numbered on the PCB, and includes a hand-signed letter from the founders. It’s a limited edition, so get while it’s in stock! For serious Arduino Uno lovers Arduino Uno Mini Limited Edition is a collector’s item for serious Arduino Lovers: hobbyists, students, makers, reimaginers, dreamers, hopers, fans, engineers, designers, questioners, cake-makers, problem-solvers, puzzlers, gamers, debaters, developers, entrepreneurs, architects, future-shapers, musicians, scientists... 10 million projects based on (official) Uno boards that have contributed to this incredible story. Specifications The Arduino Uno Mini Limited Edition is a microcontroller board based on the ATmega328P. It has 14 digital inputs/outputs (six of which can be used as PWM outputs), six analog inputs, a 16 MHz ceramic resonator, a USB-C connector, and a reset button. Contains everything needed to support the microcontroller. Simply connect it to a computer with a USB cable, use a power adapter, or connect a battery to get started. Microcontroller ATmega328P USB connector USB-C Built-in LED Pins 13 Digital I/O Pins 14 Analog Input Pins 6 PWM Pins 6 UART Yes I²C Yes SPI Yes Circuit operating voltage 5 V Input Voltage (limit) 6-12 V Battery connector None DC current per I/O Pin 20 mA DC current for 3.3 V Pin 50 mA Main processor ATmega328P (16 MHz) USB-serial processor ATmega16U2 (16 MHz) Memory ATmega328P 2 KB SRAM, 32 KB Flash, 1 KB EEPROM Weight 8.05 g Dimensions 26.70 x 34.20 mm Downloads Datasheet

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Features Nordic nRF52840 Bluetooth LE processor – 1 MB of Flash, 256KB RAM, 64 MHz Cortex M4 processor 1.3″ 240×240 Color IPS TFT display for high-resolution text and graphics Power it from any 3-6V battery source (internal regulator and protection diodes) Two A / B user buttons and one reset button ST Micro series 9-DoF motion – LSM6DS33 Accel/Gyro + LIS3MDL magnetometer APDS9960 Proximity, Light, Color, and Gesture Sensor PDM Microphone sound sensor SHT Humidity BMP280 temperature and barometric pressure/altitude RGB NeoPixel indicator LED 2 MB internal flash storage for datalogging, images, fonts or CircuitPython code Buzzer/speaker for playing tones and beeps Two bright white LEDs in front for illumination / color sensing Qwiic / STEMMA QT connector for adding more sensors, motor controllers, or displays over I²C. You can plug in GROVE I²C sensors by using an adapter cable. Programmable with Arduino IDE or CircuitPython

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SwiftIO offers a full Swift compiler and framework environment that runs on the microcontroller. The SwiftIO board is a compact electronic circuit board that runs Swift on the bare metal, giving you a system that can be used to control all kinds of electronic projects. Features NXP i.MX RT1052 Crossover Processor with ARM Cortex-M7 core @ 600 MHz 8 MB SPI Flash, 32 MB SDRAM On-board DAPLink debugger On-board USB to UART for serial communication On-board RGB LED On-board SD socket 46x GPIO, 12x ADC, 14x PWM, 4x UART, 2x I²C, 2x SPI etc. Many additional advanced features to meet the needs of advanced users Zephyr RTOS support MadMachine IDE is the premier integrated development environment for SwiftIO, which makes it easy to write Swift code and download it to the board.

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The GTMEDIA V8 Finder2 is a handheld satellite meter that supports DVB-S/S2 and MPEG-2/4 H.264 (8-bit) standards. Designed for convenience, it boasts a compact size, lightweight build, user-friendly interface, extended battery life, and a comprehensive set of features. This meter provides all the essential functions needed for efficient installation and verification of digital satellite TV services, whether for individual residences or multi-dwelling units. Specifications Frequency Range 950-2150 MHz DC IN 13 V/18 V (max 350 mA) Display 3.5" HD TFT LCD Screen (320 x 240) Standard DVB-S/S2/S2X Battery Built-in 7.4 V/4000 mAh Lithium battery Dimensions 95 x 155 x 45 mm Weight 450 g Included GTmedia V8 Finder 2 USB cable Manual

