The mbed boards are a series of ARM microcontroller development boards designed for rapid prototyping and this is breakout makes it easy to get up and running with your mbed LPC1768 module. The Raspberry Pi packs plenty of processing power in a small and inexpensive package and that makes it perfect for robot brains! The only problem? The Raspberry Pi may have plenty of low-level hardware peripherals but motor controllers aren’t one of them.

That’s why the RaspiRobot project got started. The RaspiRobot board is an expansion board for the Pi that turns it into a robot controller. Are you a Java developer looking to add advanced hardware I/O capabilities to your Android or PC application? Well then the IOIO-OTG is for you! The IOIO-OTG (pronounced “yo-yo-O-T-G”) is a development board specially designed to do just that.

It features a PIC microcontroller which acts like a bridge that connects an app on your PC or Android device to low-level peripherals like GPIO, PWM, ADC, I2C, SPI, and UART. An app-level library helps you write control code for these low level peripherals in the same way you’d write any other Java app! The pcDuino is a small and high performance, cost effective mini PC platform that runs full-featured operating systems such as Ubuntu and Android ICS. It run at 1GHz ARM Cortex A8 CPU, a Mali 400 core GPU and 1GB DRAM and a onboard storage of 2Gb Flash. A microSD card slot allows storage up to 32Gb. You can also access the UART, ADC, PWM, GPIO and I2C easily with an Arduino like API. A basic 12 button keypad for user input. The buttons are setup in a matrix format. This allows a microcontroller to ’scan’ the 7 output pins to see which of the 12 buttons is being pressed. ]]> http://inmotion.pt/blog/?feed=rss2&p=1510 0 http://inmotion.pt/blog/?p=1473 http://inmotion.pt/blog/?p=1473#comments Tue, 19 Feb 2013 01:52:28 +0000 admin http://inmotion.pt/blog/?p=1473 Fingerprint scanners are awesome. Why use a key when you have one right at the tip of your finger? Unfortunately, they’re usually unreliable or difficult to implement. Well not anymore! We’ve found this great fingerprint module from ADH-Tech that communicates over TTL Serial so you can easily embed it into your next project. The TellyMate Shield equips an Arduino with the ability to send simple text and graphics to a TV. The TellyMate Shield connects to an Arduino board using long headers which extend through the shield. This keeps the pin layout intact and allows another shield to be stacked on top. Arduino uses digital pin1 (TX) to communicate with the TellyMate. Just plug it into your Arduino and use Serial.println() commands to output text onto your TV!!! PNI Corp’s 3-axis magnetometer. Ready for the big time? Low noise, large resolution magnetic field sensing all packed into a user-friendly DIP module at your disposal. Stable over a wide temperature range, the MicroMag3 is a must have for orientation sensing and navigation. This is a SMD non-isolated dc-dc converter that can deliver up to 6A of output current!!! These modules provide precisely regulated output voltage programmable via external resistor and capacitor from 0.59Vdc to 5.5Vdc over a wide range of input voltage (VIN = 4.5 – 14V). We’ve been using and selling Analog Devices’ ADXL accelerometers for a good while now, and now we’ve found another great part in the series! The ADXL362 3-axis accelerometer operates at extremely low power consumption levels. It measures both dynamic acceleration, resulting from motion or shock, and static acceleration, such as tilt. It’s easy to communicate with the ADXL362 over SPI and built-in digital logic even enables autonomous operation for “wake-on-shake” operation. This module uses the newest 2.4GHz nRF24L01+ transceiver from Nordic Semiconductor. This transceiver IC operates in the 2.4GHz band and has many new features! Take all the coolness of the nRF2401A and add some extra pipelines, buffers, and an auto-retransmit feature – very nice! If you need to charge LiPo batteries, this simple charger will do just that, and do it fast! The LiPo Charger Basic is stripped down of all features and just does one thing well – charge 3.7V LiPo cells at a rate of 500mA per hour. It is designed to charge single-cell Li-Ion or Li-Polymer batteries. Check the datasheet below to see if it will work with your battery. The SIS-2 monitors an IR receiver, and when a certain remote code is detected, an output pin will toggle. Two outputs are available and any code on any remote can be taught to the SIS-2. When used with an inexpensive IR receiver module, the SIS-2 recognizes IR signals from 2 independent IR remote control sources, and provides 2 modes of switching for your application. The IR sources can be from the same or multiple remotes. Works with over 99% of IR remotes, both universal and dedicated types. The ATMega32U4 is Atmel’s low-power 8-bit AVR RISC-based microcontroller featuring 32KB self-programming flash program memory, 2.5KB SRAM, 1KB EEPROM, USB 2.0 full-speed/low speed device, 12-channel 10-bit A/D-converter, and JTAG interface for on-chip-debug. If you’ve ever wondered how to control the headlight of a car from a microcontroller, a MOSFET is what you need. This is