A home to software testing, electronics circuits & projects, tips and tricks and digital diary.
A home to software testing, electronics circuits & projects, tips and tricks and digital diary.
What is MQ-2 smoke detector? The MQ-2 smoke sensor is sensitive to smoke other inflammable gases like LPG, Butane, Propane, Methane, Alcohol, Hydrogen The resistance of the sensor is different depending on the type of the gas. The smoke sensor…
Introduction This weather station using NodeMCU uses open weather api from openweathermap.org. Parts required for this project NodeMCU OLED I2C display Some wires and USB data cable 5v v battery or power supply What is NodeMCU? Its a Development Kit…
What all are required? You would need following parts build the above circuit. C1 – 10 u C2 – 1u C3 – 100n C4,C7- 10n C5 – 1n C6- 100n VR1 – 100k R2 – 10k R3- 3.3k R4 –…
Introduction In this arduino clock project we are displaying time on 7 segment tube display. Unlike other posts where I had used lcd display. Tube display board uses TM1637 chip. Parts required For this project we need 3 important parts…
Introduction to OV7670 camera module The OV7670 image sensor is a small size, low voltage, single-chip VGA camera and CMOS image processor for all functions. It provides full-frame, sub-sampled or windowed 8-bit images in various formats, controlled through the Serial…
In this post we will connect the LCD to GPIO (General Purpose Input Output) pins of PI to display characters on it. We will write a program in PYTHON to send the appropriate commands to the LCD through GPIO and…
Introduction In this post I will help you in installing and configuring the LCD touch screen on Raspberry Pi. Most LCD touch screens come with an OS image that you can write on to your SD card and run it…
In this post we will HACK ATX power supply to use it as a bench top power supply which can be used for different electronics projects. Parts needed An ATX Power supply. You can salvage from your old desktop computer.…
What is a relay? A relay in an electromagnetic device that is activated by a low voltage ranging from 3-12 v. When the electromagnet is activated it pulls a contact to make or break high voltage circuit. A simple relay…
Introduction In the previous part we have seen how to configure Azure for IOTHub. In this post we will cover setting up the Raspberry Pi and connecting it to the sensor and sending the data to Azure IOTHub. For more…