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LCD thermometer 1 - Build your own temperature meter for fun. This project
uses the Microchip TC77 digital temperature sensor, a PIC16F871 microcontroller and a
7-segment 3˝ digit LCD. You can study the source code on how to drive an LCD
display….. [Peter Jakab, Electrical Engineer, Engineer of Informatics] |
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LTC1392: Temperature & Voltage Measurement in a Single Chip - DN106
Design Notes (Linear Technology) (app note added 1/06) |
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MicroMinimal Thermometer - ….must register on this site.... [Published in
Elecktor July/August 2010] |
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Micropower Thermometer - National Semiconductor Application Note (app
note added 2/06) |
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PC Based thermometer Based on Dallas DS1621 - (electronic circuit added
4/05) |
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PC Thermometer - (electronic circuit added 09/05) |
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Quartz crystal-based remote thermometer features direct Celsius readout -
17-Mar-05 Issue of EDN Although quartz crystals have served as temperature
sensors, designers haven't taken advantage of the technology because few manufacturers
offer the sensors as standard products (references 1 and 2]. In contrast to
conventional resistance- or semiconductor-based sensors, a quartz-based sensor
provides inherently digital-signal conditioning, good stability, and a direct digital
ou.... [Design Idea by Jim Williams and Mark Thoren, Linear Technology Corp; Edited by
Brad Thompson] |
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Temperature & Voltage Measurement in a Single Chip LTC1392 - DN106
Design Notes (Linear Technology) (app note added 1/06) |
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Temperature controller - Schematic only, no circuit description |
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Temperature Controller - Remote sensor sends data via mains supply
Temperature range:00.0 to 99.9 °C.... |
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Temperature Controller (AVR + DS1621) - Wine doesn't like subzero
temperatures, and during wintertime, my "winecellar" got pretty cold. There was an
electric heating element, but the thermostat was broken, so it was either full burn or
nothing. That's how the temperature monitor/controller came to be. It was an obvious
task for a small processor and I've always wanted to test the Dallas temperature
sensors. So, I designed this little device which could monitor the temperature and
control the heater. It's based on an AT90S2313 and a Dallas DS1621 Digital
Thermometer. The temperature is displayed on a dual 7-segment.... |
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Temperature Measurement - Measures temperature via SMT160-30, shows it on
LCD and communicates with RS232 (sends values of temperature to terminal ....
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Thermocouple Interfaces to Serial Port - 11/09/95 EDN-Design Ideas....The
circuit in Figure 1 acquires temperature data via an IBM PC serial port using a
thermocouple-based sensor. The sensor is a type-K (chromel-alumel]thermocouple. When
in contact, the dissimilar metals produce a potential difference that is a function of
temperature. Additional thermocouple junctions.... EDN is migrating links. This link
is not verified. Search the "title" + "EDN" for new link. |
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Thermoelectric Controller Scriptable Thermometer - A unified thermometric
controller that can be programmed with simple scripts, integrating the "classic"
thermometer/controller pair. You can build a variety of simple machines with the same
hardware and a different script : a charting thermometer, a vending machine that dials
your number when empty, a leavening cell(added 6/06) |
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Thermometer - (application / block diagram added 6/07) |
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Thermometer Applications of the REF-02 - AN-18 Analog Devices Application
Note....[App Note] |
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Thermometer with Four-Digit LED Display - Until recently, the Philips
SAA1064 LED driver IC has been a sort of unofficial standard for driving seven-segment
LED displays. It can be used to implement four-digit displays that can be driven over
an I2C bus….must register on this site.... [Published in Elecktor July/August 2010] |
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Thermostat With Adjustable Hysteresis - This small thermostat allows you to
select the size of its hysteresis. You can set both the temperature at which the relay
will energize, and the temperature at which the relay will de-energize. The difference
between these two temperatures is the hysteresis.... [Circuit Design by Ron J.] |
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Thermostat with LED Temperature Display - I needed to replace two old,
unreliable thermostats for controlling the heating and cooling for a large garden
shed. Commercial basic thermostats are available quite cheaply, but some lack the
ability to control heavy loads or have the extra features that I require for saving
energy when the door is often left open or to indicate temperature being out of range
etc. I like the PIC18F1320 microcontroller used in my previous project, so decided to
use it again in a very similar design to drive three multiplexed LED displays and read
the temperature from a Dallas/Maxim DS18x20 "1-Wire" sensor. ….(design added 11/08)
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Transistor Forms RS232C Digital Thermometer - 05/09/96 EDN-Design
Ideas....An ordinary transistor can serve as an uncalibrated temperature sensor
(Figure 1)for an accurate, PC-compatible thermometer. Unadjusted accuracy is more
than0.5°:C over the -50 to +50°C range, and the only limitation on resolution is the
time devoted to measurement acquisition. For example,0.1°:C resolution requires....
EDN is migrating links. This link is not verified. Search the "title" + "EDN"
for new link. |
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