You Are Here: Home » AVR ATmega Projects (Page 3)

Cellular Data Logger

Story I have been collecting data from Raleigh's trails and parks for the last couple years.  My primary platform has been a custom Arduino board I developed for low-cost (hey, these things may get damaged or stolen) and long battery life.  I wanted a connected sensor to provide current data and, after looking at various technologies, I have settled on cellular as the most convenient.  This sensor uses an o ...

Read more

Physical computing with ATtiny

Story I have a nice "carranca" (or wall mask) from Chile that stands in my corridor. It's a very beautiful decorative mask that I liked from the very first moment I saw it at the shop. Few weeks ago I wondered if I could bring it to life by adding a motion sensor and some lights in it, since it has three convenient holes (two for the eyes and one for the mouth) and enough space on the back for housing wires ...

Read more

POV Cylinder with Arduino Due

Story Introduction This is my first Arduino project. My work was inspired by several maker projects that created Persistence of Vision Displays [2,3,4]. Persistence of vision (POV) refers to the optical illusion whereby multiple discrete images blend into a single image in the human mind and believed to be the explanation for motion perception in cinema and animated films [1]. The projects [2,3,4] implement ...

Read more

AVR VideoBlaster: How about NTSC color video on a single chip with just 2 resistors?

Story More VideoBlasting So why didn't the TVout library reach any higher resolution than 160x100? The answer is simple. They did not use any hardware onchip to push the pixels out. If you use the SPI to push the pixel you will gain an immediate 1:1 in pixelspeed The SPI push out data at the CPU clock / 2. That is the maximum speed that the chip is capable of. On a 16MHz chip, that is an impressive 8mbps. T ...

Read more

OLED on the Cheap!

Things used in this project Hardware components: OLED 128x64 SPI-capable Available on Aliexpress or eBay for $4 to $20 × 1 For standard Arduino platforms, use the unmodified Adafruit libs × 1 Story I like cheap electronics for playing. Cheap is good for budget conscious hobbyists and China is delivering lots of toys for playing - one being the inexpensive "mono" OLED displays.  The single-color displays oft ...

Read more

Tinker’s Word Clock – REVISITED! NOW 110% more AWESOME

I have been tinkering with Word Clocks for years. There is only one thing I like more than making word clocks… it’s designing them so that they are easy to put together. This tutorial will go through my latest version (5!!!!!). By the end of it you will have a clock with: User selectable colours (Red, Blue, Green, Yellow, Pink, Purple) Beautiful clean crisp letters An understanding of what is inside and how ...

Read more

nRF24L01+ with ATtiny85 3 Pins

Story This would be the continuation of my previous project Programming ATtiny85 with Arduino Uno. Now with cheaper ATtiny85 in place I was looking for cheaper ways to transmit the sensor data. Which brought me to nRF24L01+ a cheap, low power RF transceiver. This seemed to be the better solution for me. But there was one problem, limitation in number pins in ATtiny85. I can't connect both nRF24L01+ and the ...

Read more
Scroll to top