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3 Posts authored by: kk99
kk99

Simple thermometer

Posted by kk99 Jan 6, 2017

 sevensegtherm

I would like to show you a simple thermometer with single seven segment LED display HP 5082-7356, DS18B20 sensor and Digispark module. DS18B20 sensor is able to measure temperatures in range form -55 to 125 °C. Digispark module communicates with DS18B20 sensor by 1-Wire interface and reads temperature every 10 seconds. Value of temperature (stored as integer) is displayed on HP display.

Schematic:

schematic

Video:

 

Source code:

sevensegtherm

kk99

Infrared thermometer

Posted by kk99 Jan 2, 2017

pyrometer

I would like to show you a infrared thermometer with MLX90614 sensor, seven segment display HP QDSP-6040 and ATtiny2313 MCU. Sensor allow to measure temperature in following ranges:

1) -40 - 125 °C - in case of measurement of sensor temperature,

2) -70 - 380 °C - in case of measurement of object temperature.

In project is implemented only measurement of object in Celsius degrees.

 

ATtiny2313 MCU communicates with sensor by SMBus. Measured value of temperature is shown on display. Current per single segment of display is configured to 4.67 mA, so display can be easily driven directly from MCU. In first solution as power supply was used ML2020 battery, but it was replaced with 200 mAh battery with TP4056 charger module. Housing was made from epoxy resin.

 

Schematic:

schematic

Images of first version:

pyrometer

 

pyrometer

Images of second version:

pyrometer

 

pyrometer

Video:

Source code in attachment.

ledstar
Hi,
I would like to show simple Christmas decoration. Cotton LED star was made from 5 orange LEDs, few pieces of hotmelt and cotton thread. Each LED diode is controlled by Digispark module with ATTINY85 module. Program was written in C language.

Schematic:

schematic

Photos:

ledstar

ledstar

ledstar

Video:

 

Source code in attachment.

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