An adapter for connecting a servo meter with croc/alligator clips.
This is a handy little clip to connect a servo motor with 5.4 mm header socket using alligator clips. It is ideal for use with boards like the BBC micro:bit and Adafruit's Circuit Playground Express or Gemma.
Width: 27 mm
Height: 35 mm
Downloads
Datasheet
The Speaker Kit for Raspberry Pi is a small amplified speaker designed for the Raspberry Pi.
Included
MonkMakes Amplified Speaker
Set of 10 female to female header wires
Short stereo audio lead
Raspberry Leaf GPIO template
Downloads
Instructions
Datasheet
Projects with Arduino, ESPHome, Home Assistant, and Raspberry Pi & Co.
This e-book contains various example projects, beginning with an introduction to electronics. It also explains how to install Home Assistant on a Raspberry Pi, how to use indoor climate sensors for temperature and humidity, how to implement the MQTT protocol and other interfaces, and how to use ESPHome to integrate sensors and actuators into Home Assistant. Numerous video tutorials complement the book.
Fundamentals of electrical engineering
The book begins with an introduction to electrical engineering. You will learn the basics of voltage, current, resistors, diodes and transistors.
Arduino and microcontrollers
A complete section is dedicated to the Arduino Uno. You will get to know the structure, write your first programs and work on practical examples.
Home Assistant and automation
You will learn how to set up Home Assistant on a Raspberry Pi and how to use automations, scenes and devices. In addition, Zigbee, MQTT and ESP-NOW – important technologies for home automation – will be discussed.
ESP8266, ESP32 and ESP32-CAM
The popular ESP microcontrollers are covered in detail. A theoretical introduction is followed by practical projects that show you how to get the most out of these devices.
Sensors and actuators
The book explains the functionality and application of numerous sensors such as temperature and humidity sensors, motion detectors and RFID readers. For actuators, stepper motors, e-ink displays, servo motors and much more are covered. There are practical application examples for all devices.
ESPHome
This chapter shows you how to integrate sensors and actuators into Home Assistant without any programming effort. You will be guided step by step through the setup with ESPHome.
LEDs and lighting technology
In this chapter, you will learn about different types of LEDs and how they can be used. The basics of lighting technology are also explained.
Node-RED
A whole chapter is dedicated to Node-RED. You will learn the basics of this powerful tool and be guided step by step through its setup and use.
Integrated Circuits (ICs)
In electronics, there are numerous ICs that make our lives easier. You will get to know the most important ones and apply your knowledge in practical projects.
Professional programming
Advanced topics such as the correct use of buttons, the use of interrupts and the use of an NTP server for time synchronisation are covered in detail in this chapter.
Downloads
GitHub
The Pimoroni Explorer Starter Kit is an electronic adventure playground for physical computing based on the RP2350 chip. It includes a 2.8-inch LCD screen, a speaker, a mini breadboard and much more. It's ideal for tinkering, experiments, and building small prototypes.
Features
Mini breadboard for wiring up components
Servo headers
Analog inputs
Built-in speaker
Plenty of general purpose inputs/outputs
Connectors for attaching crocodile leads
Qw/ST connectors for attaching I²C breakouts
Specifications
Powered by RP2350B (Dual Arm Cortex-M33 running at up to 150 MHz with 520 KB of SRAM)
16 MB of QSPI flash supporting XiP
2.8" IPS LCD screen (320 x 240 pixels)
Driver IC: ST7789V
Luminance: 250 cd/m²
Active area: 43.2 x 57.5 mm
USB-C connector for programming and power
Mini breadboard
Piezo speaker
6x user-controllable switches
Reset and boot buttons
Easy access GPIO headers (6x GPIOs and 3x ADCs, plus 3.3 V power and grounds)
6x Crocodile clip terminals (3x ADCs, plus 3.3 V power and grounds)
4x 3-pin servo outputs
2x Qw/ST (Qwiic/STEMMA QT) connector
2-pin JST-PH connector for adding a battery
Lanyard slot!
