The AxiDraw's pen holder normally holds a pen (or other instrument) either vertically or at 45° from vertical. The Pen clip rotation stage is a lightweight adapter allows you to mount the instrument at arbitrary angles, and fine-tune that angle over a range of 90 degrees with a precision of 1 degree.This adapter is not normally needed in general writing and drawing usage. However certain precision applications of the AxiDraw – particularly those using the AxiDraw as a general purpose XY motion control stage – may find this to be helpful. Some users have also found it useful for fine-tuning the angle that a pen is mounted at when using italic or chisel-tip pens in combination with the Italic pen adapter.You can attach the rotation stage to the front face of the AxiDraw in two orientations, vertical or at 45° from vertical. These orientations, along with the 90°adjustment range, allow you to either adjust between vertical and horizontal, or between vertical and ±45° from vertical. Two small thumbscrews and an engraved bezel allow you to make adjustments and set the angle.Specifications Material: Anodized 6061-T6 aluminum Size: Outer radius 64 mm, height 48 mm, thickness 4.6 mm (excluding mounting hardware) Weight: Approximately 11 g Mounting hardware: included (2 each M3 flat head cap screws, M2 socket cap screws w/washers, 1.5 mm hex wrench) CompatibilityThis adapter is compatible only with AxiDraw V3 family pen plotters that mount the pen on a 2-hole vertical slide. This includes all AxiDraw SE/A3, AxiDraw V3/A3 and AxiDraw V3 XLX units, and all AxiDraw V3 units manufactured after February 2017.

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A low-power, open source, 2.7-inch IoT display powered by an ESP32-S2 module and featuring SHARP's Memory-in-Pixel (MiP) screen technology The Newt is a battery-powered, always-on, wall-mountable display that can go online to retrieve weather, calendars, sports scores, to-do lists, quotes…really anything on the Internet! It is powered by an ESP32-S2 microcontroller that you can program with Arduino, CircuitPython, MicroPython, or ESP-IDF. It's perfect for makers: Sharp’s Memory-in-Pixel (MiP) technology avoids the slow refresh times associated with E-Ink displays A real-time clock (RTC) was added to support timers and alarms The Newt was designed with battery operation in mind; every component on the board was chosen for its ability to operate at low power. Newt was designed to operate 'untethered,' which means it can be mounted in places where a power cord would be inconvenient, for example a wall, refrigerator, mirror, or dry-erase board. With the optional stand, desks, shelves, and nightstands are also good options. Newt is open source, and all design files and libraries are available for review, use, and modification. However, doing that is not required. Each Newt is delivered with working code with the following features: Current weather details Hourly and daily weather forecast Alarm Timer Inspirational quotes Air-quality forecast Habit calendar Pomodoro timer Oblique Strategy cards Only following the Wi-Fi provisioning instructions is needed to get started. No app downloads are required. Specifications Display Sharp Memory LCD Screen Size 2.7 inch Resolution 240 x 400 Deep Sleep Current 30 uA Refresh Rate < 0.001 s Periodic Screen Refresh Required No Input Buttons 10 capacitive pads, 1 push button RTC included Yes Speaker included Yes Power Input USB Type-C Battery included No Programming Languages Arduino, CircuitPython, ESP IDF, MicroPython Dimensions 91 x 61 x 9 mm Microcontroller Espressif ESP32-S2-WROVER Module with 4 MB flash and 2 MB PSRAM Wi-Fi capable Supports Arduino, MicroPython, CircuitPython, and ESP-IDF Deep sleep current as low as 25 μA Display 2.7-inch, 240 x 400 pixel MiP LCD Capable of delivering high-contrast, high-resolution, low-latency content with ultra-low power consumption Reflective mode leverages ambient light to eliminate the need for a backlight Time Keeping, Timers, and Alarms Micro Crystal RV-3028-C7 RTC Optimized for extreme low-power consumption (45 μA) Able to simultaneously manage a periodic timer, a countdown timer, and an alarm Hardware interrupt for timers and alarms 43 bytes of non-volatile user memory, 2 bytes of user RAM Separate UNIX time counter Buzzer Speaker/buzzer with mini class-D amplifier on DAC output A0 can play tones or lo-fi audio clips User Input Power switch Two programmable tactile buttons for Reset and Boot 10 capacitive touchpads Power Newt is designed to operate for one to two months between charges using a 500 mAH LiPo battery. The exact run time varies. (Heavy Wi-Fi use, in particular, will reduce battery charge more quickly.) USB Type-C connector for programming, power, and charging Low-quiescence voltage regulator (TOREX XC6220) that can output 1 A of current and operate as low as 8 μA. JST connector for a Lithium-Ion battery Battery-charging circuity (MCP73831) Low-battery indicator (1 μA quiescence current) Software Newt hardware is compatible with open-source Arduino libraries for ESP32-S2, Adafruit GFX (fonts), Adafruit Sharp Memory Display (display writing), and RTC RV-3028-C7 (RTC) Arduino libraries and sample programs are under development and will be available in our GitHub repository before launch CircuitPython libraries and registration are on the roadmap, with the development of a CircuitPython library for the RV-3028 real-time clock as a key dependency Included Phambili Newt – Fully assembled with pre-loaded firmware Laser-cut desktop stand Mini-magnet feet Required screws Support & Documentation Full instructions for use GitHub: Arduino Library and Codebase GitHub: Board schematics Videos of prototypes or demos (build tracked on Hackaday)

