The Mini Infra-Red Remote Robot Controller shield for Arduino Nano is designed to drive mini mobile robots. Low voltage DC Motor controller interface allows Infrared wireless control of two DC motors, two PWM and 2 Direction signal outputs to drive two motors separately. TB6612 IC is the heart of the project. IC can handle constant current up to 1.2A, Supply 6-12V DC. One LDR connected to Analog pin A7 for application like light sensitive robot controller. Infrared receiver TSOP1738 used as IR receiver which is connected to Digital pin D2 of Arduino Nano. Nano D7-Direction Motor A, D4 Direction Motor B, D5 Motor A PWM signal, D6 Motor B PWM signal.
Mini Infra-Red Remote Robot Controller Shield For Arduino Nano – [Link]
This board created for makers, who wants to use various Arduino UNO shields using PIC microcontrollers from Microchip. Board facilitates the use of any 28 PIN SMD SO PIC microcontrollers without crystal (internal oscillator). Project also can be used to develop RS485 application with the help of on board SN75176 IC. Two regulators provide 3.3V and 5V DC outputs. ICSP connector provided to program the PIC IC using PICKIT2/PICKIT3 programmer. On board DC jack connector and additional CN2 Header connector helps to power up the board. Input supply 7V-15V DC. This board has been tested using PIC16F886 IC. Switch SW1 helps to reset the board. Please refer to PCB top layout for Arduino Vs. Microchip Pin configuration.
Measuring distance is so important in today’s world that things like driverless cars will be impossible without it, that description is probably enough to describe how important knowing the distance between two objects can be. For that reason, today we will be building a distance meter using the Arduino and the HC-SR04 ultrasonic sensor.
The HC-SR04 ultrasonic sensor is a cheap ranging sensor capable of measuring a distance between 20 – 400cm without contact and at an accuracy of up to 3mm. The sensor is made up of a transmitter and receiver with operating frequency of around 40khz. It uses the echo principle for distance measurement by emitting an ultrasonic wave of 40khz. If there is an object in its path, the emitted wave is reflected and the reflected signal is received via the receiver. The time elapsed between the transmission of the signal and the reception of the echo is then used to determine the distance between the sensor and an object in its path.
Arduino distance meter with Ultrasonic Sensor (HC SR04) and Nokia 5110 LCD display – [Link]
The Adafruit Metro 328 development board is an alternative to the Arduino Uno with an equivalent and compatible board design. It’s designed and manufactured by Adafruit. The Metro 328 just like other Arduino Uno clones is also based on the famous Atmega 328P that has been used in various development boards and projects.
The Metro 328 offers an ATmega328 microcontroller with Optiboot (UNO) Bootloader and a ton of other features you won’t find on the Arduino Uno board. The Metro board is equipped with 19 GPIO pins unlike the Arduino Uno 14, analog inputs, UART, SPI, I2C, timers, and PWM. Six of its GPIO pins are for Analog input with two reserved for the USB to Serial Converter. Just like the standard Arduino Uno, it also includes 6 PWM pins on 2x 8bit timers and 1x 16bit timers.
Another significant distinction between the Metro and the Arduino Uno is the USB to Serial converter. The Arduino Uno is based on the Atmega USB-UART bridge (ATMEGA16U2), but the Metro 328 is based on the FTDI FT231X that provides excellent driver support in all operating systems with a more reliable data transfer unlike the former. It comes with four indicator LEDs, on the front edge of the PCB, for easy debugging. One green power LED, two RX/TX LEDs for the UART, and a red LED connected to pin PB5.
The Metro board has an on and off switch for the DC jack so you can turn off your setup easily. It also uses the conventional micro USB connector found around. Even though the Logic level of the Metro is 5V, it can be converted to 3.3v logic by cutting and soldering a closed jumper.
The following are the Metro 328P specifications:
ATmega328 microcontroller with Optiboot (UNO) Bootloader
USB Programming and debugging via the well-supported genuine FTDI FT231X
Input voltage: 7-9V (a 9VDC power supply is recommended)
5V regulator can supply peak ~800mA as long as the die temp of the regulator does not exceed 150*C
3.3V regulator can supply peak ~150mA as long as the die temp of the regulator does not exceed 150*C
5V logic with 3.3V compatible inputs can be converted to 3.3V logic operation
20 Digital I/O Pins: 6 are also PWM outputs, and 6 are also Analog Inputs
6-pin ICSP Header for reprogramming
32KB Flash Memory – 0.5K for bootloader, 31.5KB available after bootloading
Over the years we have seen a significant interest in people wanting to learn electronics and programming but are mostly handicapped with what they could build. Over time, learning has been proven to be more reliable when learning is more practical, and we can quickly grasp the concept if one is seeing what he or she is building in real-time and promptly learn why it works the way it works.
Lego Education robotics which has been around for a while, has allowed students to become active leaders in their education as they build everything from animals for a robotic zoo to robots that play children’s games. Lego has been tremendous, and it has quite helped students grasped the concept of engineering and programming, but one of the significant drawbacks with Lego is; it has not been fully developed for the makers open source movement and also comes with a high-cost price, unlike some Arduino based development environments.
The Arduino has caused a revolution in bringing artists into the world of robotics. It has spawned numerous offshoots from very small to wearable processors. Building something with Arduino requires some necessary electronic circuity skills and basic programming which sometimes could be intimidating for the complete novice. Robby from Mr. Robotics is a new education robot for anyone interested in learning more about robotics while also learning about robotics and programming. Robby is based on the Arduino ecosystem.
