Build an Arduino-Controlled AM/FM/SW Radio

Combine the Si4844-A10 analog-tuned radio receiver with an Arduino to make a full-featured multiband radio. The idea of a single chip radio is intriguing. The prospect is especially interesting to me because, frankly, I envy the analog skills I associate with building a radio receiver. When I browsed the circuit literature in the area, I came across the Silicon Labs collection. One of their chips, the Si484 ...

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Smart Thermostat

Connect your home heater to Internet and chat with it via Telegram! Story Connect to this smart thermostat by simply texting it, no need of extra dashboards or platforms. Understanding Telegram Bots Telegram offers a super useful set of API you can use in your projects. You can host a bot on you Arduino board and chat with it using a simple library called Telegram Bot. You can install this library via the L ...

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ESP8266: SSD1306 Oled Library Release

The “ESP8266 OLED SSD1306″ is an open source library which allows you to control those pretty OLED modules from our beloved ESP8266 module. Fabrice Weinberg cleaned up all the ugly pieces of code which I initially wrote caused by my near C/C++ illiteracy. He also added support for Pasko’s BRZO I2C library which is partially written in assembler and allows a much higher throughput over the I2C channel. Fabri ...

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Weather Station for Drones

The project consists of a kit for drones that includes an electronic device that functions as a meteorological station. Story The project consists of a kit for drones that includes an electronic device that functions as a meteorological station used for monitoring the values of environmental temperature, of atmospheric pressure and of humidity. The whole device'll work thanks to Arduino/Genuino MKR1000. The ...

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Arduino Bluetooth Tutorial HC-05

Bluetooth has been around for quite a while now. Being a common way to communicate with mobile phones, it was only natural to include this protocol in the Arduino arena.   Bluetooth is typically a low power, medium range device, in fact it can reach up to 10 meters. Bluetooth operates on the same frequencies as WiFi, 2.4Ghz.Connections are normally one to one meaning no group communication is allowed by the ...

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Visibility sensor for divers

Planning a scuba dive will be much easier with the data of visibility sensors on the divespot. Story When you're planning a scuba dive, it's nice to know the visibility of the water at the dive spot. This system will contain a sensor module in the water with a temperature sensor and a visibility sensor. The MKR1000 on the side of the water will send the data wireless to the closest WiFi-hotspot (a diving ce ...

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Tiny Precision Digital Humidity sensor

The new digital SHT3x humidity sensor series takes sensor technology to a new level. As the successor of the SHT2x series it is determined to set the next industry standard in humidity sensing. The SHT3x humidity sensor series consists of a low-cost version with the SHT30 humidity sensor, a standard version with the SHT31 humidity sensor, and a high-end version with the SHT35 humidity sensor. The SHT3x humi ...

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Viseesaw

Viseesaw uses the figure of a seesaw, to show metaphorically the inequality of two physical, conceptual or social realities. Story Viseesaw uses the figure of a seesaw, to show metaphorically the inequality of two physical, conceptual or social realities. The swinging movement of the seesaw is done by a stepper motor which is controlled by MKR1000. The inputs would come from two cases that could switch duri ...

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Battery-pack fuel gauge with SHA-256 authentication prevents pack cloning

Description The MAX1720x/MAX1721x are ultra-low power stand-alone fuel gauge ICs that implement the Maxim ModelGauge™ m5 algorithm without requiring host interaction for configuration. This feature makes the MAX1720x/MAX1721x excellent pack-side fuel gauges. The MAX17201/MAX17211 monitor a single cell pack. The MAX17205/MAX17215 monitor and balance a 2S or 3S pack or monitor a multiple-series cell pack. To ...

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Program MKR Over-the-Air + Goodies: Voice Control, etc.

Secure OTA via Azure. Control via voice capable UWP app. Includes sample: room thermostat controlled via phone. Story Overview Our contribution has 2 parts. Part 1: A collection of reusable components. They can serve as a framework for building various IoT projects that leverage useful features: Over-the-Air (OTA) programming of the Arduino MKR1000 (i.e. uploading the compiled binary code). Several methods ...

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How to Improve Buck Converter Light Load Efficiency with an LDO

Designing a DC/DC converter that only consumes micro amps of current at no load can be compared to fueling a muscle car with lighter fluid – you may get it to work, but it won’t be easy. High efficiency at full load currents is commonplace in most modern DC/DC converters; however, achieving high efficiency when the load is disabled or disconnected is still a difficult and/or expensive task. Many automotive ...

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Audible Vision

Duffy the mobile robot moves alongside you connected through a "light leash" and alerts you of objects around the path. Story 1)    Background Audible Vision is designed to alert a person of objects around them. The project’s brain is the Arduino Uno, which is wired up with two IR Distance Sensors to tell you how far an object is. Mounted onto the Arduino is a Bluefruit EZ-link Bluetooth shield that connect ...

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