Search results for "bert van dam"
Pimoroni Fan SHIM - Active Cooling for Raspberry Pi 4
When Raspberry Pi 4's system on chip (SoC) achieves a certain temperature, it lowers its operating speed to protect itself from harm. As a result, you don't get maximum performance from the single board computer. Fan SHIM is an affordable accessory that effectively eliminates thermal throttling and boosts the performance of RPi 4. It's quite easy to attach the fan SHIM to Raspberry pi: fan SHIM uses a friction-fit header, so it just slips onto your Pi's pins and it's ready to go, no soldering required! The fan can be controlled in software, so you can adjust it to your needs, for example, toggle it on when the CPU reaches a certain temperature etc. You can also program the LED as a visual indicator of the fan status. The tactile switch can also be programmed, so you can use it to toggle the fan on or off, or to switch between temperature-triggered or manual mode. Features 30 mm 5 V DC fan 4,200 RPM 0.05 m³/min air flow 18.6 dB acoustic noise (whisper-quiet) Friction-fit header No soldering required RGB LED (APA102) Tactile switch Basic assembly required Compatible with Raspberry Pi 4 (and 3B+, 3A+) Python library and daemon Pinout Scope of delivery Fan SHIM PCB 30 mm 5 V DC fan with JST connector M2.5 nuts and bolts Assembly The assembly is really simple and almost takes no time With the component side of the PCB facing upwards, push the two M2.5 bolts through the holes from below, then screw on the first pair of nuts to secure them and act as spacers. Push the fan's mounting holes down onto the bolts, with the cable side of the fan downwards (as pictured) and the text on the fan upwards. Attach with another two nuts. Push the fan's JST connector into the socket on Fan SHIM. Software With the help of Python library you can control the fan (on/off), RGB LED, and switch. You'll also find a number of examples that demonstrate each feature, as well as a script to install a daemon (a computer program that runs as a background process) that runs the fan in automatic mode, triggering it on or off when the CPU reaches a threshold temperature, with a manual override via the tactile switch.
€ 13,95
Members € 12,56
Sequent Microsystems Smart Fan HAT for Raspberry Pi
Raspberry Pi 4 was welcomed by the Pi enthusiasts for the increased processing power. However, this came at a price. The RPi 4 can draw up to 3 Amps, which means it has to dissipate 15 W of power. Raspberry Pi cooling is a must. From the simplest passive heat sink, through elaborate fan blowers and even to an exotic water-cooled idea, many options are available.The Smart Fan has the form factor of the Raspberry Pi HAT. Its own tinny 32-bit processor receives commands from Raspberry Pi through the I²C interface. A step-up power supply converts the 5 V provided by Raspberry Pi to 12 V, ensuring precise speed control. Using pulse width modulation, it powers the fan just enough to maintain a constant temperature of the Raspberry Pi processor.The Smart Fan preserves all the GPIO pins, allowing any number of cards to be stacked on top of Raspberry Pi. If another add-on card has to dissipate power, a secondary Smart Fan can be added to the stack.DIN-Rail MountingTogether with multiple add-on cards, the Smart Fan can be installed on the DIN-Rail, for sturdy industrial applications.Stack Level JumperTwo Smart Fans can be installed on top of each Raspberry Pi. The assumption is that you have one more card in the stack which requires cooling. The bottom side of the Smart Fan has a jumper which needs to be installed on the second fan, in order for the Raspberry Pi to differentiate the two I²C addresses.Features 40 x 40 x 10 mm fan with 6 CFM airflow Step-up 12 V power supply for precise fan speed control PWM Controller modulates the fan to keep constant Pi temperature Draws less than 100 mA of power Stackable to itself, 2 fans can be added to Raspberry Pi Fully stackable allows adding other cards to Raspberry Pi Uses only I²C interface, leaves full use of all GPIO pins Super quiet and efficient Included Smart Han HAT 40 x 40 x 10 mm Fan with mounting Screws Mounting Hardware Downloads User's Guide Open Source Hardware Schematic 2D CAD Drawing Command line Python Libraries Node-Red Nodes
€ 24,95
Members € 22,46
Elektor Digital The Ultimate Compendium of Sensor Projects (E-book)
40+ Projects using Arduino, Raspberry Pi and ESP32 This book is about developing projects using the sensor-modules with Arduino Uno, Raspberry Pi and ESP32 microcontroller development systems. More than 40 different sensors types are used in various projects in the book. The book explains in simple terms and with tested and fully working example projects, how to use the sensors in your project. The projects provided in the book include the following: Changing LED brightness RGB LEDs Creating rainbow colours Magic wand Silent door alarm Dark sensor with relay Secret key Magic light cup Decoding commercial IR handsets Controlling TV channels with IT sensors Target shooting detector Shock time duration measurement Ultrasonic reverse parking Toggle lights by clapping hands Playing melody Measuring magnetic field strength Joystick musical instrument Line tracking Displaying temperature Temperature ON/OFF control Mobile phone-based Wi-Fi projects Mobile phone-based Bluetooth projects Sending data to the Cloud The projects have been organized with increasing levels of difficulty. Readers are encouraged to tackle the projects in the order given. A specially prepared sensor kit is available from Elektor. With the help of this hardware, it should be easy and fun to build the projects in this book.