The team from Mr. Robotics based in Lille, France are crowdfunding their new educational robot called Robby, a tool to learn electronics and programming while having fun. The team at Mr. Robotics believe in this technologically advancing world, everyone should have the opportunity to be imaginative and use it for creation and development. That will need to provide the enabling environment for grooming interest in programming while cultivating natural curiosity, Robby could be the tool to bridge those gaps.
“The creativity is the intelligence having fun.”
ROBBY robot is entirely hackable and adaptable with Plug & Play modules for any design scenario. So, today you can design to plug in a particular sensor and decide tomorrow you want another sensor in that position. Just unplug and plug back. The robot kit is fully programmable and allows you to add your own modules and sensors as well as choose your own architecture providing an open source scalable system complete with plug and play sensors. The robot kit is ideal for educational applications as well as keen hobbyists and makers.
At the heart of Robby is the ARM Cortex-M4F 32-bit microcontroller running up to 120 Mhz, and comes with three 12V DC precise motors and incremental encoders for direction, position and speed measurement. It includes a 12V extra Lipo 3S battery, Wi-Fi, USB and Bluetooth, buzzer and an open chassis for adding modules, sensors, components, and breadboard. Robby can be programmed with Blocky (graphical drag and drop block like programming) and with the Arduino IDE.
With the arrival of the IoT and the need for control, devices now need to do more than perform the basic functions for which they are built, they need to be capable of communicating with other devices like a mobile phone among others. There are different communication systems which can be adapted for communication between devices, they include systems like WiFi, RF, Bluetooth among several others. Our focus will be on communication over Bluetooth.
Today we will be building an Arduino based project which communicates with an app running on a smartphone (Android) via Bluetooth.
Arduino Communication with an Android App via Bluetooth – [Link]
Particle, which has been known for its collection of IoT focused development boards, and its Internet of Things (IoT) platform (Particle Cloud) has launched a new set of mesh network-enabled IoT development kits called Particle Mesh. Particle Mesh is expected to provide developers more insight into implementing mesh networking technology. They help to collect sensor data, exchange local messages, and share their connection to the cloud.
Particle Mesh features a new family of mesh-ready devices with Wi-Fi, BLE and LTE connectivity and also integrated with the Particle device cloud. Particle mesh consists of three main boards: The Argon, The Boron, and the Xenon. Each of these Particle Mesh boards has at least one form of outside connectivity option (LTE/3G/2G, Wi-Fi or Bluetooth) and an onboard mesh network hardware to facilitate setting up a mesh network for local communications between sensors and other particle mesh boards. All three devices are built around the Nordic nRF52840 MCU + BLE + mesh radio and follow the Adafruit Feather specification making it compatible with most Adafruit FeatherWing hardware accessories. (more…)
This is my second project for LED Driver based on CAT4101 IC. The first project was for single White LED. This project has been designed to drive 3 channels of RGB LEDs with PWM signal which helps to create multi-color LED light. Arduino Nano is used to generate PWM signals for RGB LEDs and board has 3 tactile switches and Analog signal input to develop various RGB LED related applications. Each channel can drive load up to 1A and input supply up to 12V DC. 1A X 3 Constant current LED driver shield for Arduino Nano has been designed for verity of LED related applications. The shield provides accurate LED current sink to regulate LED current in a string of LEDs. The LED current is mirrored and the current flowing from the RSET is set by PR1. On board 2W X 3 LED are used for testing purposes.
IoT which translates to the Internet of Things has been a significant buzz for the last five years while disrupting major Industries (from Agriculture, Energy, Healthy, Sports and several others).
IoT adoption has seen rapid development in the makers’ world, with different makers and manufacturers producing various forms of boards, chips, software to facilitate quick IoT development. Boards like ESP8266 from Espressif System is used for rapid prototyping and a low-cost choice for Wi-Fi-based IoT applications. Israeli based IoT firm SensiEdge has launched the SensiBLEDuino, an off-the-shelf, hardware-ready development kit based on the open-source Arduino for rapid prototyping of IoT applications.
SensiBLE is a full fledge customizable solution for those wanting to design IoT products. It helps to fasten development with a variety of sensors onboard, along with Bluetooth LE 4.1 capabilities and a low-power ARM® 32-bit Cortex®-M4 CPU with FPU. Some of the main challenges when embarking on IoT product development are; what platform will I use? What sensors are available to achieve my goal(s)? How do I handle connectivity? What about the Cloud Platform to use, and so on. Developers or product designer always result in the use of several boards or modules to achieve this while also increasing the time to bring the product to life. The SensiBLE kit removes most of these fears; it combines hardware and software in tiny form factor to allow developers get their product to market quickly at lower development costs. (more…)
A data logger is an electronic device or instrument that records data over a period of time. It allows the user to record time or location stamped data which can be viewed at a later time or real time.
Irrespective of the type of data being logged or the kind of data logger, these devices usually contain two main units, the sensor unit and the storage/communication unit. The sensor unit may involve the use of an external instrument or a sensor embedded within the device. Increasingly, but not entirely, data logging devices are becoming more based on micro processors and microcontrollers, which has opened up a whole new level of data gathering and storage.