power

Flex Sensor Interfacing

Flex Sensor Interfacing with AVR Microcontroller Using Atmega

In this tutorial we are going to interface FLEX sensor with ATMEGA8 microcontroller. In ATMEGA8, we are going use 10bit ADC (Analog to Digital Conversion) feature to do this job. Now the ADC in ATMEGA cannot take a input more than +5V. What is a Flex Sensor? A FLEX sensor is a transducer which changes its resistance when its shape …

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Schematic Cheap CO2 meter

Cheap CO2 meter using the MQ135 sensor with AVR ATmega

MQ135 is an Air Quality Sensor suitable for detecting of NH3, Alcohol, Benzene and other gases. The description below, is what i derive from the poor datasheet of this sensor, it may be uncorrect, so if you have suggestions please leave me a feedback. The “sensitivity characteristics of the MQ-135” figure of the datasheet, you can see it …

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remote temperature humidity sensor

Make your own remote temperature/humidity sensor using atmega

Hardware components: Atmel atmega 328p-pu × 1 ControlEverything.com SI7020-A20 I²C Humidity and Temperature Sensor ±4%RH ±.4°C × 1 433 MHz transmitter / Receiver kit × 1 AMS1117-ADJ voltage regulator × 1 Capacitor 100 µF × 1 Capacitor 100 nF × 1 Resistor 1k ohm × 1 Resistor 10k ohm × 1 LED (generic) optional × …

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Basic User’s Experiment Notes

Basic User’s Experiment Notes Using Atmega

The “Basic User’s Experiment Note” is based on the popular 8-bit Atmel AVR ATmega328P microcontroller using AVRJazz 28PIN development board. This e-book covering most of the Atmel AVR ATmega328P microcontroller important features. With almost 140 pages, this e-book is organized similar to many of the ermicroblog’s project pages where it used many important information inside …

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Power factor measurement

Power factor measurement using Atmel AVR Micro-Controllers

To learn about the power factor measurement, you should have a basic knowledge of power factor. There are three types of loads. Resistive  Inductive Capacitive When we apply AC voltage to resistive loads it will not change the current wave form. But inductive loads will force to lag the current waveform and in the case …

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