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DCF77 clock-thermostat using PIC16F648A

Always at the right time your house on temperature This project make use of a PIC16F648(A) and a DCF77 receiver from Conrad (Orderno. 64 11 38) With DCF77 runs the clock from the thermostat always on the right time. Synchronizing isn't necessary anymore. The temperaturesensor is a DS1820 or DS18B20 and on a HD44780 (or compatible) 2x16 LC-Display becomes day, date, time, temperature (with 0.1°C precision) a ...

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Arduino powered temperature sensing RGB LED nightlight using PICaxe

About a year ago I started on a project to make a temperature controlled nightlight. I was inspired by seeing these lovely LED lamps styled as mushrooms growing out of pieces of wood. Those mushrooms were made out of glass, which was somewhat beyond my skills. However I then saw some had used translucent sculpey to make mushroom nightlights on instructables. So with that discovery it seemed like it would be ...

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Homemade temperature LED display for PC using PIC16F876

Since I started my watercooling prejoect, I have been verry interested in how well it perform, the only way is to measure all temperatures before and after, The motherboard temperature sensors is useless unacurate, so I'm using LM50B By using this LM50B sensor I get 1 C of real accuracy I use a PIC16F876 to drive a four two digits LED displays, the PIC16 has 4 analog inputs with 10 bits resolution, now I ca ...

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Digital Thermometer Using PIC16F688 microcontroller

Digital thermometers are cool devices as they show temperatures in human readable formats. This digital thermometer project is based on a PIC16F688 microcontroller and a DS1820 temperature sensor, and it displays temperature on a character LCD screen in both Celsius and Fahrenheit scales. I selected PIC16F688 for this project because it is cheap (I bought one for $1.50). DS1820 is a 3-pin digital temperatur ...

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Roll and Temperature sensor applications using PIC18F2550

This page will show you how to use the TD-CMP modules in a way which fits you most.   Here are the technical specifications of the modules: Compass: Resolution: 1° - Accuracy: 3° Tilt/Roll: (TD-CMP02 and TD-CMP03 only) Resolution: 2° - Accuracy: 5° Temperature: (TD-CMP03 only) Resolution= 1°C/F - Accuracy =1° New: Sampling rate: 12,5 to 25 samples/second. Easy Tilt/Roll calibration.(TD-CMP02 and TD-CMP ...

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A Digital temperature meter using an LM35 temperature sensor using PIC16F688

Introduction A digital thermometer is a good choice of project for beginners who just stepped in to the world of microcontrollers because it provides an opportunity to learn using sensors to measure the real world signals that are analog in nature. This article describes a similar project based on a PIC16F688 microcontroller and an LM35 temperature sensor. LM35 is an analog sensor that converts the surround ...

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Experimenting with a thermistor using PIC16F1937

Recently i won a bid for a batch of 10K thermistors. The only thing that i knew when i got them in my hand, was that those things are 10K thermistors. As far as i know, the 10K nominal resistance is at room temperature (25�C). But i had to find out if these are PTC or NTC, and also i had to draw their resistance to temperature characteristic line, otherwise they would be useless to me. So i ran some experim ...

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Low power temperature data logger using PIC18F27J53

Design Goals DIY Friendly – Something that the Make audience could easily build Improve the reference design – Better measurement resolution, better timing, lower power, non-stop logging Minimal parts count – Lower cost and shorter build time Powered by a single 1.5 volt cell (AA, AAA, N or similar) and optional supplementary solar power Parts Selection One of the design goals is to use the fewest parts nee ...

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A Beginner’s data logger project using PIC12F683 microcontroller

It is a very simple data logger project based on PIC12F683 microcontroller. The microcontroller reads temperature values from a temperature sensor on a regular interval basis and stores them into its internal EEPROM memory. The recorded temperatures can be later transferred to a PC through serial interface. I originally published this project on electronics-lab.com last summer. I thought this could be a ver ...

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Enhanced 5/2-day Central Heating Programmer with serial computer interface using PIC16F628A

Overview This project has come about from my desire to control my home heating from work.  As I have a VPN between work and home a straightforward relay controlled from a PC would seem the easiest solution.  However I also wanted a control unit that I could operate in the house without resorting to the computer.  For example, I get up late and the heating is off, I just want to hit a button and turn it on.  ...

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