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Features Compatible with Raspberry Pi 4 only Cutout in lid for 40x30mm heatsink or Fan SHIM Super-slimline profile Fully HAT-compatible Protects your beloved Pi Clear top and base leave Raspberry Pi 4 visible GPIO cut-out Handy laser-etched port labels Leaves all ports accessible Made from lightweight, high-quality, cast acrylic Great for hacking and tinkering! Made in Sheffield, UK Weighing just over 50 grams, the case is lightweight and ideal for mounting to any surface. No tools are required for assembly or disassembly. The dimensions are: 99 × 66 × 15 mm. In the video below you can see a quick assembly guide.

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The software simulation of gauges, control-knobs, meters and indicators which behave just like real hardware components on a PC’s screen is known as virtual instrumentation. In this book, the Delphi program is used to create these mimics and PIC based external sensors are connected via a USB/RS232 converter communication link to a PC. Detailed case studies in this Book include a virtual compass displayed on the PC’s screen, a virtual digital storage oscilloscope, virtual -50 to +125 degree C thermometer, and FFT sound analyser, a joystick mouse and many examples detailing virtual instrumentation Delphi components. Arizona’s embedded microcontrollers – the PIC's are used in the projects and include PIC16F84A, PIC16C71, DSPIC30F6012A, PIC16F877, PIC12F629 and the PIC16F887. Much use is made of Microchip’s 44 pin development board (a virtual instrument ‘engine)’, equipped with a PIC16F887 with an onboard potentiometer in conjunction with the PIC’s ADC to simulate the generation of a variable voltage from a sensor/transducer, a UART to enable PC RS232 communications and a bank of 8 LED's to monitor received data is also equipped with an ISP connector to which the ‘PICKIT 2’ programmer may easily be connected. Full source code examples are provided both for several different PIC’s, both in assembler and C, together with the Pascal code for the Delphi programs which use different 3rd party Delphi virtual components.