Includes 2x desktop stand feet
Fully-assembled (no soldering required)
Programmable with C/C++ or MicroPython
Included
1x Pimoroni Explorer
1x Multi-Sensor Stick – a fancy new all-in-one super sensor suite for environmental, light and movement sensing
Selection of different colored LEDs to get blinky with (including red, yellow, green, blue, white and RGB)
1x Potentiometer (for analog amusements)
3x 12 mm switches with different coloured caps
2x Continuous rotation servos
2x 60 mm wheels for attaching to your servos
1x AAA battery holder (batteries not included)
1x Velcro to stick the battery holder to the back of Explorer
20x Pin to pin and 20x pin to socket jumper wires for making connections on your breadboard
1x Qw/ST cable to plug in the Multi-Sensor Stick
1x Silicon USB-C cable
Downloads
GitHub
Schematic
GrovePi+ is stacked on top of the Raspberry Pi without the need for any other connections. Communication between the two occurs over the I²C interface. All Grove modules connect to the universal Grove connectors on the GrovePi+ shield via the universal 4-pin connector cable.
Grove modules work on analog and digital signals and can be connected directly to the ATMEGA328 microcontroller on the Grove Pi+. The microcontroller acts as an interpreter between the Raspberry Pi and the Grove sensors. It sends, receives, and executes commands sent by the Raspberry Pi.
Features
One GrovePi+ board together with 12 popular Grove sensors and 10 Grove cables
GrovePi+ is compatible with Raspberry Pi A+, B, B+ / 2, 3, 4.
CE certified and compatible with Linux and Win 10 IoT.
Included
1x Grove Pi+
1x Grove - Rotary Angle Sensor
1x Grove - Sound Sensor
1x Grove - LCD RGB Backlight
1x Grove - Temp&Humi Sensor
1x Grove - Red LED
1x Grove - Light Sensor
1x Grove - Buzzer
1x Grove - Relay
1x Grove - Blue LED
1x Grove - Button
1x GrovePi+ Guidebook
10x Cables
1x Grove - UItrasonic Ranger
1x Grove - Green LED
Space, the final frontier, will become more and more popular. The space industry is continually growing and new products and services will be required. Innovation is needed for the development of this industry. Today it is no longer possible to follow all the events in field of space. The space market is growing and activities are increasing, especially the market for small-satellites.
This book wants to help close the gap and encourage electronic engineers to enter into the fascinating field of space electronics. One of the main difficulties is finding people with knowledge of space electronics design. Nowadays companies have to invest a lot of time and resources to instruct electronic engineers with no experience of space. Only a brief and basic introduction of this topic is typically achieved at university in space engineering lectures. Professionals with practical experience and the necessary theoretical knowledge are scarce. Companies from the space sector are searching for staff with knowledge of space electronics.
This book will bring space closer aspiring to the space electronic hobbyists.
The starter kit for Jetson Nano is one of the best kits for beginners to get started with Jetson Nano. This kit includes 32 GB MicroSD card, 20 W adapter, 2-pin jumper, camera, and micro-USB cable.
Features
32 GB High-performance MicroSD card
5 V 4 A power supply with 2.1 mm DC barrel connector
2-pin jumper
Raspberry Pi camera module V2
Micro-B To Type-A USB cable with DATA enabled
Learn RC and RL Filters with Hands-On Circuits and Simulation
Introduction to Electronic Filters is your comprehensive guide to understanding, designing, and applying first-order electronic filters using resistors, capacitors, and inductors. Whether you are a student, maker, or educator, this book demystifies the theory behind RC and RL filters and bridges the gap between concepts and real-world applications through simulation and experimentation.
From the basics of frequency response and phase shift to hands-on breadboard builds and Python-based simulations, this book offers a deeply practical learning experience. You will learn to analyse filters using Bode plots and phasors, and explore applications in audio tone shaping, sensor signal conditioning, noise reduction, and power supply filtering.
As you progress, you’ll build, measure, simulate, and tune filters using modern tools like CircuitLab, Python, and the Analog Discovery 3. Each chapter includes thoughtfully crafted activities that reinforce learning by doing – designing filters for specific tasks, simulating dynamic behaviour, and observing how theory translates into performance.
Inside you’ll find:
A clear introduction to the fundamentals of electronic filters
Detailed explanations of RC and RL filters, cutoff frequency, and phase
Guided activities using both simulation and hardware tools
Real-life applications in audio, sensors, power supplies, and more
A beginner-friendly primer on Python and algebra for electronics
Whether you’re working through simulations or experimenting with real components on your workbench, this book will help you develop a solid understanding of electronic filters and their role in practical circuits.
