The ICL8038 signal generator delivers versatile waveforms, including sine, triangle, square, and forward/reverse sawtooth, making it suitable for a wide range of applications. Powered by the ICL8038 chip and high-speed operational amplifiers, it ensures exceptional precision and signal stability. With a frequency range of 5 Hz to 400 kHz, it supports applications from audio to radio frequencies. Its adjustable duty cycle, ranging from 2% to 95%, allows for precise waveform customization to meet various needs. The DIY kit is beginner-friendly, featuring through-hole components for easy assembly. It includes all necessary parts, an acrylic shell, and a detailed manual, providing everything required to build and use the signal generator efficiently. Specifications Frequency range 5 Hz~400 KHz (adjustable) Power supply voltage 12 V~15 V Duty cycle range 2~95% (adjustable) Low distortion sine wave 1% Low temperature drift 50 ppm/°C Output triangular wave linearity 0.1% DC bias range −7.5 V~7.5 V Output amplitude range 0.1 V~11 VPP (working voltage 12 V) Dimensions 89 x 60 x 35 mm Weight 81 g Included PCB incl. all necessary components Acrylic shell Manual

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This versatile plotter robot arm DIY kit for Arduino is equipped with MG90S metal gear servo motors to ensure precise and stable drawing movements. Features Fully compatible with Arduino IDE, includes complete source code for easy development and customization. Equipped with robust MG90S metal gear servo motors for accuracy and durability. Includes a Bluetooth module enabling wireless operation via a dedicated app. Specially designed robotic arm tip securely holds pens or markers with a diameter of 8-10 mm, ideal for sketches and detailed drawings. Included Arduino-compatible Nano motherboard Nano expansion board Bluetooth module MG90S all-metal gear servo motors Aluminum structural frame Thickened stable base plate Screw and fastening accessories Connecting wires USB data cable

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Looking for a fun DIY Christmas project? Assemble and program this extra-large Poly Reindeer figurine and make its LEDs shine all the colors of the rainbow! Ideal for both beginners and advanced makers! This educational and fun kit combines soldering and programming skills in one XL-sized project. First, you will need to solder some simple components onto the copper plated circuit board. The components include fancy RGB LEDs that have a special diffused effect. Once the soldering work is finished, you will be able to program the colors and light effects of the different LEDs thanks to the onboard Arduino Nano Every. The Arduino will be pre-programmed with some basic LED effects, so your kit will work once you power it with the included adaptor. Or you can choose to write your own code based on the available example code. Programmable add-ons The printed circuit board of this project is designed especially so you can add different add-ons. For example, add an OLED screen to display messages or program it to countdown the days until Christmas! Or add an IoT Tuya chip so your project can communicate with your smartphone. You can even add a sound microphone, motion sensor or light sensor. Features XL-sized & copper plated circuit board (PCB) in the shape of a polymetric reindeer 22 addressable (programmable) RGB LEDs 14 x 5 mm RGB LEDs 10 x 8 mm RGB LEDs Arduino Nano Every Onboard push button USB A to USB micro cable for programming USB A to USB B cable for power supply Wooden holder Complete manual and video available in 5 languages Example code for Arduino available Educational & fun for all ages and skill levels Expandable with lots of add-ons: an OLED screen a smart IoT sensor to connect with your smartphone a microphone sensor and more! Not included: soldering iron, soldering tin, pliers and an soldering mat Specifications Dimensions: 168 x 270 mm Power supply: 5 V/2.1 A max. (cable included)

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With this kit you can built all the projects described in the book 'Mastering the Arduino Uno R4'. The kit comes with several LEDs, sensors, actuators, and other components. The purpose of the kit is to make a flying start with hardware and software aspects of projects designed around the Arduino Uno microcontroller system. Included 1x RFID reader module 1x DS1302 clock module 1x 5 V stepper motor 1x '2003' stepper motor drive board 5x Green LED 5x Yellow LED 5x Red LED 2x Rocker switch 1x Flame sensor 1x LM35 sensor module 1x Infrared receiver 3x Light-dependent resistors (LDRs) 1x IR remote controller 1x Breadboard 4x Pushbutton (with four caps) 1x Buzzer 1x Piezo sounder 1x Adjustable resistor (potentiometer) 1x 74HC595 shift register 1x 7-segment display 1x 4-digit 7-segment display 1x 8x8 Dot-matrix display 1x 1602 / I²C LCD module 1x DHT11 Temperature and humidity module 1x Relay module 1x Sound module Set of Dupont cables Set of Breadboard cables 1x Water sensor 1x PS2 Joystick 5x 1 k-ohm resistor 5x 10 k-ohm resistor 5x 220-ohm resistor 1x 4x4 keypad module 1x 9g Servo (25 cm) 1x RFID card 1x RGB module 1x 9 V battery DC jack Not included Mastering the Arduino Uno R4 (Book) Arduino Uno R3/R4 (Board)