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in 10 captivating lessons Using the lessons in this book you learn how to program a microcontroller. You’ll be using JAL, a free but extremely powerful programming language for PIC microcontrollers, which enjoys great popularity in the hobby world. Starting out from scratch virtually, you slowly build up the knowledge. No previous knowledge is needed: anyone can get started with this book. Assuming you have absorbed all lessons – meaning you have actually completed all the exercises – you should be confident to write PIC microcontroller programs, as well as read and understand programs written by other people. JAL commands You learn the function of JAL commands such as include, pin, delay, forever loop, while loop, case, exit loop, repeat until, if then, as well as the use of functions, procedures and timer- and port interrupts. JAL programs You make an LED blink, build a time switch, measure a potentiometer’s wiper position, produce sounds, suppress contact bounce, and control the brightness of an LED. And of course you learn to debug, meaning: how to spot and fix errors in your programs. Hardware You learn to recognize various components including the PIC microcontroller, potentiometer and quartz crystal, and how to wire up a PIC microcontroller and effectively link it to your PC. A breadboard is used for the purpose, allowing you to easily modify the component arrangement for further experimenting. The companion software with this book can be downloaded free of charge, including the JAL programming language. In addition, you may order a kit of parts so you don’t have to go shopping for the required components. Especially for a beginner, this is the easiest way to start with this unique pastime. Having finished this book does not mean you are through with your pastime. You can get your hands dirty again, and if desired use other books packed with fun projects using the JAL programming language. More information may be found at the end of the lessons in the chapter "Done! What’s next?""

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Turn your Raspberry Pi into a retro games console! Picade X HAT includes joystick and button inputs, a 3 W I²S DAC/amplifier, and soft power switch. This HAT has all the same great features as the original Picade HAT but now has no-fuss female Dupont connectors to hook up your joystick and buttons. Simply pop Picade X HAT onto your Pi, plug a USB-C power supply into the connector on the HAT (it back-powers your Pi through the GPIO, so no need for a separate power supply), wire up your controls, and install the driver! It's ideal for your own DIY arcade cabinet builds, or for interfaces that need big, colourful buttons and sound. Features I²S audio DAC with 3 W amplifier (mono) and push-fit terminals Safe power on/off system with tactile power button and LED USB-C connector for power (back-powers your Pi) 4-way digital joystick inputs 6x player button inputs 4x utility button inputs 1x soft power switch input 1x power LED output Plasma button connector Breakout pins for power, I²C, and 2 additional buttons Picade X HAT pinout Compatible with all 40-pin Raspberry Pi models The I²S DAC blends both channels of digital audio from the Raspberry Pi into a single mono output. This is then passed through a 3 W amplifier to power a connected speaker. The board also features a soft power switch that allows you turn your Pi on and off safely without risk of SD card corruption. Tap the connected button to start up, and press and hold it for 3 seconds to fully shutdown and disconnect power. Software/Installation Open a terminal and type curl https://get.pimoroni.com/picadehat | bash to run the installer. You'll need to reboot once the installation is complete, if it doesn't prompt you to do so. The software does not support Raspbian Wheezy Notes With USB-C power connected through Picade X HAT you'll need either to tap the connected power button or the button marked 'switch' on the HAT to power on your Pi.

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This PiCAN 2 board provides CAN-Bus capability for the Raspberry Pi 2/3. It uses the Microchip MCP2515 CAN controller with MCP2551 CAN transceiver. Connection are made via DB9 or 3-way screw terminal. This board includes a switch mode power suppler that powers the Raspberry Pi is well. Easy to install SocketCAN driver. Programming can be done in C or Python. Not suitable for Raspberry Pi 4, please use PiCAN 3 instead. Features CAN v2.0B at 1 Mb/s High speed SPI Interface (10 MHz) Standard and extended data and remote frames CAN connection via standard 9-way sub-D connector or screw terminal Compatible with OBDII cable Solder bridge to set different configuration for DB9 connector 120Ω terminator ready Serial LCD ready LED indicator Foot print for two mini push buttons Four fixing holes, comply with Pi Hat standard SocketCAN driver, appears as can0 to application Interrupt RX on GPIO25 5 V/1 A SMPS to power Raspberry Pi and accessories from DB9 or screw terminal Reverse polarity protection High efficiency switch mode design 6-20 V input range Optional fixing screws – select at bottom of this webpage Downloads User guide Schematic Rev B Writing your own program in Python Python3 examples in Github

