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Showing posts from March, 2015

Weekend Project – Arduino Temperature Meter

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Found an interesting temperature probe on the auction site and I decided to acquire two pieces to test them out. With the LCD module, it seems making a temperature meter is not that hard at all. In this tutorial, I will show you how to make a temperature meter that allows you to measure temperature with a probe and display current, highest, and lowest temperatures on LCD module. After I made this, I left it on the desk almost a week and it’s still working!  I guess it’s time to share how I did this. Get DallasTemperature Arduino Library  here! Get OneWire Arduino Library here! See photo below: Material Needed:  Arudino Mini Pro * 1 LCD Module 4 x 20 (J204A) * 1 Temperature Probe (DS18B20) * 1  Protoboard * 1  22k resistor * 1 Few jumper wires Wiring: Arduino-GND to GND  Arduino-VCC to VCC  Temperature probe-GND to GND  Temperature probe-VCC to VCC  Temperature probe-Data to 2.2K resistor to VCC  LCD-GND to GND  LCD-VCC to VCC  LCD-SDA to Ar

Arduino - DFPlayer Mini MP3 Module

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Arduino - Test DFPlayer Mini MP3 Module I found DFPlayer mini MP3 module on China auction site Taobao when I was looking for a MP3 player module for an Arduino projects.  This module is quite small and it only require few pins connections to Arduino and a speaker to work.  Looks really nice for my little project. Actually, the module is quite capable and complicated, if you were interested, please visit this  page . This tutorial here is just to show you how to connect DFPlayer module with Arduino and speaker and the Arduino sketch provided here just to play few sample sounds I collected from Internet. First, I recycled a 2W, 4Omh small speaker from this little music box. Material Needed: DFPlayer Mini module  Speaker - DFPlayer module support to to 3W SD card - 2GB ~ 32GB formatted with FAT or FAT32 MP3 / WAV - audio files Arduino mini Pro Few jump wires As you can see the illustration below I made in Power Point, hardware connection is quite simple (