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The Raspberry Pi 500 (based on the Raspberry Pi 5) features a quad-core 64-bit Arm processor, RP1 I/O controller, 8 GB RAM, wireless networking, dual-display output, 4K video playback, and a 40-pin GPIO header. It's a powerful, compact all-in-one computer built into a portable keyboard. The built-in aluminum heatsink provides improved thermal performance, allowing the Raspberry Pi 500 to run quickly and smoothly even under heavy load. Specifications SoC Broadcom BCM2712 CPU ARM Cortex-A76 (ARM v8) 64-bit Clock rate 4x 2.4 GHz GPU VideoCore VII (800 MHz) RAM 8 GB LPDDR4X (4267 MHz) WiFi IEEE 802.11b/g/n/ac (2.4 GHz/5 GHz) Bluetooth Bluetooth 5.0, BLE Ethernet Gigabit Ethernet (with PoE+ support) USB 2x USB-A 3.0 (5 GBit/s)1x USB-A 2.01x USB-C (for power supply) PCI Express 1x PCIe 2.0 GPIO Standard 40-pin GPIO header Video 2x micro-HDMI ports (4K60) Multimedia H.265 (4K60 decode)OpenGL ES 3.1, Vulkan 1.2 SD card microSD Power supply 5 V DC (via USB-C) Keyboard layout US (QWERTY) Dimensions 286 x 122 x 23 mm Downloads Datasheet

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The M12 Mount Lens (5 MP, 25 mm) is ideal for use with the Raspberry Pi HQ Camera Module, offering sharp and detailed imaging for a wide range of applications.

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The SEQURE ES666 is a smart electric screwdriver designed for precision tasks such as assembling and disassembling electronics, RC models, drones, and more. It features multiple operation modes: Sensing Mode, Fixed Mode, and Automatic Mode, allowing for versatile use. The device includes an OLED display and a 600 mAh rechargeable battery providing up to 4 hours of no-load operation. Features Smart Control: Supports angle sensing control and adjustable sensitivity. It starts and stops automatically for hands-free operation, and stops automatically when the screw is fully tightened. Enhanced Visibility: Equipped with front-facing shadowless LED lights with on/off and delay modes. Robust Design: Constructed with a metal shell and anti-slip strips for a secure grip that prevents rolling. High-Quality Bits: Includes durable S2 steel bits with built-in strong magnets for fast screw assembly and disassembly. Powerful Performance: Features a metal gear reduction motor and a built-in high-capacity battery for stable, continuous use. Smart Display: Comes with a dynamic multi-functional UI interface and supports firmware upgrades. Versatile Use: Offers 7 torque settings to suit a variety of tasks – ideal for repairing, assembling, or disassembling RC models, drones, mobile phones, computers, watches, glasses, and other electronics. Specifications Manual Torque 22kgf.cm / 2.2N.m Torque Gears 7 Battery 600 mAh No-load Speed 250 rpm Working Time No-load 4h Charging USB-C 5 V Bits 4 mm Hexagon Display 128 x 32 OLED Front Lighting LED Working Modes Sensing, Fixed, Automatic Firmware Upgrades Yes Menu Languages English, Russian, and Chinese Dimensions 15 x 16 x 140 mm Weight (Screwdriver) 57 g Included 1x SEQURE ES666 Electric Screwdriver 30x Magnetic S2 steel bits 1x USB-C charging cable 1x Carrying case

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The FR01D (2-in-1) thermal imaging camera and multimeter is a compact and lightweight solution that simplifies diagnostic and maintenance tasks. The one-click function allows you to switch effortlessly between thermal imaging and multimeter mode, giving you two important tools in one portable device. The multimeter is capable of measuring DC and AC voltage, resistance, diode checks, continuity testing, and capacitance. The FR01D has a 2.8-inch touchscreen with a resolution of 320 x 480 pixels. The device is powered by an integrated rechargeable lithium battery and can be charged via USB. With the FR01D, you can inspect and maintain circuit boards, check power supplies, repair electronic devices, and overhaul household appliances. Its compact size, multifunctionality, and user-friendliness make the FR01D the ideal companion for electronics and maintenance technicians. General Specifications Display size 2.8" (320 x 480) Touchscreen Resistive Data transmission USB-C Image storage format BMP Battery Li-ion battery Storage temperature −20°C～60°C（−4°F～140°F) Operating temperature 0°C～50°C（32°F～122°F) Operating humidity <85% RH Dimensions 134 x 69 x 25 mm Weight 130 g Thermal Imaging Specifications Sensor Vanadium oxide (VOx) Image capture frequency 25 Hz Thermal imaging pixels 192 x 192 Field of View (FOV) 50.0°(H) x 50°(V) / 72.1°(D) Temperature range −20°C ~ +550°C (−4°F～1022°F) Gain mode Auto Accuracy ±2°C or ±2% Measurement resolution 0.1°C / 0.1°F Multimeter Specifications DC input voltage (max.) 1000 V AC input voltage (max.) 750 V Resistance (max.) 99.99 MΩ Capacitance (max.) 99.99 mF Duty cycle test range 0.1% ~ 99.9% Diode test range 0 V ~ 3 V Continuity test 999.9 Ω Display 9999 counts (Refreshes 3x per second) Accuracy Function Range Resolution Accuracy AC Voltage 400 mV 0.1 mV 2% +3 9.999 V 0.001 V 1.0% +3 99.99 V 0.01 V 999.9 V 0.1V DC Voltage 400 mV 0.1 mV 2% +3 9.999 V 0.001 V 1.0% +3 99.99 V 0.01 V 999.9 V 0.1 V Resistance 999.9 Ω 0.1 Ω 0.5% +3 9.999 KΩ 0.001 kΩ 99.99 KΩ 0.01 kΩ 999.9 KΩ 0.1 kΩ 9.999 MΩ 0.001 MΩ 99.99 MΩ 0.01 MΩ 1.5% +3 Diode Test 3.000 V 0.001 V 10% Capacitance 9.999 nF 0.001 nF 2% +5 99.99 nF 0.01 nF 999.9 nF 0.1 nF 9.999 uF 0.001 uF 99.99 uF 0.01 uF 999.9 uF 0.1 uF 9.999 mF 0.001 mF 5% +5 99.99 mF 0.01 mF Included 1x FR01D IR-Camera and Multimeter 2x Test Leads 1x USB Cable 1x Manual