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The Piccolino rapid development board can be used to design microcontroller circuits quickly. The Piccolino has a fast 16f887 PIC microcontroller, voltage regulator, and communications module, and can be easily extended using its four headers. This e-book contains 30 projects based on the Piccolino. We'll use its unique communications facilities and get the Piccolino to communicate with programs on a PC. On the PC, we use the free programming language Small Basic. You can use this to create Windows programs with buttons and graphs quickly. You will learn how to analyze components such as inductors, capacitors, and OPAMPs, and how to display the measurement results in a graphical format. This will help you to design your circuits easily. We will then start to adapt to the Piccolino. We'll add components to it to make it more powerful, with extra features such as flow control and digital to analog conversion. The clear instructions will enable you to design and build your adaptations. This way you can make your custom designed Piccolino. We'll end up making an extension: a PCB that that can be mounted on the Piccolino headers. As an example, we'll design and build an extension for an LCD. You can use the included board layout to make your PCB or have it made for you. At the same time, you will learn how to make your extensions. The only limitation is your imagination! The clear descriptions along with circuit diagrams and photos, will make the building of these projects an enjoyable experience. Each project has a clear explanation of the reasons why it was designed in a particular way. This helps you learn a lot about the Piccolino, as well as Small Basic, and the components that are used in this e-book. You can adapt the projects to suit your requirements or combine several projects.

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The Arduino Uno is an open-source microcontroller development system encompassing hardware, an Integrated Development Environment (IDE), and a vast number of libraries. It is supported by an enormous community of programmers, electronic engineers, enthusiasts, and academics. The libraries in particular really smooth Arduino programming and reduce programming time. What’s more, the libraries greatly facilitate testing your programs since most come fully tested and working. The Raspberry Pi 4 can be used in many applications such as audio and video media devices. It also works in industrial controllers, robotics, games, and in many domestic and commercial applications. The Raspberry Pi 4 also offers Wi-Fi and Bluetooth capability which makes it great for remote and Internet-based control and monitoring applications. This book is about using both the Raspberry Pi 4 and the Arduino Uno in PID-based automatic control applications. The book starts with basic theory of the control systems and feedback control. Working and tested projects are given for controlling real-life systems using PID controllers. The open-loop step time response, tuning the PID parameters, and the closed-loop time response of the developed systems are discussed together with the block diagrams, circuit diagrams, PID controller algorithms, and the full program listings for both the Raspberry Pi and the Arduino Uno. The projects given in the book aim to teach the theory and applications of PID controllers and can be modified easily as desired for other applications. The projects given for the Raspberry Pi 4 should work with all other models of Raspberry Pi family. The book covers the following topics: Open-loop and closed-loop control systems Analog and digital sensors Transfer functions and continuous-time systems First-order and second-order system time responses Discrete-time digital systems Continuous-time PID controllers Discrete-time PID controllers ON-OFF temperature control with Raspberry Pi and Arduino Uno PID-based temperature control with Raspberry Pi and Arduino Uno PID-based DC motor control with Raspberry Pi and Arduino Uno PID-based water level control with Raspberry Pi and Arduino Uno PID-based LED-LDR brightness control with Raspberry Pi and Arduino Uno

