Making Your Own Arduino Part 1 (Burning Bootloader)
Need more Arduinos? Don’t go out and spend on another one. Why don’t make one yourself? In this post I’m going to focus on the heart of an Arduino, the Atmel ATmega 328P. A brief introduction on this little beast. 8-bit MCU 32kB Flash Memory 1kB EEPROM 2kB SRAM 23 general purpose IO lines 6-channel 10 bit ADC SPI and …
5 Digit 7-Segment Display
I’ve been working on a digital clock project so I thought I will get 4 units of 7-segment displays and put all of them on a PCB to show the time. When I was at the electronics store, I stumbled upon this. I bought this because it has 5 digits on a single package and it looks much neater than …
DS1307 Real-Time Clock IC
The DS1307 IC is used to accurately count time and date. Once set, and as long as it has power, it will continually count the time by itself. It uses the I2C bus to transfer data to the microcontroller. Below are the key features of this IC. Real-Time Clock (RTC) Counts Seconds, Minutes, Hours, Date of the Month, Month, Day …
Arduino Tip : Turn your Analog pins into Digital I/O
Recently I’ve just found out that I can actually turn my Analog input pins into Digital Inputs or Outputs. It’s really simple. Usually for the digital pins, we write instructions such as digitalWrite(13, HIGH). To do that with analog pins, simply use digits 14 to 19. Pin 14 being Analog 0, 15 being Analog 1 and so on. Or you …
Arduino Twitter Feed Viewer
The reason why I got the Ethernet Shield is because I found that there are lots of interesting things to do with it. One of it is to make the Arduino obtain live twitter feeds from the Internet and display it on an LCD. I got the inspiration from the example Twitter sketch in the Ethernet Library. I just modified …
Arduino SD Card
The Arduino Ethernet Shield I bought last week also has a MicroSD card slot on it. It allows the Arduino to read or write files on the memory card and this is particularly useful for data logging purposes. Yes, you can use the EEPROM on the Arduino but it’s only limited to 1024 bytes and it’s not removable. This shield …