September 2016

Getting started with ESP8266 | AT Commands

September 26, 2016October 19, 2017 Bikash Narayan Panda

Connecting the ESP8266 Wi-Fi module to PC and trying out some AT Commands.The ESP8266 is a low-cost Wi-Fi chip with full TCP/IP stack and microcontroller capability produced by Shanghai-based Chinese manufacturer, Espressif Systems. The chip first came to the attention of western makers in August 2014 with the ESP-01 module, made by a third-party manufacturer, AI-Thinker. This small module allows microcontrollers to connect to a Wi-Fi network and make simple TCP/IP connections using Hayes-style commands. However, at the time there was almost no English-language documentation on the chip and the…

Getting Started with Smallest Arduino | Digispark AtTiny85

September 22, 2016October 19, 2017 Bikash Narayan Panda

The Digispark is an Attiny85 based microcontroller development board similar to the Arduino line, only cheaper, smaller, and a bit less powerful. With a whole host of shields to extend its functionality and the ability to use the familiar Arduino IDE the Digispark is a great way to jump into electronics, or perfect for when an Arduino is too big or too much. Specs: Support for the Arduino IDE 1.0+ (OSX/Win/Linux) Power via USB or External Source – 5v or 7-35v (12v or less recommended, automatic selection) On-board 500ma 5V…

MCP3208 I2C ADC Interfacing with Arduino

September 21, 2016July 1, 2017 Bikash Narayan Panda

The MCP3208 12-bit Analog-to-Digital Converter (ADC) combines high performance and low power consumption in a small package, making it ideal for embedded control applications. IC features a successive approximation register (SAR) architecture and an industry-standard SPI™ serial interface, allowing 12-bit ADC capability to be added to any PICmicro® microcontroller. IC Features 100k samples/second, 8 input channels, low power consumption (5nA typical standby, 400 µA max.active), and is available in 16-pin PDIP and SOIC packages. Applications for the IC include data acquisition, instrumentation and measurement, multi-channel data loggers, industrial PCs, motor control, robotics,…

Raspberry Pi 3 as BLE Beacon

September 21, 2016September 29, 2016 Bikash Narayan Panda

Bluetooth beacons are hardware transmitters – a class of Bluetooth low energy (LE) devices that broadcast their identifier to nearby portable electronic devices. The technology enables smartphones, tablets and other devices to perform actions when in close proximity to a beacon. The first commercial implementation of bluetooth beacons was by an Australian company called DKTOB (trading as Daelibs), who leveraged Bluetooth for indoor proximity sensing in its Seeknfind location attendance solution. Daelibs designed and manufactured a bluetooth beacon for use in shopping centres based…

MCP3208 SPI ADC Interfacing with Raspberry Pi

September 21, 2016November 14, 2017 Bikash Narayan Panda

DHT11 | Interface using JAVA | Raspberry Pi

September 1, 2016December 15, 2016 Bikash Narayan Panda

The DHT11 is a basic, ultra low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). Its fairly simple to use, but requires careful timing to grab data. The only real downside of this sensor is you can only get new data from it once every 2 seconds, so when using our library, sensor readings can be up to 2 seconds old. Source : Adafruit…