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The Arduino Uno is an open-source microcontroller development system encompassing hardware, an Integrated Development Environment (IDE), and a vast number of libraries. It is supported by an enormous community of programmers, electronic engineers, enthusiasts, and academics. The libraries in particular really smooth Arduino programming and reduce programming time. What’s more, the libraries greatly facilitate testing your programs since most come fully tested and working. The Raspberry Pi 4 can be used in many applications such as audio and video media devices. It also works in industrial controllers, robotics, games, and in many domestic and commercial applications. The Raspberry Pi 4 also offers Wi-Fi and Bluetooth capability which makes it great for remote and Internet-based control and monitoring applications. This book is about using both the Raspberry Pi 4 and the Arduino Uno in PID-based automatic control applications. The book starts with basic theory of the control systems and feedback control. Working and tested projects are given for controlling real-life systems using PID controllers. The open-loop step time response, tuning the PID parameters, and the closed-loop time response of the developed systems are discussed together with the block diagrams, circuit diagrams, PID controller algorithms, and the full program listings for both the Raspberry Pi and the Arduino Uno. The projects given in the book aim to teach the theory and applications of PID controllers and can be modified easily as desired for other applications. The projects given for the Raspberry Pi 4 should work with all other models of Raspberry Pi family. The book covers the following topics: Open-loop and closed-loop control systems Analog and digital sensors Transfer functions and continuous-time systems First-order and second-order system time responses Discrete-time digital systems Continuous-time PID controllers Discrete-time PID controllers ON-OFF temperature control with Raspberry Pi and Arduino Uno PID-based temperature control with Raspberry Pi and Arduino Uno PID-based DC motor control with Raspberry Pi and Arduino Uno PID-based water level control with Raspberry Pi and Arduino Uno PID-based LED-LDR brightness control with Raspberry Pi and Arduino Uno

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PiKVM V3 is an open-source Raspberry Pi-based KVM over IP device. It will help you to manage servers or workstations remotely, whatever the state of the operating system or whether one is installed. PiKVM V3 allows you to turn on/off or restart your computer, configure the UEFI/BIOS, and even reinstall the OS using the virtual CD-ROM or flash drive. You can use your remote keyboard and mouse or PiKVM can simulate a keyboard, mouse, and a monitor, which are then presented in a web browser as if you were working on a remote system directly. Features HDMI Full HD capture based on the TC358743 chip (extra low latency ~100 ms and many features like compression control). OTG Keyboard & mouse; Mass Storage Drive emulation. Ability to simulate 'removal and insertion' for USB. Onboard ATX power control Onboard fan controller Real-time clock (RTC) RJ-45 and USB serial console port (to manage PiKVM OS or to connect with the server). Optional AVR-based HID (for some rare and strange motherboards whose BIOS doesn't understand the OTG emulated keyboard). Optional OLED screen to display network status or other desired information. Ready-made board. No need for soldering or breadboarding. PiKVM OS – the software is fully open. Included PiKVM V3 HAT board for Raspberry Pi 4 USB-C bridge board – to connect the HAT with Pi over USB-C ATX controller adapter board and wiring – to connect the HAT to the motherboard (if you want to manage power supply through hardware). 2 flat CSI cables Screws and brass standoffs Required Raspberry Pi 4 MicroSD card USB-C to USB-A cable HDMI cable Straight Ethernet cable (for the ATX expansion board connection) Power supply unit (5.1 V/3 A USB-C, officiel RPi power supply is recommended) Downloads User Guide Images GitHub Links The PiKVM Project and Lessons Learned: Q&A with PiKVM creator and developer Maxim Devaev PiKVM: Raspberry Pi as a KVM Remote Control

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This anodised aluminium heatsink case will protect your Raspberry Pi 4 and give you very effective passive cooling. It's great in cases where you want completely silent cooling, for instance, if you're building a home media center. The scope of delivery includes a thermal pad to provide thermal contact between the CPU and top case, and a handy Allen key and set of hex bolts to attach the case together. The case gives you access to all of the ports, pins, and connectors. Features Anodised aluminium top and bottom case Heatsink fins Thermal pad Hex bolts and Allen key included Access to all ports, pins, and connectors Compatible with Raspberry Pi 4 Assembly Assembling your heatsink case is pretty easy and should only take a couple of minutes. The first, and most important thing is to make sure that your Pi is powered off and unplugged before you fit the case. Take one of the thermal pads and peel the protective films off both sides of it (there's a white film and an easy-to-miss clear film on the other side. Stick the thermal pad onto your Pi's CPU (the metal square nearest the middle of the PCB). Sticking the thermal pad to the CPU first is a much better way to position it correctly than trying to stick it to the case. Only use one thermal pad with the Raspberry Pi 4. Position the top case and then, holding it in place, flip the whole thing over and position the bottom case on the underside of your Pi. Use the four hex bolts and allen key to secure the case. Notes The case is metal and hence conductive, so be careful not to short any components on it, and ensure that your RPi is powered off and unplugged when fitting the case It may be obvious, but the case will get hot in use Dimensions: 87 × 56 × 25.5 mm

