The 4 channel wireless relay module is a smart module with 4 mechanical relays providing an easy way to control large AC and DC loads and device. With the 315MHz RF receiver integrated in, it can be directly remote controlled by the matching remote-control, which make it easy to use in home automation and industry control. The remote-control has its own battery, the relay receiver board must be provided with 12V DC supply to get it work. Rated load of the each relay on the receiver board is 10A/120VAC 20A/14VDC.
It also provides t......
Temperature and humidity measurement are always a nice addition to hobbyist projects. In my previous post, I’ve discussed the DHT11 sensor, which is capable of measuring both temperature and humidity. They are digital sensor and provide calibrated outputs with temperature and relative humidity. I’ve also demonstrated how to interface with Arduino and display it on 1602 LCD. Unlike DHT series, HSM -20G is analog sensor that converts the two ambient parameters to voltage outputs. There is a hobbyist who has shared their method of int......
Programming with C is not always the easy job for all those non-programmer Arduino enthusiasts but now for their ease the ‘ArduBlock’ a graphical, block-based programming language is available.
We have already seen a number of graphical, block-based programming languages in our time such as Scratch, OpenBlocks but what keep’s it apart from other’s is that it uses the Arduino IDE alone for its functionality and gets well integrated to it, so everything possible in C with an Arduino should be possible with ArduBlock.
Example of ArduBlock Program:
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The Arduino Ethernet shield allows you to easily connect your Arduino to Internet using Ethernet library with mere minutes. Seting it up as simple as plugging this module onto the Arduino, connect it to your network with RJ45 cables. The shield enables your Arduino send and receive data from anywhere with internet connection.
The Ethernet shield is based on the Wiznet W5100 Ethernet shield operating at 5V with internal 16K buffer. It has a connection speed up to 10/100Mb.
There is also on-board micro SD card slot which enables you to store files for se......
HY-TFT320 is a 3.2 inch TFT LCD Screen module, 320*240 (resolution), 65K color, 40pins interface , not just a LCD breakout, but include the Touch screen, SD card. So it’s a powerful extension module for your project.
This Screen includes a controller SSD1289, it’s 16bit data interface, easy to drive by many MCU like STM32 ,AVR and 8051.HY-TFT320 is designed with a touch controller in it . The touch IC is XPT2046 , and touch interface is included in the 40 pins breakout. Another useful extension in this module is the SD Card socket . It use the SPI mode to operate the SD card, the SPI in......
Arduino has been extensively used for home automation, it is more flexible and cheaper than commercial solution. With varieties of projects out there, Arduino has bring custom home automation to everyday life. Ranging from a phone application that alert you to pakage your diliveries to a solar powered wireless radiation monitor by Geiger counter measuring the background radiation outside the house and transmit it to a display monitor inside the house. Similar application is much more.
This time I would built up a wireless temperature and humidity sensor with RF modules. Transmitter stati......
What if you could add gesture recognition to your computer without making any hardware changes? This research project seeks to use computer microphone and speakers to recognize hand gestures. Audio is played over the speakers, with the input from the microphone processed to detect Doppler shift. In this way it can detect your hand movements (or movement of any object that reflects sound).
The sound output is in a range of 22-80 kHz which is not audible to our ears. It does make us wonder if widespread use of this will drive the pet population crazy, or......
There are many different forms of digital communication protocols and they differ based on application. I2C and SPI protocol are commonly recognized as ‘small protocol’ relative to such Ethernet, USB, SATA, PCI-E protocol bus and etc that their transmission rate is up to hundreds or thousands Mbits/s. However, we couldn’t forget the purpose of these kinds of protocols bus. ‘Big protocol’ is employed as communication between systems, ‘small protocols’ is used as communication between IC within systems. There is no evidence that ‘small protocols’ is replaced necessarily by these ‘big proto......
This time I will made a simple timer which can count up and count down from 0 to 99 using 7 segment LED and 74hc595 shift and register breakout board. Using more 7 segment LED and 74hc595 module can accomplish multi-digit timer counting up and counting down if you wish.
A 7-segment display consists of eight LEDs arrange to form the digit eight, with a decimal point. Individually on or off, they can be combined to produce simplified representations of the Arabic numerals. Often the seven segments are arranged in an oblique (slanted) arrangement, whic......
Are you curious about who are serving you everyday here in GETECH?
When you sign and receipt your goods, some of you might want to know, who packed and post your parcels from GETECH.
When you got a problem and drop us a mail, you might always got a reply with the follow words:
Hi friends,
Thanks for your order and mail………..
Do you want to know who write you back?
And you might also want to know who in GETECH controlling the products quality to ensure your items bought in GETECH can run smoothly.
Ok, here we go! Read this post—Team Show, and you will know all ......
