24LC256 EEPROM on Arduino

About: I picked up a few 24LC256 eeproms to get some more external memory for future projects. These eeproms hold around 32Kbytes which is more than enough for a basic data-logger or for storing specific values. You can hookup 4 of these chips together to get a whopping total of 128Kbytes of external memory. These chips are great not only for the memory but also because they are I2C. Don’t let this scare you, there are many libraries for I2C eeprom chips. I2C is also great because it only uses 2 analog pins of your arduino. The I2C pins on the arduino are analog pin 4 and analog pin 5. For this tutorial I followed Hkhijhe example and his functions.

Objective: To connect a I2C eeprom to the Arduino Uno.

Instructions: For the breadboard schematic below for how to connect the 24LC256 to the Arduino. Continue Reading

How to make a basic standalone Arduino

About: When you are done with your arduino projects and are ready to make them more permanent you have to take your arduino off its programmer and build it on a breadboard or PCB. This makes the circuit more final and permanent. It is very simple to build the standalone arduino and it shouldn’t be intimidating at all. You just need a few basic parts that you might already have laying around. This tutorial will not include a serial connector so you will have to continue to burn new code to the arduino on the programmer and transfer the chip to your breadboard or PCB. You should always use a dip socket so you don’t solder your arduino to the PCB allowing you easy access to swap programs or chips.

Objective: To build a basic bone-dry standalone arduino on a breadboard or PCB.


  • ATMega168/ATMega328 (Your Arduino Microcontroller)
  • 16Mhz Oscillator Crystal
  • 7805 Voltage Regulator (5V Voltage Regulator)
  • 2x 22pF Capacitors
  • 2x 10uF Capacitors

Instructions: Follow the schematic in the reference section. This will show you how to build a basic standalone arduino. Refer to the pin mapping diagram after you are done to connect your pins. Remember this won’t let you upload code to the arduino. You will have to continue to use your arduino programmer and place the chip in the circuit. Continue Reading

Hello world!

Hey welcome to my lab!

My name is Kamil and I do a lot of repetitive things when it comes to my projects. I decided to make a blog about the things I do, so that I can find the things I do constantly easier. Since this is on the web you all will be able to benefit from this and learn news things as I learn them.

The site will focus on arduino and raspberry pi tutorials as well as some basic hacking and programming. Thanks for visiting!