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Contents Projects PicoVoiceVoice alienation and sound effects with the Raspberry Pi Pico Navigation with Vibration Feedback POV Display Pulse Width Modulation (PWM) with the Raspberry Pi Pico Wi-Fi with the Raspberry Pi Pico 'Hello World' from the Raspberry Pi Pico and RP2040A look at the Raspberry Pi Foundation’s first microcontroller Simple On-Off Temperature Controller with Raspberry Pi HAT Multitasking with the Raspberry PiShowcase: a traffic lights controller The Raspberry Pi Ruler GadgetFun with a time-of-flight sensor Raspberry Pi Buffer Board (Mk. 1)Never blow up the I/O again FM radio with RDSA top HAT project for the Raspberry Pi LoRa with the Raspberry Pi PicoFun with MicroPython! Tutorials Qt for the Raspberry Pi Raspberry Pi Pico Programmingwith MicroPython and Thonny Raspberry Pi Full StackRPi and RF24 at the heart of a sensor network Raspberry Pi Bash Command Cheat Sheet Community Java on the Raspberry PiAn interview with Frank Delporte Reviews Introducing the New Raspberry Pi Pico W, H, and WH Secure Boot Solution for Raspberry PiRetrofit security at a reasonable price Review: SmartPi – Smart Meter Extension for Raspberry Pi Review: The Enviro+ Raspberry Pi HATMeasuring environmental data with Raspberry Pi and the HAT Enviro+ Review: Meet the Raspberry Pi 4All new but still good? Raspberry Pi Gets a Fast 3.5' Touch DisplayMore power at no extra charge Book Launch: Raspberry Pi for Radio Amateurs

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RTL-SDR is an affordable dongle that can be used as a computer-based radio scanner for receiving live radio signals between 500 kHz and 1.75 GHz in your area. The RTL-SDR V4 offers several improvements over generic brands including use of the R828D tuner chip, triplexed input filter, notch filter, improved component tolerances, a 1 PPM temperature compensated oscillator (TCXO), SMA F connector, aluminium case with passive cooling, bias tee circuit, improved power supply, and a built in HF upconverter. RTL-SDR V4 comes with the portable dipole antenna kit. It is great for beginners as it allows for terrestrial and satellite reception and easy to mount outdoors and designed for portable and temporary outside usage. Features Improved HF reception: V4 now uses a built-in upconverter instead of using a direct sampling circuit. This means no more Nyquist folding of signals around 14.4 MHz, improved sensitivity, and adjustable gain on HF. Like the V3, the lower tuning range remains at 500 kHz and very strong reception may still require front end attenuation/filtering. Improved filtering: The V4 makes use of the R828D tuner chip, which has three inputs. The SMA input has been triplexed input into 3 bands: HF, VHF and UHF. This provides some isolation between the 3 bands, meaning out of band interference from strong broadcast stations is less likely to cause desensitization or imaging. Improved filtering x2: In addition to the triplexing, the open drain pin on the R828D can be also used, which allows to add simple notch filters for common interference bands such as broadcast AM, broadcast FM and the DAB bands. These only attenuate by a few dB, but may still help. Improved phase noise on strong signals: Due to an improved power supply design, phase noise from power supply noise has been significantly reduced. Less heat: Another advantage of the improved power supply is low power consumption and less heat generation compared to the V3. Included 1x RTL-SDR V4 dongle (R828D RTL2832U 1PPM TCXO SMA) 2x 23 cm to 1 m telescopic antenna 2x 5 cm to 13 cm telescopic antenna 1x Dipole antenna base with 60 cm RG174 1x 3 m RG174 extension cable 1x Flexible tripod mount 1x Suction cup mount Downloads Datasheet User Guide Quick Start Guide SDR# User Guide Dipole Antenna Guide

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The Raspberry Pi SSD Kit bundles a Raspberry Pi M.2 HAT+ with a Raspberry Pi NVMe SSD. It unlocks outstanding performance for I/O intensive applications on Raspberry Pi 5, including super-fast startup when booting from SSD. The Raspberry Pi SSD Kit is also available with 512 GB capacity. Features 40k IOPS (4 kB random reads) 70k IOPS (4 kB random writes) Conforms to the Raspberry Pi HAT+ specification Included 256 GB NVMe SSD M.2 HAT+ for Raspberry Pi 5 16 mm GPIO stacking header Mounting hardware kit (spacers, screws) Downloads Datasheet

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Raspberry Pi DAC+ (formerly known as IQaudio DAC+) is a high-performance audio HAT designed for any Raspberry Pi with a 40-pin GPIO header. Equipped with the Texas Instruments PCM5122 DAC, it delivers crystal-clear stereo analogue audio through a pair of phono (RCA) connectors. No external power is needed – the DAC+ connects directly to the Raspberry Pi’s GPIO header without requiring soldering or cables. Features Power LED Analogue audio out (0-2 V RMS) via panel-mounted stereo phono (RCA) sockets with MUTE signal (headphone detect) Dedicated headphone amplifier, output via 3.5 mm panel-mounted barrel socket 40-pin pass-through GPIO header HAT EEPROM write-enabled Downloads Datasheet

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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 Included Raspberry Pi 500 (US keyboard layout, QWERTY) Official 27 W Power Supply for Raspberry Pi (EU, white) Official Raspberry Pi Mouse (white) Official Raspberry Pi HDMI Cable (white, 2 m) 32 GB microSD Card with pre-installed Raspberry Pi OS The Official Raspberry Pi Beginner's Guide (5th Edition) Downloads Datasheet