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OV7740 is a AI Camera powered by Kendryte K210, an edge computing system-on-chip(SoC) with a dual-core 64bit RISC-V CPU and state-of-art neural network processor. Features Dual-Core 64-bit RISC-V RV64IMAFDC (RV64GC) CPU / 400Mhz(Normal) Dual Independent Double Precision FPU 8MiB 64bit width On-Chip SRAM Neural Network Processor(KPU) / 0.8Tops Field-Programmable IO Array (FPIOA) AES, SHA256 Accelerator Direct Memory Access Controller (DMAC) Micropython Support Firmware encryption support On-board Hardware: Flash: 16M Camera :OV7740 2x Buttons Status Indicator LED External storage: TF card/Micro SD Interface: HY2.0/compatible GROVE Applications Face recognition/detection Object detection/classification Obtain the size and coordinates of the target in real-time Obtain the type of detected target in real-time Shape recognition Video recorder Included 1x UNIT-V(include 20cm 4P cable and USB-C cable)

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The FNIRSI CTG-20 is a coating thickness gauge designed for measuring the thickness of electroplated coatings or coatings on metal surfaces. It can accurately measure non-magnetic coatings (such as paint) on magnetic materials like steel or iron, as well as coatings on non-magnetic materials such as aluminum. Equipped with a built-in precision probe and a rechargeable lithium battery, the device automatically detects substrate properties and determines coating thickness using electromagnetic induction and eddy current effects. This robust instrument delivers fast and highly accurate measurements, making it ideal for applications in manufacturing, the chemical industry, the automotive sector, and other testing fields. Specifications Measuring Range 0-1400 μm Accuracy ±3% +2 μm Resolution Ratio 0.1 μm Calibration Zero point calibration, Multi-point calibration Unit μm, mil Minimum Convex Curvature Radius 5 mm Minimum Convex Curvature Radius 25 mm Minimum measurement area diameter 20 mm Battery 600 mAh Lithium battery Charging Interface USB-C Features Data Storage, Rotatable Screen, Putty Powder Test, Auto Power Off Dimensions 115 x 48 x 18 mm Weight 83 g Included 1x FNIRSI CTG-20 Coating Thickness Gauge 1x USB cable 1x Manual Downloads Manual

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The AVR-IoT WA development board combines a powerful ATmega4808 AVR MCU, an ATECC608A CryptoAuthentication secure element IC and the fully certified ATWINC1510 Wi-Fi network controller – which provides the most simple and effective way to connect your embedded application to Amazon Web Services (AWS). The board also includes an on-board debugger, and requires no external hardware to program and debug the MCU. Out of the box, the MCU comes preloaded with a firmware image that enables you to quickly connect and send data to the AWS platform using the on-board temperature and light sensors. Once you are ready to build your own custom design, you can easily generate code using the free software libraries in Atmel START or MPLAB Code Configurator (MCC). The AVR-IoT WA board is supported by two award-winning Integrated Development Environments (IDEs) – Atmel Studio and Microchip MPLAB X IDE – giving you the freedom to innovate with your environment of choice. Features ATmega4808 microcontroller Four user LED’s Two mechanical buttons mikroBUS header footprint TEMT6000 Light sensor MCP9808 Temperature sensor ATECC608A CryptoAuthentication™ device WINC1510 WiFi Module On-board Debugger Auto-ID for board identification in Atmel Studio and Microchip MPLAB X One green board power and status LED Programming and debugging Virtual COM port (CDC) Two DGI GPIO lines USB and battery powered Integrated Li-Ion/LiPo battery charger