€ 29,95
Members € 23,96
Makerfabs Makerfabs 6 DOF Robot Arm with Raspberry Pi Pico
Raspberry Pi Pico is a great solution for servo control. With the hardware PIO, the Pico can control the servos by hardware, without usage of times/ interrupts, and limit the usage of the MCU. Driving the six servos on this robotic arm takes very little MCU capacity, so the MCU can deal with other tasks easily. This 6 DOF robotic arm is a handy tool for teaching and learning robotics and Pico usage. There are five MG996s (four are needed in the assembly and one for backup) and three 25-kg servos (two needed in the assembly and one for backup). Note that for the servos the angle ranges from 0° to 180°. All the servos need to be preset to 90° (with logic HIGH 1.5 ms duty) before the assembly to avoid servo damage during movement. This product includes all the necessary items needed to create a robotic arm based on Pico and Micropython. Included 1x Raspberry Pi Pico 1x Raspberry Pi Pico Servo Driver 1x Set "6 DOF Robot Arm" 1x 5 V/5 A Power Supply 2x Backup Servo Downloads GitHub Wiki Assembly Guide Assembly Video
€ 139,95
Members € 125,96
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, by Burkhard Kainka RTL-SDR Blog V4, Better Than V3? (Review)
RTL-SDR Blog sticks have been around for a while. They can receive HF signals up to 1,000 MHz or higher. The RTL-SDR Blog V4 is...
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, by Burkhard Kainka First Experiences With HackRF One – a Review
When I first held the HackRF One in my hand, I knew almost nothing about it, except that it is an SDR receiver and transmitter...
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, by Jean-François Simon LCR Meter: The UNI-T UT603 (Review)
Looking for a portable LCR meter? Check out the features and uses for the UNI-T UT603 LCR meter in our detailed review!
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, by Clemens Valens Two New Arduino UNO R4 Boards: Minima and WiFi
The powerful Arduino UNO R4 is the newest member of the iconic Arduino UNO family. It even comes in two versions. Let's take a look...
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, by Clemens Valens Trying Out the Joy-it JT-PS1440-C 1.5 kW Power Supply (Review)
In these days of e-bikes, electric scooters and other vehicles, powerful programmable power supplies are essential for testing motors and charging batteries. Your faithful old...
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, by Clemens Valens Review: The Andonstar AD249S-M Digital Microscope Magnifies Up To 2040 Times
The Andonstar AD249S-M is a digital microscope with a 10” display and a magnification factor of up to 2040 times. It comes with three lenses,...
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, by Jean-François Simon The RC-RICK-868-EV Wireless Modem: A Compelling Addition to Your Workbench
The RC-RICK-868 is a radio modem with a UART interface using LoRa modulation, designed for easy point-to-point communication. Let's take a look.
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, by Harry Baggen Is the Hioki DT4256 Your Next Multimeter?
Every electrical engineer and serious electronics maker needs a good multimeter, but choosing one can be a challenge. Let's consider the affordable Hioki DT4256.