RFM69 output power

As I was mentioning in my 1000.1000 Hardware selection, I have opted for the cool RFM69HW radio module. Weirdly enough, in quite a few sources (big distributor and ebay) the higher power HW module is cheaper. So there ie no reason not to get the higher power module, given quantity discounts. But I want it to operate at lower power most of times. The datasheet does not show any differences at lower power, so ...

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A NEARLY PRACTICAL 6502 BREADBOARD COMPUTER

Over the years we’ve seen a number of homebrew 6502 computers assembled with little more than a breadboard, a sack full of jumper wires, and an otherworldly patience that would make a Buddhist Monk jealous. Anyone who takes the time to assemble a fully functional computer on a half-dozen breadboards lined up on their workbench will always be a superstar in our book. While we’re still too lazy to attempt one ...

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Arduino Environmental Monitoring

Periodically measure environmental conditions and send them to WolkAbout IoT Platform to monitor the environment remotely. Things used in this project Hardware components Arduino MKR1000 × 1 MikroElektronika Environment click × 1 Software apps and online services Arduino IDE WolkAbout IoT Platform Hand tools and fabrication machines Adafruit Female/Female jumper wires Story Introduction We had some Environm ...

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VINTAGE CAMERA FLASH TURNED OLED DESK CLOCK

After covering a few of his builds at this point, we think it’s abundantly clear that [Igor Afanasyev] has a keen eye for turning random pieces of antiquated hardware into something that’s equal parts functional and gorgeous. He retains the aspects of the original which give it that unmistakable vintage look, while very slickly integrating modern components and features. His work is getting awfully close to ...

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Accessible Microfluidics Devices With Ultimaker

Researchers at Cardiff University use 3D printing to create small devices that move small volumes of fluid and are used in various areas of research. 3D printing makes it possible to share the devices with other researchers, making the study of microfluidics more accessible to a wider audience. The 3D printed devices offer a cost-effective alternative to the traditional ones, which are expensive and require ...

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NanoEVB & PicoEVB – Xilinx Artix Developemtn kits

The Xilinx Artix dev kits that fit in your laptop. A convenient, affordable way to explore Xilinx PCIe IP. PicoEVB is an affordable, open source, development board which can be used to evaluate and prototype PCI Express designs using a Xilinx Artix 7 FPGA on Windows or Linux hosts. The boards are designed around the Artix 7 (XC7A50T). Use Cases While the main intent of PicoEVB is PCIe design prototyping, it ...

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RFID Based Access Control Using Arduino

RFID is a non-contact, automatic identification technology that uses radio signals to identify, track, sort and detect a variety of objects including people, vehicles, goods and assets without the need for direct contact or line-of-sight contact (as found necessary in bar code technology). RFID technology can track movement of objects through a network of radio-enabled scanning devices over a distance of se ...

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Smart Connected Open Source Pot (Scopot)

A Smart Pot that has all the component inside of the pot and gives the light and humidity data to the web Things used in this project Hardware components Arduino MKR1000 × 1 Solid State Relay × 1 Jumper wires (generic) × 1 Breadboard (generic) × 1 SparkFun water pump × 1 Software apps and online services Arduino IDE Ubidots Hand tools and fabrication machines rotary rool Story The pot will be using soil moi ...

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SIMPLE ULTRASOUND MACHINE SHOWS THE SKELETON LURKING INSIDE US ALL

That first glimpse of a child in the womb as a black and white image on a screen is a thrilling moment for any parent-to-be, made possible by several hundred thousand dollars worth of precision medical instrumentation. This ultrasound machine cobbled together from eBay parts and modules is not that machine by a long shot, but it’s still a very cool project that actually gives a peek inside the skin. The ult ...

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YouTube Subscriber Counter With ESP8266

I was inspired by the Play Button awards YouTube sends out for subscriber milestones and whipped up a simple circuit using an ESP8266 wifi board and seven segment display to show off my realtime subscriber count. This is a great IoT beginner project, with just a little soldering and a code personalization required to make it work for your own account. I made a version 2 that supports more than 10K subscribe ...

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Sculpto+, An Affordable User-Friendly Wireless 3D Printer

Two years ago, the Sculpto 3D printer appeared to make 3D printing more affordable and user-friendly for everyone. Recently, the new version Sculpto+ came with more useful features, making it a unique printer with the same printing area and price range. The Sculpto+ printer is a compact printer for beginners, kids and adults to start with 3D printing in a simple way. In addition to small size and lightweigh ...

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IoT Cloud – Getting Started

Get familiar with the Arduino IoT Cloud and take your first steps into the world of connected objects. Things used in this project Hardware components Arduino MKR1000 A MKR1010 is also a perfect option, or you could use a MKR IOT Bundle (see below) × 1 Arduino MKR IoT Bundle × 1 Breadboard (generic) × 1 LED (generic) A generic 20mA LED × 1 Resistor 221 ohm In our example we used a 150Ω resistor to limit the ...

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