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Features ATmega32U4 with Arduino Leonardo bootloader on the board MCP2515 CAN Bus controller and MCP2551 CAN Bus transceiver OBD-II and CAN standard pinout selectable at the sub-D connector Compatible with Arduino IDE Parameter Value MCU ATmega32U4(with Arduino Leonardo bootloader) Clock Speed 16 MHz Flash Memory 32 KB SRAM 2.5 KB EEPROM 1 KB Operate Voltage（CAN-BUS） 9 V - 28 V Operate Voltage （MicroUSB） 5 V Input Interface sub-D Included CANBed PCBA sub-D connector 4PIN Terminal 2 x 4PIN 2.0 Connector 1 x 9x2 2.54 Header 1 x 3x2 2.54 Header

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A Retro Roll with a Neon Soul LED-based dice are common, but their light is cold. Not so for this electronic neon dice, which displays its value with the warm glow of neon lamps. It is perfect for playing games on cold, dark winter evenings. The pips of the dice are neon lamps and the random number generator has six neon lamps to show that it is working. Even though the dice has an on-board 100-V power supply, it is completely safe. As with all Elektor Classic products, the dice too has its circuit diagram printed on the front while an explanation of how the circuit works can be found on the rear side. The Neon Lamp Dice comes as a kit of easy-to-solder through-hole parts. The power supply is a 9-V battery (not included). Features Warm Vintage Glow Elektor Heritage Circuit Symbols Tried & Tested by Elektor Labs Educational & Geeky Project Through-Hole Parts Only Included Printed Circuit Board All Components Wooden Stand Required 9 V battery Component List Resistors (THT, 150 V, 0.25 W) R1, R2, R3, R4, R5, R6, R14 = 1 MΩ R7, R8, R9, R10, R11, R12 = 18 kΩ R13, R15, R16, R17, R18, R21, R23, R24, R25, R26, R28, R30, R33 = 100 kΩ R32, R34 = 1.2 kΩ R19, R20, R22, R27, R29 = 4.7 kΩ R31 = 1 Ω Capacitors C1, C2, C3, C4, C5, C6 = 470 nF, 50 V, 5 mm pitch C7, C9, C11, C12 = 1 µF, 16 V, 2 mm pitch C8 = 470 pF, 50 V, 5 mm pitch C10 = 1 µF, 250 V, 2.5 mm pitch Inductors L1 = 470 µH Semiconductors D1, D2, D3, D4, D5, D6, D7 = 1N4148 D8 = STPS1150 IC1 = NE555 IC2 = 74HC374 IC3 = MC34063 IC4 = 78L05 T1, T2, T3, T4, T5 = MPSA42 T6 = STQ2LN60K3-AP Miscellaneous K1 = PP3 9 V battery holder NE1, NE2, NE3, NE4, NE5, NE6, NE7, NE8, NE9, NE10, NE11, NE12, NE13 = neon light S2 = Miniature slide switch S1 = Pushbutton (12 x 12 mm)

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The Elektor Laser Head transforms the Elektor Sand Clock into a clock that writes the time on glow-in-the-dark film instead of sand. In addition to displaying the time, it can also be used to create ephemeral drawings. The 5 mW laser pointer, with a wavelength of 405 nm, produces bright green drawings on the glow-in-the-dark film. For best results, use the kit in a dimly lit room. Warning: Never look directly into the laser beam! The kit includes all the necessary components, but soldering three wires is required. Note: This kit is also compatible with the original Arduino-based Sand Clock from 2017. For more details, see Elektor Magazine 1-2/2017 and Elektor Magazine 1-2/2018.