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PÚCA DSP is an open-source, Arduino-compatible ESP32 development board for audio and digital signal processing (DSP) applications with expansive audio-processing features. It provides audio inputs, audio outputs, a low-noise microphone array, an integrated test-speaker option, additional memory, battery-charge management, and ESD protection all on a small, breadboard-friendly PCB. Synthesizers, Installations, Voice UI, and More PÚCA DSP can be used for a wide range of DSP applications, including but not limited to those in the fields of music, art, creative technology, and adaptive technology. Music-related examples include digital-music synthesis, mobile recording, Bluetooth speakers, wireless line-level directional microphones, and the design of smart musical instruments. Art-related examples include acoustic sensor networks, sound-art installations, and Internet-radio applications. Examples related to creative and adaptive technology include voice user interface (VUI) design and Web audio for the Internet of Sounds. Compact, Integrated Design PÚCA DSP was designed for portability. When used with an external 3.7 V rechargeable battery, it can be deployed almost anywhere or integrated into just about any device, instrument, or installation. Its design emerged from months of experimentation with various ESP32 development boards, DAC breakout boards, ADC breakout boards, Microphone breakout boards, and audio-connector breakout boards, and – despite its diminutive size – it manages to provide all of that functionality in a single board. And it dos so without compromising signal quality. Specifications Processor & Memory Espressif ESP32 Pico D4 Processor 32-bit dual core 80 MHz / 160 MHz / 240 MHz 4 MB SPI Flash with 8 MB additional PSRAM (Original Edition) Wireless 2.4 GHz Wi-Fi 802.11b/g/n Bluetooth BLE 4.2 3D Antenna Audio Wolfson WM8978 Stereo Audio Codec Audio Line In on 3.5 mm stereo onnector Audio Headphone / Line Out on 3.5 mm stereo connector Stereo Aux Line In, Audio Mono Out routed to GPIO Header 2x Knowles SPM0687LR5H-1 MEMS Microphones ESD protection on all audio inputs and outputs Support for 8, 11.025, 12, 16, 22.05, 24, 32, 44.1 and 48 kHz sample rates 1 W Speaker Driver, routed to GPIO Header DAC SNR 98 dB, THD -84 dB (‘A’ weighted @ 48 kHz) ADC SNR 95 dB, THD -84 dB (‘A’ weighted @ 48 kHz) Line input impedance: 1 MOhm Line output impedance: 33 Ohm Form Factor and Connectivity Breadboard friendly 70 x 24 mm 11x GPIO pins broken out to 2.54 mm pitch header, with access to both ESP32 ADC channels, JTAG and capacitive touch pins USB 2.0 over USB Type C connector Power 3.7/4.2 V Lithium Polymer Rechargeable Battery, USB or external 5 V DC power source ESP32 and Audio Codec can be placed into low power modes under software control Battery voltage level detection ESD protection on USB data bus Downloads GitHub Datasheet Links Crowd Supply Campaign (includes FAQs) Hardware Overview Programming the Board The Audio Codec

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The full-color, spiral-bound SIK guidebook (included) contains step-by-step instructions with circuit diagrams and hookup tables for building each project and circuit with the included parts. Full example code is provided, new concepts and components are explained at the point of use, and troubleshooting tips offer assistance if something goes wrong. The kit does not require any soldering and is recommended for beginners ages 10 and up looking for an Arduino starter kit. For SIK version 4.1, Sparkfun took an entirely different approach to teaching embedded electronics. In previous versions of the SIK, each circuit focused on introducing a new piece of technology. With SIK v4.1, components are introduced in the context of the circuit you are building. Each circuit builds upon the last, leading up to a project that incorporates all of the components and concepts introduced throughout the guide. With new parts and a completely new strategy, even if you've used the SIK before, you're in for a brand-new experience! The SIK V4.1 includes the Redboard Qwiic, which allows you to expand into the SparkFun Qwiic ecosystem after becoming proficient with the SIK circuits. The SparkFun Qwiic Connect System is an ecosystem of I²C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong. With the addition of the SparkFun RedBoard Qwiic, you will need to download a new driver install that is different from the original SparkFun RedBoard. Included SparkFun RedBoard Qwiic Arduino and Breadboard Holder SparkFun Inventor's Kit Guidebook White Solderless Breadboard Carrying Case SparkFun Mini Screwdriver 16 x 2 White-on-Black LCD (with headers) SparkFun Motor Driver (with Headers) Pair of Rubber Wheels Pair of Hobby Gearmotors Small Servo Ultrasonic Distance Sensor TMP36 Temp Sensor 6' USB Micro-B Cable Jumper Wires Photocell Tricolour LED Red, Blue, Yellow and Green LEDs Red, Blue, Yellow and Green Tactile Buttons 10K Trimpot Mini Power Switch Piezo Speaker AA Battery Holder 330 and 10K Resistors Binder Clip Dual-Lock Fastener

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