Temperature Data Logger kit

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Question: The documentation states that the DS1820 was replaced by the DS18S20. Why did the kit contain DS1820?
Answer: The supplier includes either DS1820 or DS18S20 depending on availabilty. Either part will work with the kit

Documentation in acrobat format

Free software

(K145)

This is an 8-pin microcontroller based circuit for temperature data logging via the serial port of any computer from between 1 and 4 remote digital
temperature sensors, DS18S20 or DS18S20 made by Dallas.

Features.
• provides realtime data via the serial port
• interfaces up to 4 x DS18S20 sensors
• accuracy to 0.5 degrees centigrade
• fahrenheit scale selected by a jumper
• no external power required
• data stream easily logged & processed
• over 200m distance for each sensor
PCB size: 1 1/2"x1 1/2" (CPS145)

Quantity	Price
1 – 9	$27.13
10 – 99	$25.20
100 +	$24.36

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS145
Quantity Available:		6

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This item is related to the item below.

(Not Pictured)

Firmware chip ONLY for K145 / CPS145 / CPA145 Temperature Data Logger kit

(BB108)

Quantity	Price
1 – 9	$10.45
10 – 99	$9.90
100 +	$9.08

Skill Level of Item:		(Component or Part)
Product #		BB108
Quantity Available:		1

(Not Pictured)

DS1820 TO92 IC

The DS18S20 Digital Thermometer provides 9–bit temperature readings which indicate the temperature of the device. Information is sent to/from the DS18S20 over a 1–Wire interface, so that only one wire (and ground) needs to be connected from a central microprocessor to a DS18S20. Power for reading, writing, and performing temperature conversions can be derived from the data line itself with no need for an external power source. Because each DS18S20 contains a unique silicon serial number, multiple DS18S20s can exist on the same 1–Wire bus. This allows for placing temperature sensors in many different places. Applications
where this feature is useful include HVAC environmental controls, sensing temperatures inside buildings, equipment or machinery, and process monitoring and control.
GND
DQ
VDD
(BB042)

Quantity	Price
1 – 9	$8.99
10 – 99	$8.45
100 +	$7.99

Skill Level of Item:		(Component or Part)
Product #		BB042
Quantity Available:		13

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