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CrowBot BOLT is an ESP32-controlled, intelligent, simple and easy-to-use open source robot car. It is compatible with the Arduino and MicroPython environments, with graphical programming via Letscode. 16 learning courses with interesting experiments are available. Features 16 lessons in three languages (Letscode, Arduino, Micropython), fast learning and fun experiments Compatible with Arduino, MicroPython development environment, using Letscode graphical programming, easy to use Strong scalability, with a variety of interfaces, can be expanded and used with Crowtail modules A variety of remote control modes, you can use the infrared remote control and joystick to control the car Specifications Processor ESP32-Wrover-B (8 MB) Programming Letscode, Arduino, Micropython Control method Bluetooth Remote Control/Infrared Remote Control Input Button, Light sensor, Infrared Receiving Module, Ultrasonic Sensor, Line Tracking Sensor Output Buzzer, Programmable RGB Light, Motor Wifi & Bluetooth Yes Light sensor Can realize the function of chasing light or avoiding light Ultrasonic Sensor When an obstacle is detected, the driving route of the car can be corrected to avoid the obstacle Line Tracking Sensor Can make the car move along the dark/black lines, intelligently judge and correct the driving path Buzzer Can make the car sound/whistle, bringing a more direct sensory experience Programmable RGB Light Through programming, it can show colorful lights in different scenes Infrared receiver Receive infrared remote control signals to realize remote control Interfaces 1x USB-C, 1x I²C, 1x A/D Motor type GA12-N20 Micro DC Gear Motor Operating temperature -10℃~+55℃ Power supply 4x 1.5 V batteries (not included) Battery life 1.5 hours Dimensions 128 x 92 x 64 mm Weight 900 g Included 1x Chassis 1x Ultrasonic Sensor 1x Battery Holder 2x Wheels 4x M3x8 mm Screws 2x M3x5 mm Copper Column 2x Side Acrylic Plates 1x Front Acrylic Plates 1x Screwdriver 2x 4 Pin Crowtail Cable 1x USB-C Cable 1x Infrared remote control 1x Instructions & Line Track Map 1x Joystick Downloads Wiki CrowBot-BOLT_Assembly-Instruction Joystick-for-CrowBot-BOLT_Assembly-Instruction CrowBot_BOLT_Beginner’s_Guide Designing Documents of CrowBot Designing Documents of Joystick Lesson Code 3D Model Factory Source Code

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This bundle contains the popular Elektor Sand Clock for Raspberry Pi Pico and the new Elektor Laser Head Upgrade, offering even more options for displaying the time. Not only can you "engrave" the current time in sand, you can now alternatively write it on a glow-in-the-dark foil or create green drawings. Contents of the bundle Elektor Sand Clock for Raspberry Pi Pico (normal price: €50) NEW: Elektor Laser Head Upgrade for Sand Clock (normal price: €35) Elektor Sand Clock for Raspberry Pi (Raspberry Pi-based Eye Catcher) A standard sand clock just shows how time passes. In contrast, this Raspberry Pi Pico-controlled sand clock shows the exact time by "engraving" the four digits for hour and minute into the layer of sand. After an adjustable time the sand is flattened out by two vibration motors and everything begins all over again. At the heart of the sand clock are two servo motors driving a writing pen through a pantograph mechanism. A third servo motor lifts the pen up and down. The sand container is equipped with two vibration motors to flatten the sand. The electronic part of the sand clock consists of a Raspberry Pi Pico and an RTC/driver board with a real-time clock, plus driver circuits for the servo motors. A detailed construction manual is available for downloading. Features Dimensions: 135 x 110 x 80 mm Build time: approx. 1.5 to 2 hours Included 3x Precut acrylic sheets with all mechanical parts 3x Mini servo motors 2x Vibration motors 1x Raspberry Pi Pico 1x RTC/driver board with assembled parts Nuts, bolts, spacers, and wires for the assembly Fine-grained white sand Elektor Laser Head Upgrade for Sand Clock The new Elektor Laser Head transforms the Sand Clock into a clock that writes the time on glow-in-the-dark film instead of sand. In addition to displaying the time, it can also be used to create ephemeral drawings. The 5 mW laser pointer, with a wavelength of 405 nm, produces bright green drawings on the glow-in-the-dark film. For best results, use the kit in a dimly lit room. Warning: Never look directly into the laser beam! The kit includes all the necessary components, but soldering three wires is required. Note: This kit is also compatible with the original Arduino-based Sand Clock from 2017. For more details, see Elektor Magazine 1-2/2017 and Elektor Magazine 1-2/2018.

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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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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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This kit contains more than 130 components and is specially compiled to build the projects from The Book of 555 Timer Projects. The components are through-hole, so they fit onto a breadboard. This makes it easy to modify and experiment with the projects. Kit Contents Resistors 1x 15 kΩ 1x 68 kΩ 2x 47 kΩ 1x 82 kΩ 2x 820 Ω 1x 8.2 kΩ 3x 10 kΩ 1x 1.8 kΩ 1x 6.8 kΩ 14x 2.2 kΩ 10x 680 Ω 1x 27 kΩ 1x 5.6 kΩ 1x 560 kΩ 1x 4.7 kΩ 1x 3.3 kΩ 3x 33 kΩ 1x 36 kΩ 2x 100 kΩ 5x 1 kΩ 1x 3.9 kΩ 2x 56 kΩ 2x 12 kΩ 1x 10 kΩ potentiometer 1x 1 MΩ potentiometer 2x 50 kΩ potentiometer 3x 20 kΩ potentiometer 1x 10 kΩ potentiometer 1x 10 kΩ potentiometer 1x 50 kΩ potentiometer 1x 100 kΩ potentiometer 1x 50 kΩ potentiometer Capacitors 1x 0.33 μF 1x 1 μF 1x 10 nF 1x 22 nF 1x 47 nF 1x 100 nF 1x 10 μF electrolytic 1x 33 μF electrolytic 2x 100 μF electrolytic LEDs 10x 5 mm red LED 10x 3 mm red LED 3x 3 mm yellow LED 3x 3 mm green LED 1x Common-cathode 7-segment LED Semiconductors 3x 555 timer 1x CD4017 counter 1x CD4026 counter 1x CD4011 NAND gate 4x 1N4148 diode 1x IRFZ46N MOSFET 1x Thermistor 1x Light dependent resistor (LDR) Miscellaneous 1x Passive buzzer 1x Active buzzer 1x SG90 servo 1x 8 Ω mini loudspeaker 1x 9 V DC brushed motor 1x 5 V relay 1x 9 V battery clip 7x Pushbutton switches 1x Breadboard 1x Breadboard jumper wires