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SHIM is an old Yorkshire term meaning 'Shove Hardware In Middle' - we use it for Raspberry Pi add-ons that are designed to be sandwiched between your Pi and a HAT or mini HAT. This one has a clever friction fit header that slips handily over your GPIO pins, doesn't need soldering*, and is easily removable. The MAX98357A combined DAC / amplifier chip takes high-quality digital audio from your Pi and amplifies it so it can be used with an unpowered speaker. The push-fit connectors make it straightforward to connect up your speaker, whether it's a bookshelf or floor-standing speaker, the speaker in an old radio, or any other speaker you might have laying around. Because Audio Amp SHIM adds no extra bulk to your Pi it's perfect for building into a compact enclosure - you could use it to make a tiny MP3 player to play local files or stream from services like Spotify, give a vintage radio the ability to play digital radio streams or incorporate bleepy noises into your very own retro handheld. It's also a handy way to add audio output to your Pi Zero or Pi 400! Please note: Raspberry Pi and speakers are not included with this board. Features MAX98357A DAC / amplifier chip Mono 3W audio out Push-fit speaker terminals SHIM-format board with friction-fit connectors 2x mounting holes (M2.5) for if you want to secure everything together with bolts Fully-assembled No soldering required (*unless you're using a Pi that comes without a header) Compatible with all 40-pin header Raspberry Pi models Software The easiest way to get everything set up is to use Pimoroni's Pirate Audio software and installer which configures I2S audio, as well as installing Mopidy and our custom Pirate Audio plugins which will let you stream Spotify and play local files. Here's how to get started: Set an SD card up with the latest version of Raspberry Pi OS. Connect to Wi-Fi or a wired network. Open a terminal and type the following:git clone https://github.com/pimoroni/pirate-audiocd pirate-audio/mopidysudo ./install.sh Reboot your Pi Downloads MAX98357A Datasheet Pirate Audio software Schematic

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An all-in-one, Pico W powered industrial/automation controller with 2.46 GHz wireless connectivity, relays and a plethora of inputs and outputs. Compatible with 6 V to 40 V systems. Automation 2040 W is a Pico W / RP2040 powered monitoring and automation board. It contains all the great features from the Automation HAT (relays, analog channels, powered outputs and buffered inputs) but now in a single compact board and with an extended voltage range so you can use it with more devices. Great for controlling fans, pumps, solenoids, chunky motors, electronic locks or static LED lighting (up to 40 V). All the channels (and the buttons) have an associated indicator LED so you can see at a glance what's happening with your setup, or test your programs without having hardware connected. Features Raspberry Pi Pico W Aboard Dual Arm Cortex M0+ running at up to 133 Mhz with 264 kB of SRAM 2 MB of QSPI flash supporting XiP Powered and programmable by USB micro-B 2.4 GHz wireless 3x 12-bit ADC inputs up to 40 V 4x digital inputs up to 40 V 3x digital sourcing outputs at V+ (supply voltage) 4 A max continuous current 2 A max current at 500 Hz PWM 3x relays (NC and NO terminals) 2 A up to 24 V 1 A up to 40 V 3.5 mm screw terminals for connecting inputs, outputs and external power 2x tactile buttons with LED indicators Reset button 2x Qw/ST connectors for attaching breakouts M2.5 mounting holes Fully assembled No soldering required. C/C++ and MicroPython libraries Schematic Dimensional drawing Power Board is compatible with 12 V, 24 V and 36 V systems Requires supply 6-40 V Can provide 5 V up to 0.5 A for lower voltage applications Software Pirate-brand MicroPython Getting Started with Raspberry Pi Pico MicroPython examples MicroPython function reference C++ examples C++ function reference Getting Started with Automation 2040 W

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