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Micro I2C-Scanner with 0.96" Oled and ATtiny44

Status: Proposal
December 5, 2016
The scannder displays all attached devices on the screen in a small matrix. The value is already shiftet to the left. The columns show the upper nibble und the rows the lowe. As it is already shiftet, there are only even numbers in the lower nibble. 
The thing is built with a 0.96" oled display that plugs into a little PCB with the same size. It is driven with a ATtiny44 with two software I2C ports (one for the display and one scan-port).
As the tiny44 does not have enough ram for a screenbuffer and the little boxes are not alignet to the rows it need a simple but nifty algorithm to calculate the screen in realtime. 
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The doublesided PCB enables to make nice captitions for the connections
The thing
Here it is connected to a EEprom on a breadboard with variable address input
The upperside with the components
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