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If you are looking for a simple way to learn soldering, or just want to make a small gadget that you can carry, this set is a great opportunity. Reaction game is an educational kit which teaches you how to solder, and in the end, you get to have your own small game. The goal of the game is to press the button next to the LED as soon as it turns on. With every correct answer, the game gets a bit harder – the time you have to press the button shortens. How many correct answers can you get? It’s based on ATtiny404 microcontroller, programmed in Arduino. At its back, you’ll find CR2032 battery which makes the kit portable. There’s keychain holder as well. Soldering process is easy enough based on the mark on the PCB. Included 1x PCB 1x ATtiny404 microcontroller 4x LEDs 4x Pushbuttons 1x Switch 4x Resistors (330 ohm) 1x CR2032 battery holder 1x Battery CR2032 1x Keychain holder

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If you are looking for a simple way to learn soldering, or just want to make a small gadget that you can carry, this set is a great opportunity. Stop me game is an educational kit which teaches you how to solder, and in the end, you get to have your own small game. The LEDs go up and down, and your goal is to press the button as soon as the green LED turns on. With every correct answer, the game gets a bit harder – the time you have to press the button shortens. How many correct answers can you get? It’s based on ATtiny404 microcontroller, programmed in Arduino. At its back, you’ll find CR2032 battery which makes the kit portable. There’s keychain holder as well. Soldering process is easy enough based on the mark on the PCB. Included 1x PCB 1x ATtiny404 microcontroller 7x LEDs 1x Pushbutton 1x Switch 7x Resistors (330 ohm) 1x CR2032 battery holder 1x Battery CR2032 1x Keychain holder

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This kit is based on ESP32 and LoRa. The ESP32 3.5" display is the console for the system, it receives the LoRa message from LoRa moisture sensors (support up to 8 sensors in the default firmware), and send control commands to LoRa 4-channel MOSFET (2 4-channel MOSFET supported, with totally 8 channels), to control the connected valves open/close, and thus to control the irrigation for multiple points. Features Ready to use: Firmware are pre-programmed for all the modules before shipping, the user can only power them up and set the ID to the console, and start to use. Suitable for none-programmers, in 3 minutes to create filed application. With Lora wireless connection: The monitor & control range can be up to few kilometer, suitable for garden/small farm. Soil moisture sensor with good corrosion resistance, can be used at least half an year with 2 AAA battery. Easy to install: Compares to cheap solution with wires, which is hard to implement in files application, there the connection wires do not needed, the whole installation clean and easy; The valves can be connected Lora MOSFET easily. Hardware & Software Open: To study Lora & FreeRTOS. The ESP32 display console/Lora Soil Moisture Sensor/LoRa MOSFE are all programmed with Arduino. For programmers/engineers, can development further more specialized application. Based on ESP32, with WiFi connection, the console can also access to internet, the create much more applications including the moisture data updating to internet for remote monitor, and remote control with MQTT. Included 1x ESP32 3.5' Display (without camera) 1x Lora Expansion for ESP32 Display 2x Lora Moisture Sensor 1x Lora 4-channel MOSFET 1x 12 V Power Supply Water Pipe (5 m) 1x 1-input & 4-output Pipe Joint Downloads Instructable: Soil Monitoring & Irrigation with LoRa GitHub

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This kit contains everything needed to start learning about connecting electronics to the micro:bit in an accessible and easy manner. Everything is connected using the supplied alligator clips, so no soldering required. Included MonkMakes Speaker for micro:bit MonkMakes Switch for micro:bit MonkMakes Sensor Board for micro:bit Set of alligator clip leads (10 leads) Small motor with fan Single AA battery box (battery not included) Light bulb and holder Booklet (A5) Downloads Instructions Datasheet Lesson Plans

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