code, circuits, & construction | code and fabrication resources for physical computing and networking There are several ways to save data from a sensor attached to an Arduino. If you’re connected to a personal computer, you can simply send the data from the Arduino to the personal computer serially, and save it to a file. If you’ve got an SD card attached to the microcontroller, you can save the data to the card. Or, if you have access to the internet and a device that can connect to a server, you can save the data to a server. In the tutorial below, you’ll read a DHT11 temperature and humidity sensor and log data in three ways: Serial transmission to a personal computer, and serial capture to a file.Saving data to an SD card mounted on the ArduinoHTTP upload to pachube.com via an Ethernet shield or Ethernet Arduino. Hardware you need: personal computerEthernet Arduino and USB-to-serial connector, or Arduino Uno and Ethernet shield (or equivalents)SD Micro cardDHT11 temperature and humidity sensor10-kilohm resistor Software you need: Concepts you should know: Connecting the sensor Update
RF24Network for Wireless Sensor Networking | maniacbug RF24Network is a network layer for Nordic nRF24L01+ radios running on Arduino-compatible hardware. It’s goal is to have an alternative to Xbee radios for communication between Arduino units. It provides a host address space and message routing for up to 6,000 nodes. The layer forms the background of a capable and scalable Wireless Sensor Network system. At the same time, it makes communication between even two nodes very simple. Today, I managed to get 17 nodes running on a single network. Hardware The fastest way to get RF24Network-compatible hardware is to build the Getting Started board, or the ProtoShield board as explained in other posts, attached to commercially-available Arduino. Ultimately, I wanted something smaller, cheaper and more power-efficient, so I built a Low Power Wireless Sensor Node. Simple Transmit/Receive The Hello World examples illustrate how simple it is to communicate between two nodes. There are three simple sections: Static Initialization setup() Receiver loop()
How to build an arduino energy monitor Including voltage measurement via AC-AC voltage adapter and current measurement via a CT sensor. This guide details how to build a simple electricity energy monitor on that can be used to measure how much electrical energy you use in your home. It measures voltage with an AC to AC power adapter and current with a clip on CT sensor, making the setup quite safe as no high voltage work is needed. The energy monitor can calculate real power, apparent power, power factor, rms voltage, rms current. All the calculations are done in the digital domain on an Arduino. Step One – Gather Components You will need: 1x Arduino Voltage sensing electronics: 1x 9V AC-AC Power Adapter 1x 100kOhm resistor for step down voltage divider. 1x 10kOhm resistor for step down voltage divider. 2x 470kOhm (for voltage divider, any matching value resistor pair down to 10K) 1x 10uF capacitor Current sensing electronics 1x CT sensor SCT-013-000 1x Burden resistor 18 Ohms if supply voltage is 3.3V or 33 Ohms if supply voltage is 5V.
ArduinoBoardLeonardo Overview The Arduino Leonardo is a microcontroller board based on the ATmega32u4 (datasheet). It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. The Leonardo differs from all preceding boards in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary processor. Summary Schematic & Reference Design EAGLE files: arduino-leonardo-reference-design.zip Schematic: arduino-leonardo-schematic-rev3b.pdf Power The Arduino Leonardo can be powered via the micro USB connection or with an external power supply. External (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or battery. The power pins are as follows: VIN. Memory AREF.
The Ham Whisperer: Ham Courses Here is a compilation of all the course lessons done so far. If you have trouble with one of the questions on the quizes or practice exams, take note of which section from the question pool your question is associated with and find the lesson below. If you ever have any questions, please leave them in the comments box. Thanks! Technician Class License Course (Valid through June 2018) Top 10 DIY Arduino Projects and HOW-TO Tutorials! Arduino has been widely popular among hackers and DIY-addicts out there for modding/hacking things. For those of you just entering the Arduino world, here’s a bunch of great Arduino tutorials/projects that can help you jump-start your next project. 1) Did you know that you can program/flash your Arduino wirelessly? For those of you who are going to be making devices where the Arduino is hidden from easy access, read up on how you can program your Arduino wirelessly using Xigbee modules over at Lady Ada’s site. 2) Arduinome is a project the Monome for audio sequencers. 3) For energy eco-projects, you can refer to this great site on OpenEnergyMonitor, which uses Arduino and complete details are provided for making your own home energy monitor. 4) DIY Arduino Earthquake Seismic Detector can actually detect earthquakes, perhaps great for any project requiring sensing of vibrations and whatnot. 5) Need some resources on robots using Arduino? 9) The Magic Mirror is one of my all-time favorites.
CHIPPER BOARD | Built By Ben For sale Created to make ATtiny chips easier to work with the Chipper Shield – a custom PCB – is on its 3rd generation and encompasses all of the core components to get your next project up and running. Purchase A Chipper – Chipper Circuit Board Files - Sponsors 100% Arduino compatibleProgram ATtiny 85/45/25/15/13 84/44/24 2313/4313 chips.Debug your program through 2 LEDs and broken out sensor port.Compatible with either an Arduino board or AVR programmerHouse sensors on the proto area of the board with access to broken out power and ground.Reset a chip mid-program through the reset button. Chipper Board Companion Guides: Datasheets: Photos: Like this: Like Loading...
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