a very common MOSFET with very low on-resistance and a control voltage (aka gate voltage) that is compatible with any 3-5V microcontroller or mechanical switch. This allows you to control high-power devices with very low-power control mechanisms. This is a very simple, clear infrared LED. These devices operate between 840-850nm and work well for generic IR systems including remote control and touch-less object sensing. ]]> http://inmotion.pt/blog/?feed=rss2&p=1473 0 http://inmotion.pt/blog/?p=1438 http://inmotion.pt/blog/?p=1438#comments Wed, 30 Jan 2013 02:50:22 +0000 admin http://inmotion.pt/blog/?p=1438 The RN41XV is a small form factor, low power Bluetooth radio module offering plug-in compatibility. This module provides Bluetooth connectivity in legacy and existing designs that may have been based upon the 802.15.4 standard. It can be used to replace a XBee radio if used with our XBee Shields. This is the XBee Series 2 module with PCB antenna from Digi. Series 2 improves on the power output and data protocol. Series 2 modules allow you to create complex mesh networks based on the XBee ZB ZigBee mesh firmware. These modules allow a very reliable and simple communication between microcontrollers, computers, systems, really anything with a serial port! Point to point and multi-point networks are supported. This is the XBee Pro Series 2 module with PCB antenna from Digi. The new Series 2B improves upon the power output and data protocol of the Pro Series2. Series 2B modules allow you to create complex mesh networks based on the XBee ZB ZigBee mesh firmware. These modules allow a very reliable and simple communication between microcontrollers, computers, systems, really anything with a serial port! Point to point and multi-point networks are supported. Life has its ups and downs, so why not measure them? The MPL3115A2 is a MEMS pressure sensor that provides Altitude data to within 30cm (with oversampling enabled). The sensor outputs are digitized by a high resolution 24-bit ADC and transmitted over I2C. Pressure output can be resolved with output in fractions of a Pascal, and Altitude can be resolved in fractions of a meter. The device also provides 12-bit temperature measurements in degrees Celsius. Arduino source code available here. Are you low on I/O? No problem! The SX1509 can leverage your I2C interface for 16 extra channels of GPIO. And that’s not all! This handy device also contains a fully programmable LED driver and a keypad scanning engine which enables continuous keypad monitoring of up to 64 keys! There’s an Arduino library available here. The ‘must have’ IC for TTL/CMOS projects finally has its own breakout board! This is the RS232 converter IC that is capable of converting your RS232 to TTL connection. Running at 3V and communicating with 5V logic you can use this on both your 3.3 and 5V projects! This is a full 8-pin breakout for the SIM socket allowing direct access to SIM communication. The socket does not have the switch for card detection feature so the SW1 and SW2 pins have nothing to break out and can be considered NC. All the the 6 SIM card pins, are still broken out correctly. This robotic claw is a step up from the classic. The MKII takes everything you loved about the standard robot claw from DAGU and makes some significant improvements! They are made from metal and are pretty heavy-duty, but the MKII also features brass sleeves in the joints which make them more rigid and less likely to come loose. The new spring-loaded clutch helps protect your servo gears from damage and also increases the gearing to 2:1, allowing the servo to act over its entire range and provide more gripping power! Alligator clips (or Crocodile clips, if you prefer) are likely to be the most useful thing on your workbench besides the workbench itself. Whether you’re just trying to make a few quick connections to test your circuit or having trouble making your multimeter leads stay where you need them, these spring-loaded clips are a workshop must-have. There are five different colors, you get two each of: red, green, white, black and yellow, 50cm long. Compatible with the Makey Makey. This through-hole speaker is great for projects where you need something that sounds better than a piezo buzzer but don’t have room for a full-blown speaker. This 30mm diameter speaker is encased in plastic and will handle about 100mW of power. Copper tape has countless applications in electronics from creating low-profile traces for electrical components to RF-shielding and antenna-making. Copper tape is even used to join things together using solder, like the stained glass on Tiffany lamps or to create sensors when combined with the Makey Makey. Have you ever wanted to control the flow of a liquid using your computer or microcontroller, but didn’t know how? Well, here’s how: The 12V solenoid controlled fluid valve. Simply connect a fluid source to the 3/4″ threaded inlet and it will interrupt the flow until 12V is applied to the fast-on connectors on the solenoid. ]]> http://inmotion.pt/blog/?feed=rss2&p=1438 0 http://inmotion.pt/blog/?p=1338 http://inmotion.pt/blog/?p=1338#comments Tue, 11 Sep 2012 00:43:22 +0000 admin http://inmotion.pt/blog/?p=1338

