Interfacing PIC12F1822 with 1602 LCD and LM35 temperature sensor

This post shows a simple interfacing of PIC16F1822 microcontroller with 16x2 LCD and LM35 analog temperature sensor. The LM35 temperature sensor is a three pin device (VCC, OUT and GND) with an output voltage linearly related to Centigrade temperature. Since the LM35 output varies with dependent to the temperature we need ADC (Analog-to-Digital Converter) module to measure this voltage. The LM35 output has ...

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CH340E, A NEW SMALL SERIAL TO USB CHIP

WCH, a Chinese integrated circuits manufacturer, has just released a new serial to USB chip called CH340E. Unlike other CH340 chips, it doesn’t require an external crystal and also needs less PCB space and BOM. CH340 is a 3x3mm tiny chip comes in MSOP10 package and has 10 pins. Although it is smaller than other alternatives, it is a little more expensive than them. But considering other components and PCB s ...

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projects or dual channel inductive loop vehicle detector

Specifications Number of operating modes: 4 Tuning: Automatic Detection type: Presence/Pulse Presence time: Adjustable in 3 steps Pulse duration: 250 ms / 500 ms Signal filtering: Adjustable in 2 steps (NORMAL, HIGH) Loop inductance: 20 uH – 1000 uH Frequency range: 20 kHz – 145 kHz Frequency selection: 2 combinations (LOW, HIGH) Sensitivity: Maximum 0.0025\% Δf/f, adjustable in 8 steps Detection speed: 10 ...

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3A THERMOELECTRIC COOLER (TEC) DRIVER

3A TEC Driver Module is a complete power stage solution to drive Thermoelectric Cooler (TEC). The required DC voltage input controls the output current. It consists of the Texas instruments DRV593 power driver IC, along with a few discrete passive components required for operation. It also includes jumpers for configuring the features of the device, LEDs for fault monitoring, and an output filter. The 4 Pin ...

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How to Select a Voltage Regulator

All electronics projects need power. Power can come from either stored energy in a battery, or directly from mains AC voltage or DC power from renewable sources such as solar energy. Power Management ICs (PMICs)help manage the power requirements in a system including scaling voltages, battery charging, and DC-DC conversion. Choosing the right PMIC can make a difference in whether the final product becomes s ...

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High/Low Voltage Detection and Protection Circuit using PIC Microcontroller

High and Low Voltage Power Detector Circuit with Message Alert using PIC Microcontroller We often see voltage fluctuations in electricity supply at our home, which may cause malfunction in our home AC appliances. Today we are building a low cost High and Low Voltage Protection Circuit, which will cut off the power supply to the appliances in case of High or Low voltage. It will also show a alert message on ...

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AC Voltage measurement using PIC16F877A microcontroller

AC voltage measurement using pic microcontroller and op-amp.You have came across many online tutorials  on various websites about voltage measurement using different microcontrollers. But all these tutorials are about measurement of low  DC voltage.In this project, you will learn how to measure high AC voltage using PIC16f877A micrcontroller. Page Contents [hide]   1 Alternating voltage measurement : 1 ...

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alternating current measurement using pic microcontroller

alternating current measurement using pic microcontroller. In this artcile I will discuss how to measure alternating current using current transformer and pic microcontroller. After reading this, you will be able to design AC Ammeter using PIC16F877A microcontroller. It is very important task in pic microcontroller projects. I have already posted a dc current measurement circuit with code. you can also read ...

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A new multi-function power supply unit for my Embedded Lab

One important parameter in embedded system designing is power consumption. This parameter is directly related to the battery lifetime, if the system is to be powered from a battery. In order to determine the power rating of your designed system, you need to know how much current the system draws from the source at a given voltage. While working on my projects, I usually measure current by placing an externa ...

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LM386 based stereo audio amplifier with digital volume control

Due to its simplicity (requires minimum external components) and high availability, LM386 is very popular among hobbyists for use in low-voltage audio amplification applications. Most of the time a potentiometer is used at the input side of LM386 to provide a volume control in the output speaker. The potentiometer does not control the gain of the amplifier itself, but it creates a voltage divider network at ...

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