arduino

Posted on by Jean-Luc Aufranc (CNXSoft) - 13 Comments on How to Buy an Arduino Leonardo (Clone) Kit for Less than $20

How to Buy an Arduino Leonardo (Clone) Kit for Less than $20

Borderless Electronics Indiegogo campaign for their $9 electronics kit with an Arduino Leonardo clone went so well that the owner of the campaign decided to limit the total number of boards to 15,000, and basically stop the campaign early to avoid production delays. For $12 ($9 + shipping), you could get a full kit with: Arduino Leonardo clone A mini breadboard with 10 Jumper wires A plug for a 9V battery A few components: 6 LEDs, 10x 330 Ohm resistors, 10x 1 KOhm resistors, 3x push buttons, 2 NPN transistors, 5 diodes, a light sensor, and a sound buzzer A micro USB to USB cable Although they may start a new one campaign in a few months, the campaign is over, and you can’t get this cheap Arduino kit anymore. But one of my reader (onebir) let me know that for less than $20, you can  get an Arduino Leonardo […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 3 Comments on Fritzing Open Source Software Designs PCB Layouts from Breadboard Drawings

Fritzing Open Source Software Designs PCB Layouts from Breadboard Drawings

Earlier this year, I’ve tried Gumstix Geppetto, a web-based application that let you easily design and order boards. You can just add some building blocks in Chrome browser, connect them, and you’re ready to order a PCB. However, the setup fee of $1999 reserves it to businesses. Don’t worry If you’re just a hobbyist as Fritzing, an open source software supporting Windows, MacOS and Linux, allows you to draw breadboard connections, and automatically route the schematics, and the PCB layout. You can then export the gerber files, or order directly from Fritzing Lab. The software is not exactly new, but it’s the first time I’ve come across it. I’m using Ubuntu 12.04 64-bit, so let’s download, install and run the corresponding version:

I’ve decided to connect an LED on the breadboard, and control it with an Arduino Leonardo board to try the software. Alternatively, you could also play around […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 29 Comments on Borderless Electronics Sells $9 Arduino Compatible Starter Kit

Borderless Electronics Sells $9 Arduino Compatible Starter Kit

The Raspberry Pi fundation, a nonprofit organization, has brought a low cost ARM Linux platform to the masses, and Arduino already did that with electronics, but Harold Timmis, an engineer, found out it was still not cheap enough as he worked as a volunteer teaching electronics at his library. So he (and others) decided to clone Arduino Leonardo, setup a website called Borderless Electronics, and sell it without profit via Indiegogo for just $9 ($12 including shipping). The board is indeed the same as Arduino Leonardo with different color, logo, and name: Microcontroller – Atmel ATmega32u4 @ 16 MHz SRAM – 2.5 KB onchip (ATmega32u4) Flash Memory – 32 KB onchip (ATmega32u4) of which 4 KB used by bootloader EEPROM – 1 KB onchip (ATmega32u4) Operating Voltage – 5V Input Voltage – (recommended) 7-12V | (limits) 6-20V Digital I/O – 20 pins PWM – 7 channels Analog Input – 12 […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 2 Comments on WigWag Simplifies Home Automation, Provides Raspberry Pi and Arduino Shields

WigWag Simplifies Home Automation, Provides Raspberry Pi and Arduino Shields

WigWag is an home automation kit aiming at simplifying home automation, yet allowing developers to roll their own system via Arduino and Raspberry Pi Shields. Wigwag is currently composed of three devices: WigWag Sensor Block – Universal sensor device with 8 environmental sensors (light, detect motion, sound, temperature, humidity, movement…), 4 control features (relay, IR blaster…), and 2 expansion ports. It can be powered by 4x AA batteries (possibly for up to 1 year), or a USB power adapter. This device runs Contiki OS on Freescale MC1322 MCU (with built-in 6LoWPAN radio). WigWag Relay – Connects WigWag and third party devices to their cloud service, allowing interaction with Internet services, such as email, Dropbox and Twitter. It acts a bit like a central server managing all your WigWag Sensor Blocks or other connected devices such as Phillips Hue light bulbs or Belkin WeMo outlets in your house. IP networks (Wi-Fi & Ethernet) […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 8 Comments on Open Source Prosthetic Arm Controlled By Muscle Movements