The Arduino WiFi Shield connects your Arduino to the internet wirelessly. Connect it to your wireless network by following a few simple instructions to start controlling your world through the internet. The Arduino WiFi Shield allows an Arduino board to connect to the internet using the 802.11 wireless specification (WiFi).

It is based on the HDG104 Wireless LAN 802.11b/g System in-Package. An Atmega 32UC3 provides a network (IP) stack capable of both TCP and UDP. Use the WiFI library to write sketches which connect to the internet using the shield.

The Pololu Dual MC33926 Motor Driver Shield for Arduino makes it easy to control two brushed DC motors with your Arduino or Arduino-compatible board. Its dual MC33926 motor drivers operate from 5 to 28 V and can deliver a continuous 3 A per motor!!! These great drivers also offer current-sense feedback and accept ultrasonic PWM frequencies for quieter operation.

The Arduino pin mappings can all be customized if the defaults are not convenient, and the motor driver control lines are broken out along the left side of the shield for general-purpose use without an Arduino. There is an Arduino library to make it easy to get started using this board as a motor driver shield. Pololu has a detailed user’s guide that shows how to use this powerful motor shield.

The Pololu 5″ Robot Chassis RRC04A base plate is a round piece of 1/8″ (3 mm) acrylic with a 5″ (127 mm) diameter and cutouts for building a differential-drive robot chassis based on our micro metal gearmotors and 42×19mm wheels. The chassis has assorted general-purpose holes and slots that support many configurations of sensors and other robot components. We also stock the chassis in Transparent / Clear.

Using the Pololu 30T Track Set you can build robots using a tank-like treads. This kit comes with a pair of 30-tooth silicone tracks, two drive sprockets measuring 1.38″ (35 mm) in diameter, and two matching idler sprockets along with mounting hardware. The drive sprockets are designed to work with 3mm D-shafts, such as those on our micro metal gearmotors and 15.5D mm metal gearmotors

The Pololu MinIMU-9 is an inertial measurement unit (IMU) that packs an L3G4200D 3-axis gyro, an LSM303DLM 3-axis accelerometer and 3-axis magnetometer onto a tiny 0.9″ x 0.6″ board. An I2C interface accesses nine independent rotation, acceleration, and magnetic measurements that can be used to calculate the sensor’s absolute orientation.

Pololu have written a basic L3G4200D Arduino library and LSM303 Arduino library that make it easy to interface the MinIMU-9 with an Arduino. The libraries make it simple to configure the sensors and read their raw gyro, accelerometer, and magnetometer data. For a demonstration of what you can do with this data, you can turn an Arduino connected to a MinIMU-9 into an attitude and heading reference system, or AHRS, with this Arduino program. It uses the data from the MinIMU-9 to calculate estimated roll, pitch, and yaw angles, and you can visualize the output of the AHRS with a 3D test program on your PC.

The LSM303DLM combines a digital 3-axis accelerometer and 3-axis magnetometer into a single package that is ideal for making a tilt-compensated compass. The six independent readings, whose sensitivities can be set in the ranges of ±2 to ±8g and ±1.3 to ±8.1gauss, are available through an I2C interface. This LSM303 carrier board operates from 2.6 to 5.5V.

Pololu has written a basic Arduino library for this LSM303 carrier board that makes it easy to interface this sensor with an Arduino. The library makes it simple to read the raw accelerometer and magnetometer data, and it has a function for computing the tilt-compensated heading for those looking to use this sensor as a tilt-compensated compass.

The Parallax ColorPAL combines an RGB LED, a light sensor, and a microcontroller to make a color sensor that can also be used as an ambient light detector and a color generator. Readings are reported via a 1-wire asynchronous serial interface. When sensing color, the ColorPAL uses its LED to illuminate a sample one color component at a time while measuring the light reflected back with a broad-spectrum light-to-voltage converter.

