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13 Jun 2015

remote_tester_test

Who never had the need to test a TV or DVD remote?

I have several times. My favorite technique was to take my mobile phone and with the camera pointed at the infrared emitter look for a flashing little purple light. The mobile phone technique is an way for testing the remote but still i decided to make a small circuit just to test the remotes.

IR remote tester – [Link]

7 Jun 2015

1

by Mingyuan Huang & Jie Zhang:

Our ECE 4760 final project is to build a microcontroller based smart medicine box. Our medicine box is targeted on users who regularly take drugs or vitamin supplements, or nurses who take care of the older or patients. Our medicine box is programmable that allows nurses or users to specify the pill quantity and day to take pills, and the serve times for each day. Our smart medicine box contains seven separate sub-boxes. Therefore, nurses or users can set information for seven different pills. When the pill quantity and time have been set, the medicine box will remind users or patients to take pills using sound and light. The specific number of pills needs to be taken will be displayed by a seven segment led display placed on the corresponding sub-box. Compared with the traditional pill box that requires users or nurses to load the box every day or every week. Our smart medicine box would significantly release nurses or users’ burden on frequently preloading pills for patients or users.

Smart Medicine Box – [Link]

29 May 2015

IMG_20150422_204117-600x450

Mohamed Afzal has written an article detailing how to send data to Thingspeak.com with ESP8266 + DS18B20 temperature sensor:

The stock Firmware in the ESP8266 supports AT commands and for communicating with this need an micro-controller like Arduino. But i want to make a simple solution for that without using external micro-controller. NodeMCU firmware was the best thing i found. To upload the NodeMCU firmware please do a google search, there are tons of video’s and supporting documents out there. I am not going to explain the flashing in this post.
NodeMCU is Lua based firmware and i hope most of the people will know it. Most router GUI also built by Lua.
If you are done with the flashing the ESP8266 module, lets connect the DS18B20 to GPIO 0. If you are not aware of pin mapping please check it before connecting anything to the module.

ESP8266 + DS18B20 Temperature sensor sends data to Thingspeak.com – [Link]

26 May 2015

trinket_Complete_Clock

by MIKE BARELA @ adafruit.com:

Trinket lends itself very well to building clock projects, its small and easy to hide behind a larger display. And clocks don’t need a lot of logic, this example only has maybe 20 lines of code. Adding a digital display via I2C is possible using seven segment or character-based displays (with the library code posted for other projects).

This project interfaces Trinket to the the Adafruit DS1307 real-time clock (RTC) breakout board to form a clock. But in a twist, the display is done using two analog meters. One for hours, one for minutes.

The Trinket can output to a meter without digital to analog converters. Trinket has pulse width modulation (PWM) on three of its pins. The meter uses a moving coil inductance movement, acting to average the indication of current flowing through it. If you have narrow pulses, the average voltage it sees is lower, thus the current is lower for the fixed resistance attached to it. For wide pulses, the meter sees nearly the supply voltage and will stay around the full scale. This circuit varies the pulse width sent to the meters proportional to the hour of the day and the minutes after the hour.

Meter Clock using a DS1307 RTC and Trinket Microcontroller – [Link]


25 May 2015

FXFROUOIA3YJYFN.LARGE

by diy_bloke @ instructables.com:

In a recent instructable Indigod0g described a mini weather station that works pretty well, using two Arduinos. Maybe not everyone wants to sacrifice 2 Arduinos to get humidity and temperature readings and I commented that it should be possible to do a similar function with two Attiny85’s. I guess talk is easy, so I better put my money where my mouth is.

Mini weather station with Attiny85 – [Link]

25 May 2015

20150518005630_Artik-2

by elektormagazine.com:

At the ‘Internet of Things World’ event held in San Francisco, Samsung Electronics announced three boards making up their new ARTIK development platform targeted at the Internet of Things (IoT) applications. To make the platform more attractive for developers it is compatible with the existing Arduino software development system. Young Sohn, President and Chief Strategy Officer of Samsung Electronics and Massimo Banzi, Co-founder of Arduino shared the stage to make the announcement.

The ARTIK 1 at 12mm square is the smallest board and includes a Dual Core processor running at 250 MHz and 80 MHz with 1 MB on-chip and 4 MB SPI Flash memory together with Bluetooth Low Energy (BLE) with Chip Antenna, secure element to give HW security and a 9-axis motion sensor. A single charge will allow the board to operate for three weeks while always-on and paired with a smartphone.

Samsung gets serious about the IoT – [Link]

24 May 2015

esp-03_board

by Nathan Chantrell:

This is a small dev board I designed to make experimenting with and deploying the ESP8266 ESP-03 modules a bit easier. As well as breaking out all the pins to 2.54mm headers it has a position to fit either a DS18B20 temperature sensor or a DHT22 temperature/humidity sensor plus the required pull up resistor. It can be powered from 3.3V or 5V+* if the regulator is fitted and there is a footprint for a micro USB connector if required.

ESP8266 ESP-03 Dev Board – [Link]

21 May 2015

F4N3ZR7I9UE0Q7W.MEDIUM

by TrackerJ @ instructables.com:

One of the main problem in battery powered projects is to choose/use the proper battery size/model/type. As market is flooded now with a lot of low quality batteries claiming thousands of mAh ( Ultrafire fakes stories is just an example) the only way to proper check them is to run a set of tests.

A simple basic tester that will be able to monitor over the entire battery lifetime at least few parameters like, voltage, current, power consumption and stored energy between charges can give you valuable informations about the parameters and health of the battery. And of course also you can see how are looking the numbers against the datasheet claims :).

ESP8266 WIFI Battery Monitor System – [Link]

21 May 2015

FM430_-_A_MSP430_and_TEA5767_project

Rohit Gupta shows off his digital FM Receiver on MSP430 using TEA5767:

I completed one yesterday using the MSP430 and TEA5767 Chip. Gave it a minimalist switch to toggle the channels stored in an array. Gives realtime channel strength and transmission quality values too over serial.

FM430 – A MSP430 and TEA5767 project that lets you listen to clear digital FM – [Link]

20 May 2015

photo

This project is a versatile, configurable, and cost effective development board available for the 16F628A or other 18 PIN Microcontroller from Microchip. The board has simplest form with all the Port pins terminating in a Relimate connector (Header Connector) for easy connection to the outside world.

16F628A Microcontroller development board – [Link]



 
 
 

 

 

 

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