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Multitasking and multiprocessing have become a very important topic in microcontroller-based systems, namely in complex commercial, domestic, and industrial automation applications. As the complexity of projects grows, more functionalities are demanded from the projects. Such projects require the use of multiple inter-related tasks running on the same system and sharing the available resources, such as the CPU, memory, and input-output ports. As a result of this, the importance of multitasking operations in microcontroller-based applications has grown steadily over the last few years. Many complex automation projects now make use of some form of a multitasking kernel. This book is project-based and its main aim is to teach the basic features of multitasking using the Python 3 programming language on Raspberry Pi. Many fully tested projects are provided in the book using the multitasking modules of Python. Each project is described fully and in detail. Complete program listings are given for each project. Readers should be able to use the projects as they are, or modify them to suit their own needs. The following Python multitasking modules have been described and used in the projects: Fork Thread Threading Subprocess Multiprocessing The book includes simple multitasking projects such as independently controlling multiple LEDs, to more complex multitasking projects such as on/off temperature control, traffic lights control, 2-digit, and 4-digit 7-segment LED event counter, reaction timer, stepper motor control, keypad based projects, car park controller, and many more. The fundamental multitasking concepts such as process synchronization, process communication, and memory sharing techniques have been described in projects concerning event flags, queues, semaphores, values, and so on.

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Features Suitable for Raspberry Pi + GPIO Extension Board Exquisite appearance DIY operation Specifications Size of GPIO Extension Board: 7.5 x 6 cm (3 x 2.4') Size of Breadboard: 16.5 x 5.5 x 1 cm (6.5 x 2.2 x 0.4') Included 1x GPIO Extension Board 1x Breadboard 1x 40P Pin Connect Line 8x 1K Resistor 8x 10K Resistor 4x LED (yellow) 4x LED (red) 4x Key 10x 25 mm Jumper Wires A 10x 25 mm Jumper Wires B

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The Raspberry Pi Zero W extends the Raspberry Pi Zero family. The Raspberry Pi Zero W has all the functionality of the original Raspberry Pi Zero, but comes with added connectivity consisting of: 802.11 b/g/n wireless LAN Bluetooth 4.1 Bluetooth Low Energy (BLE) Other Features 1 GHz, single-core CPU 512 MB RAM Mini HDMI and USB On-The-Go ports Micro-USB power HAT-compatible 40-pin header Composite video and reset headers CSI camera connector Downloads Mechanical Drawing Schematics

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Raspberry Pi Pico W is a microcontroller board based on the Raspberry Pi RP2040 microcontroller chip. The RP2040 microcontroller chip ('Raspberry Silicon') offers a dual-core ARM Cortex-M0+ processor (133 MHz), 256 KB RAM, 30 GPIO pins, and many other interface options. In addition, there is 2 MB of on-board QSPI flash memory for code and data storage. Raspberry Pi Pico W has been designed to be a low cost yet flexible development platform for RP2040 with a 2.4 GHz wireless interface using an Infineon CYW43439. The wireless interface is connected via SPI to the RP2040. Features of Pico W RP2040 microcontroller with 2 MB of flash memory On-board single-band 2.4 GHz wireless interfaces (802.11n) Micro USB B port for power and data (and for reprogramming the flash) 40 pin 21 x 51 mm 'DIP' style 1 mm thick PCB with 0.1' through-hole pins also with edge castellations Exposes 26 multi-function 3.3 V general purpose I/O (GPIO) 23 GPIO are digital-only, with three also being ADC capable Can be surface mounted as a module 3-pin ARM serial wire debug (SWD) port Simple yet highly flexible power supply architecture Various options for easily powering the unit from micro USB, external supplies or batteries High quality, low cost, high availability Comprehensive SDK, software examples and documentation Features of the RP2040 microcontroller Dual-core cortex M0+ at up to 133 MHz On-chip PLL allows variable core frequency 264 kByte multi-bank high performance SRAM External Quad-SPI Flash with eXecute In Place (XIP) and 16 kByte on-chip cache High performance full-crossbar bus fabric On-board USB1.1 (device or host) 30 multi-function general purpose I/O (four can be used for ADC) 1.8-3.3 V I/O voltage 12-bit 500 ksps analogue to digital converter (ADC) Various digital peripherals 2x UART, 2x I²C, 2x SPI, 16x PWM channels 1x timer with 4 alarms, 1x real time clock 2x programmable I/O (PIO) blocks, 8 state machines in total Flexible, user-programmable high-speed I/O Can emulate interfaces such as SD card and VGA Note: Raspberry Pi Pico W I/O voltage is fixed at 3.3 V. Downloads Datasheet Specifications of 3-pin Debug Connector

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Build robust, intelligent machines that combine Raspberry Pi computing power with LEGO components. The Raspberry Pi Build HAT provides four connectors for LEGO Technic motors and sensors from the SPIKE Portfolio. The available sensors include a distance sensor, a color sensor, and a versatile force sensor. The angular motors come in a range of sizes and include integrated encoders that can be queried to find their position. The Build HAT fits all Raspberry Pi computers with a 40-pin GPIO header, including – with the addition of a ribbon cable or other extension device — Raspberry Pi 400. Connected LEGO Technic devices can easily be controlled in Python, alongside standard Raspberry Pi accessories such as a camera module. Features Controls up to 4 motors and sensors Powers the Raspberry Pi (when used with a suitable external PSU) Easy to use from Python on the Raspberry Pi

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