The amount of light reflected from the sample under illumination from each red, green, and blue LED can be used to determine the sample’s color. Arduino example code coming soon.

This board is a simple carrier of Allegro’s ±25A ACS711 Hall effect-based linear current sensor with overcurrent fault output, which offers a low-resistance (approx. 1.2mΩ) current path and electrical isolation up to 100V. This version accepts a bidirectional current input with a magnitude up to 25A and outputs a proportional analog voltage centered at Vcc/2 with a typical error of ±5%. It operates from 3 to 5.5V, so it can interface directly to both 3.3V and 5V systems. We also carry the ACS714 ±30A version.

This adhesive, omni-directional 2.4GHz antenna is perfect for situations when you’re trying to get a signal out from a transmitter that you’ve jammed down into an enclosure. Operating on the 2.4GHz band, it works great for WiFi, Bluetooth or ZigBee. Just connect the antenna using the attached u.fl connector and then peel and stick!

The Android operating system is becoming more and more popular among embedded device manufacturers making it evermore practical to create devices that can interface with Android. Now you can create your own electronic devices with the popular IOIO (”yoyo”) board, and control them with your Android phone or tablet. With this short book on the IOIO, you’ll get started by building four example projects—after that, the possibilities for making your own fun and creative accessories with Android and IOIO are endless.

SPOT is a service that makes adventures off the beaten path a little safer by providing a way to check in, send “I’m ok” messages or call for help via satellite. That’s all very useful if you’re going out into the wild beyond the reach of cellular and WiFi, but what if your Arduino is going and leaving you behind in civilization?

Wouldn’t it be nice if it could take advantage of this technology to send you an e-mail or text message from the middle of nowhere? Now you can with this SPOT Shield!!!

The RN-XV module by Roving Networks is a certified Wi-Fi solution especially designed for customer who want to migrate their existing 802.15.4 architecture to a standard TCP/IP based platform without having to redesign their existing hardware. In other words, if your project is set up for XBee and you want to move it to a standard WiFi network, you can drop this in the same socket without any other new hardware.

This breakout board makes it easy to use the tiny MMA8452Q accelerometer in your project. The MMA8452Q is a smart low-power, three-axis, capacitive micro-machined accelerometer with 12 bits of resolution. This accelerometer is packed with embedded functions with flexible user programmable options, configurable to two interrupt pins. Embedded interrupt functions allow for overall power savings relieving the host processor from continuously polling data.

The MPU-6050 is a serious little piece of motion processing tech! By combining a 3-axis gyroscope and a 3-axis accelerometer on the same silicon die together with an onboard Digital Motion Processor™ (DMP™) capable of processing complex 9-axis MotionFusion algorithms, the MPU-6050 does away with the cross-axis alignment problems that can creep up on discrete parts.

Solenoids are a great way to induce linear motion for pushing, pulling or controlling switches and levers.This smaller solenoid is designed to work directly with 5V which makes it a great match for embedded projects. It has a throw of about 6mm and 2 M2 mounting holes on the body.

This is a conductive knit fabric for use in e-textiles. It is silver-plated nylon that is stretchy in both directions. It is highly conductive with a surface resistivity of < 1 ohm/sq. This is a great add-on to any LilyPad project. Medtex 130 Ag Nylon stretch. It is a bit thinner than our Medtex 180.

This is a conductive knit fabric for use in e-textiles. It is similar in feel to a nylon ripstop material. It is highly conductive with a surface resistivity of < 1 ohm/sq. This is a great add-on to any LilyPad project.

This pack of female headers includes two 6-pin headers and two 8-pin headers. This is similar to the header kit that comes with Arduino shields except that the pins are shorter so they don’t stack. These are useful for Arduino compatible boards that don’t come with headers already installed (like the Arduino Pro).

The WiiChuck Adapter is a small PCB that is designed to be inserted into the connector of a Nintendo Wii Nunchuck to provide access to all 4 wires of the remote. The power, ground and two-wire interface of the Nunchuck are all broken out to a 4-pin 0.1″ pitch header.

This is a simple two wire cable. Great for jumping from board to board. 2-pin JST connector on one end, bare cable on the opposite end.

This is the cable that connects with the EM408 it has two a 5-pin JST connectors with 1mm pitch. Wired pin 1 to pin 1.

