1.**Install the Board Manager** for your AT tiny : copy paste this link into Parameters > additional board manager URLs : https://raw.githubusercontent.com/damellis/attiny/ide-1.6.x-boards-manager/package_damellis_attiny_index.json
2.**Download the library** : Tools > Board > Board Manager > Research Library > ATtiny by David > Install library
3.**Set up the Arduino as an ISP** (programmer) : File > Example > ArduinoISP and upload the file to your Arduino (which is not connected to anything else !)
4.**Circuit** connect components as seen on schematics
5. If it is the first time you are using your ATtiny 45/85, you have to **Burn Bootloader**
6.**Circuit** Connect the other components of your circuit, for example your LED and 220 ohms resistor
7.**Upload sketch** to the ATtiny : Open sketch > Make sure the pin correspond to the Attiny pins > Sketch > Upload using Programmer. If it worked you should see your circuit working following the sketch. If not check your connections
@@ -29,7 +43,7 @@ Here is what I had when connecting the matrix to Arduino (Serial Plotter) and us
Then, I connected it using Processing software. When using processing I struggled to find the right serial port. It was telling me the port was busy with a JBL GO or a Iphone despite the fact that I hadn't any of those with me... I checked on the port number of the USB modem on Arduino and it was the 7th ! so I just add this number on the line : String portName = Serial.list()[**7**]; aaand it worked ! Happy me :)
**Note** You can have a look at how many ports your computer have register in arduino > Tools > Port. The first port of the list is the number 0.
**Note** You can have a look at how many ports your computer have register in arduino > Tools > Port. Then try with all the numbers, depending on the computers/versions the counting system is not the same (start from top or bottom). Also remember that the first port is number 0 and the second number 1, etc...