Open Source Prosthetic Arm Controlled By Muscle Movements

Gustavo Brancante is working on a very interesting project that let you control a prosthetic arm with your muscle movement using open source technology with InMoov Hand (which can be 3D printed), Arduino Uno R3, and Olimex Electrocardiography electromiography shield (SHIELD-EKG-EMG). This is called a Myo-Electric Prosthesis. Gabriel wrote a tutorial to use his “open arm” which I’ll summarize here. On the hardware front, you’ll also need a UDP compatible Wifi Shield configured as a UDP server with a fixed IP in the same LAN as the smartphone, and 57600 bps. TouchOSC (for smartphone and Workstation) is used with the following layout for calibration and feature selection. Finally load the program below to your Arduino board: Once everything is connected together, you should be able to do that: The demo looks impressive, but this is still work in progress, and next step will be to use a four channel EMG instead […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 5 Comments on $34 BLEduino Bluetooth 4.0 Low Energy Arduino-Compatible Board

$34 BLEduino Bluetooth 4.0 Low Energy Arduino-Compatible Board

After RFDuino, here’s another tiny low cost Bluetooth 4.0 SMART development board compatible with Arduino. BLEduino board is the merger of Arduino Leonardo and Bluetooth module, features Atmel ATmega32u4 MCU, Nordic Semi nRF8001 for BLE, and includes an on-board USB programming interface. Key features of BLEduino board: MCU – Atmel ATmega32u4 @ 16 MHz with 32 KB flash, 2.5 KB SRAM, and 1 KB EEPROM Power Supply – 5V.  Onboard 5V & 3.3V regulators I/O: 21x GPIO Pins 6x PWM Channels 12x Analog Input Channels Serial Communication – UART, SPI, I2C LED – RX/TX for serial communication, LED for Bluetooth connectivity Bluetooth – Version 4.0 with Low Energy sypport via Nordic Semi nRF8001. Expected range: at least 24 meters Dimensions – Around 22.8 x 43.2 mm Kytelab, the company behind BLEduino, also provides “Shield-Shield”, a baseboard that translates BLEduino’s pin layout into the traditional Arduino layout, and allows you to […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 3 Comments on $25 Babuino Stick & Board Let You Control Your Devices with Your Smartphone and Vice Versa

$25 Babuino Stick & Board Let You Control Your Devices with Your Smartphone and Vice Versa

Babuino Stick and Babuino Board are tiny low cost Arduino-compatible USB dongle and board featuring Atmel AVR MCU, and Bluetooth 2.0 + EDR connectivity. Both have basically the same hardware, but Babuino Stick is more suited to control a computer or Smart TV via your smartphone, and Babuino Board can be used for robotics and automation projects. The device can also be used to control your smartphone (e.g. to write SMS) from your PC or Mac. Here are the specifications of these “Babuini”: MCU – Atmel ATXMega128A1 @ 32 MHz with 128KB flash program memory, 8KB boot code section, and 8KB SRAM. Master/Slave selectable Bluetooth 2.0 + EDR module Infrared transmitter and receiver USB – micro USB (board) and USB port (stick) User and reset push-buttons Headers (Board only) – ICSP pins, ADC & DAC, PWM, I2C & SMBus, SPI and UART LEDs – Bluetooth and User LED for both, […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 16 Comments on $59 Digitstump DigiX is an Arduino Due Compatible Board with Wi-Fi and Mesh Networking

$59 Digitstump DigiX is an Arduino Due Compatible Board with Wi-Fi and Mesh Networking

The DigiX, by Digistump, is hobbyist board with an Atmel SAM3 Cortex M3 MCU @ 84 MHz, embedded low power Wi-Fi (b/g/n) and mesh networking,audio output, USB on the go support, and the company claims it is 100% compatible with anything that works with the Arduino Due, with some extra I/Os for a total of 99 I/O pins. The hardware specifications go as follows: MCU – Atmel AT91SAM3X8E 32-bit ARM Cortex M3 Processor @ 84 Mhz with 96KB SRAM, 512KB Flash Connectivity On-board 802.11b/g/n WiFi Module (FCC/CE Approved) On-board nRF24L01+ wireless module (removable) – 2.4Ghz band 99 I/O Pins including 12 PWM, 12 Analog Input, 2 Analog Output (DAC), CAN bus, 4x UARTs, 2x I2C, SPI, JTAG, DMA and more. Audio – 3.5mm stereo jack USB – micro USB OTG port Misc – On-board RTC, user LED Power Supply – 3.3V, 3.4-5.5V (LiPo Ready), 5V, or 6-16V input (on-board buck regulator) (Max?) Power […]

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