The MPR121 IC is a great way to build simple capacitive touch interfaces, and now it’s even easier to incorporate into your Arduino projects with the touch shield. The touch shield has 9 capacitive touch pads, with headers for the remaining 3 electrode connections. With this shield you can have a total of 12 touch sensitive buttons. An on-board logic level converter allows it to work with 5V and 3.3V Arduino boards. Simply solder on some header pins and stack it on to your Arduino for a convenient input device. Check this example code to get started.

The RN-XV module by Roving Networks is a certified Wi-Fi solution especially designed for customer who want to migrate their existing 802.15.4 architecture to a standard TCP/IP based platform without having to redesign their existing hardware. In other words, if your project is set up for XBee and you want to move it to a standard WiFi network, you can drop this in the same socket without any other new hardware.

The RN-XV module is based upon Roving Networks’ robust RN-171 Wi-Fi module and incorporates 802.11 b/g radio, 32 bit processor, TCP/IP stack, real-time clock, crypto accelerator, power management unit and analog sensor interface.The module is pre-loaded with Roving firmware to simplify integration and minimize development time of your application. In the simplest configuration, the hardware only requires four connections (PWR, TX, RX and GND) to create a wireless data connection.

This is similar to other 16×2 character LCDs that you’ve seen before but with one vibrant difference: The backlight is actually an RGB LED. This means that you can change the backlight of this display to any color you want by controlling the three backlight levels. It also utilizes an extremely common parallel interface so code is freely available (check below for an Arduino example). You will need ~11 general I/O pins to interface to this LCD screen, plus an extra 3 pins for the RGB backlight.

The 9DOF Sensor stick is a very small sensor board with 9 degrees of freedom. It includes the ADXL345 accelerometer, the HMC5883L magnetometer, and the ITG-3200 gyro. The ’stick’ has a simple I2C interface and a mounting hole for attaching it to your project. Also, the board is a mere 0.036″ thick (0.093″ overall), allowing it to be easily mounted in just about any application.

Freescale’s MAG3110 is a small, low-power, digital 3-axis magnetometer. The device can be used in conjunction with a 3-axis accelerometer to produce orientation independent accurate compass heading information. It features a standard I2C serial interface output and smart embedded functions. It’s also a tiny QFN package which isn’t very easy to play with so here is our easy to use breakout board. This board breaks out all of the pins for the MAG3110FCR1 to a standard 0.1″ header and also supplies the necessary filtering capacitors so that you can easily use it in your next navigation project.

In physical computing it’s sometimes nice to know how physically close you are to an object. In other words, you may need to know your ‘proximity’ to an object, that’s where the VCNL4000 does it’s magic. Okay, it’s not actually magic, it’s a combination ambient light sensor and IR proximity sensor.

The VCNL4000 can detect it’s proximity to an object using IR within a range of about 20cm. Proximity data as well as ambient light level data can be collected over an I2C interface.

This is the newest revision and fixes issues with the last board. This breakout board pairs an SP3485 RS-485 transceiver with an FT232RL USB UART IC to convert a USB stream to RS-485. The SP3485 is a half-duplex transceiver, so it can only communicate one way at a time, but it can reach transmission speeds of up to 10Mbps.

The RTS pin of the FT232RL is connected to the transmit and receive enable inputs of the SP3485, this line is used to control the transmission mode of the RS-485 transceiver. With the proper drivers installed, the FT232RL will enumerate as a virtual COM port; the drivers are available for Windows, Mac and Linux.

These body electrodes were originally manufactured for use in electric therapy. While we can’t condone the use of these in medical therapy, they can be useful for hobby applications. Each electrode is essentially just a conductive pad coated with adhesive gel and terminated on the opposite side with a snap connector. These electrodes are sold in pairs along with an electrode lead with a snap connector for each at one end and a 2.5mm jack at the other.

The MAX7219CNG is a compact, serial input/output common-cathode led display driver that can interface microprocessors to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs. Included on-chip are a BCD code-B decoder, multiplex scan circuitry, segment and digit drivers, and an 8×8 static RAM that stores each digit. Individual digits may be addressed and updated without rewriting the entire display. Only one external resistor is required to set the segment current for all LEDs.

Faster, cheaper, smaller, better, right? The SN754410 Quad Half H-Bridge is just that. Capable of driving high voltage motors using TTL 5V logic levels, the SN754410 can drive 4.5V up to 36V at 1A continuous output current! Please see datasheet for more information. This is a pin to pin compatible replacement for the L293D.