The QA403 is QuantAsylum's fourth-generation audio analyzer. The QA403 extends the functionality of the QA402 with improved noise and distortion performance, in addition to a flatter response at band edges. The compact size of the QA403 means you can take it just about anywhere.
Features
24-bit ADC/DAC
Up to 192 kS/s
Fully isolated from PC
Differential Input/Output
USB powered
Built-in Attenuator
Fast Bootup and Driverless
The QA403 is a driverless USB device, meaning it’s ready as soon as you plug it in. The software is free and it is quick and easy to move the hardware from one machine to the next. So, if you need to head to the factory to troubleshoot a problem or take the QA403 home for a work-from-home day, you can do it without hassle.
No-Cal Design
The QA403 comes with a factory calibration in its flash memory, ensuring consistent unit-to-unit performance. On your manufacturing line you can install another QA403 and be confident what you read on one unit will be very similar to the next unit. It is not expected that re-calibration will be required at regular intervals.
Measurements
Making basic measurements is quick and easy. In a few clicks you will understand the frequency response, THD(+N), gain, SNR and more of your device-under test.
Dynamic Range
The QA403 offers 8 gain ranges on the input (0 to +42 dBV in 6 steps), and 4 gain ranges on the output (-12 to +18 dBV in 10 dB steps). This ensures consistent performance over very wide ranges of input and output levels. The maximum AC input to the QA403 is +32 dBV = 40 Vrms. The maximum DC is ±40 V, and the maximum ACPEAK + DC = ±56 V.
Easy Programmability
The QA403 supports a REST interface, making it easy to automate measurements in just about any language you might anticipate. From Python to C++ to Visual Basic—if you know how to load a web page in your favorite language, you can control the QA403 remotely. Measurements are fast and responsive, usually with dozens of commands being processed per second.
Isolated and USB Powered
The QA403 is isolated from the PC, meaning you are measuring your DUT and not chasing some phantom ground loop. The QA403 is USB powered, like nearly all our instruments. If you are setting up remotely, throw a powered hub in your bag and your entire test setup can be running with a minimum of cables.
Goodbye Soundcard, Hello QA403
Tired of trying to make a soundcard work? The calibration nightmare? The lack of gain stages? The limited drive? Are you tired of dealing with the fixed input ranges? The worry that you might destroy it with too much DC or AC? Tired of the ground loops? That’s why QuantAsylum built the QA403.
Specifications
Dimensions
177 x 44 x 97 mm (W x H x D)
Weight
435 g
Case Material
Powder-coating Aluminum (2 mm thick front panel, 1.6 mm thick top/bottom)
Downloads
Datasheet
Manual
GitHub
Analogue Electronics and Microcontrollers Projects
Hobbyist electronics can be a fun way to learn new skills that can be helpful to your career. Those who understand the basics of electronics can design their own circuits and projects. However, before you run, you need to learn to walk.
It all starts with analogue electronics. You should be familiar with the simple components and circuits and understand their basic behaviors and the issues you may encounter. The best way to do this is through real experiments. Theory alone is not enough. This book offers a large number of practical entry-level circuits, with which everyone can gain the basic experience.
Through the widespread introduction of microcontrollers, a new chapter in electronics has begun. Microcontrollers are now performing more and more tasks that were originally solved using discrete components and conventional ICs. Starting out has become easier and easier thanks to platforms including Bascom, Arduino, micro:bit. The book introduces numerous manageable microcontroller applications. It’s now a case of less soldering and more programming.
This book contains more than 400 simple electronic circuits which are developed and tested in practice by the authors. The technical solutions presented in the book are intended to stimulate the creative imagination of readers and broaden their area of thought. This should allow readers to look beyond the horizons of possibilities and use ordinary electronic items in a new way. This book includes new and original radio electronic multipurpose circuits. The chapters of the book are devoted to power electronics and measuring equipment and contain numerous original circuits of generators, amplifiers, filters, electronic switches based on thyristors and CMOS switch elements. Wired and wireless systems as well as security and safety systems are presented. Due to the high relevance and increased interest of readers in little-known or not readily available information, the different chapters of this book describe the use of electronic devices in industrial electronics and for research, as well as new instruments and equipment for medical use, gas-discharge and Kirlian photography. A number of technical devices presented in this book are related to research of the mysteries of the earth, nature and human beings by using radio electronic devices. This book will be useful for both radio amateurs and professionals.