AVT1697 / 2 / G A + - LED thermometer - 27mm green. PCB boards and programmed layout

Description

Thermometer measuring temperature in the range -55ºC to + 125ºC. 'Large-size', because it works with two displays of various sizes.

The first, miniature LED display with a digit height of 7mm (AVT1697 / 1), can be used to indicate temperature, e.g. in a car. The second one with displays with 27mm mark height (AVT1697 / 2) ideally suited as a temperature meter that allows it to be read from long distances, e.g. in production halls. The system should be powered with a constant voltage of 7..15V. The thermometer's work is controlled by the ATTINY2313 microcontroller. Temperature indications are updated every 2s.

Project AVT 1697 EP 08/12

properties

• Range of measured temperatures: -55 ° C to + 125 ° C
• Work with sensors DS1820 / 18S20 / 18B20, automatic recognition (DS18B20 included)
• Update of indications every 2 seconds
• Measurement accuracy (DS18B20): ± 0.5 ° C (from -10 ° C to + 85 ° C), ± 2 ° C (from -55 ° C to + 125 ° C)
• Reading resolution (DS18B20): 0.1 ° C in the entire measuring range
• It does not require calibration
• Reading field: green LED display 4 digits with a height of 27mm
• Power supply: 7 ... 15VDC, 300mA
• Dimensions of the plates: 97x34mm and 32x26mm

Included

• A set of printed circuit boards and a programmed layout