The TMP36 is a low voltage, precision centigrade temperature sensor. It provides a voltage output that is linearly proportional to the Celsius temperature. It also doesn’t require any external calibration to provide typical accuracies of ±1°C at +25°C and ±2°C over the ?40°C to +125°C temperature range. We like it because it’s so easy to use: Just give the device a ground and 2.7 to 5.5 VDC and read the voltage on the Vout pin. The output voltage can be converted to temperature easily using the scale factor of 10 mV/°C.

This 2×5 crimp connector snaps onto a 10-pin ribbon cable to form a dual-inline connection that can be pushed right into a breadboard.

The TLC5940 is a 16 channel PWM unit with 12 bit duty cycle control (0-4095), 6 bit current limit control (0-63), and a daisy chainable serial interface. This breakout board is a good way to take full advantage of this useful IC. All 16 PWM channels are broken out to standard 0.1″ headers. Also, because the TLC5940 can be daisy-chained, the breakout is designed to support that feature. On the left-hand side of the board all serial inputs are broken out to 0.1″ headers and likewise with output on the right-hand side.

Use this board to increase the number of PWM pins available to your microcontroller for applications such as Monocolor, Multicolor or Full-Color LED Displays, LED Signboards, Display Backlighting, Servo control, or any other project where a large number of PWM drivers are necessary. As usual, there’s also an Arduino Example and Library.

This is a breakout board for Freescale’s MPR121QR2. The MPR121 is a capacitive touch sensor controller driven by an I2C interface. The chip can control up to twelve individual electrodes, as well as a simulated thirteenth electrode. The MPR121 also features eight LED driving pins. When these pins are not configured as electrodes, they may be used to drive LEDs.

Using the MPR121 you can create touch sensitive surfaces with any size and shape. Check out the Arduino Example Code and this awesome Bildr Tutorial to learn more.

This is a breakout board for Freescale’s MMA7361L three-axis analog accelerometer. The sensor requires a very low amount of power and has a g-select input which switches the accelerometer between ±1.5g and ±6g measurement ranges. Other features include a sleep mode, signal conditioning, a 1-pole low pass filter, temperature compensation, self test, and 0g-detect which detects linear freefall. Zero-g offset and sensitivity are factory set and require no external devices.

This is a breakout board for Honeywell’s HMC5883L, a 3-axis digital compass. Communication with the HMC5883L is simple and all done through an I2C interface. There is no on-board regulator, so a regulated voltage of 2.16-3.6VDC should be supplied.

This sensor is very easy to interface with an Arduino, check out these examples of use and source code.

• Example code (Arduino)
• HMC5883L Compass Tutorial with Arduino Library
• Digital Compass How-To Video

This is a 4-wire analog touch screen originally designed for the Nintendo DS. Add this touch screen to any LCD you want! Readings are taken by putting 5V across two of the pins and doing an analog to digital conversion on the other two pins. Full X and Y position can be achieved with only 4 GPIOs. Follow this Sparkfun tutorial to see how easy is to use this with the Arduino.

We also carry the breakout board for the SMD connector for the above Nintendo DS touch screen.  4-pin right angle ZIF connector at 0.5 mm pitch broken out to 4 0.1 inch spaced headers.

This is a breakout board for the SP3485 RS-485 transceiver IC, which will convert a UART serial stream to RS-485. The SP3485 is a half-duplex transceiver, so it can only communicate one way at a time, but it can reach transmission speeds of up to 10Mbps. This board requires a very low amount of power and can operate from a single +3.3VDC supply.

This is a breakout board for Honeywell’s HMC5843, a 3-axis digital compass. Communication with the HMC5843 is simple and all done through an I2C interface. There is no on-board regulator, so a regulated voltage of 2.5-3.3VDC should be supplied. Check out this Arduino library and this tutorial on verifying the accuracy of its results.

The USB Host Shield contains all of the digital logic and analog circuitry necessary to implement a full-speed USB peripheral/host controller with your Arduino. This means you could use your Arduino to interface with and control any USB slave device – thumbdrives, digital cameras, bluetooth dongles, and much more! And it is also compatible withany Android device.

Check out this tutorial on Android ADK with a standard Arduino Uno and USB Host Shield. Using the MicroBridge library for the Arduino you can start to control and transfer information easily from / to an Arduino.

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