Logitech 161A PS/2 to USB/Leonardo (t-sbc12-cpq)

So, on taobao.com I found this device from Logitech and in my backpack I have Logitech m570 for 5 years. I am a fan. And I am going to build keyboard and was planing to add thinkpad mouse inside, but after finding this I am going to implement in my future build. In this instruction I will show you how to use this module and how you can modify it 

you need soldering iron or jumpper wires for testing.

1. Soldering iron.
2. Logitech A161
3. jumpper wires
4. arduino Leonardo/ Pro micro/ Uno/ nano/ ESP
5. PS/2 USB adapter

you can get it on this links:

https://item.taobao.com/item.htm?spm=a1z09.2.0.0.2ab82e8dM0VbMU&id=629074447560&_u=22u9lum46b93

https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313&_nkw=+T-SBC12-CPQ&_sacat=0&LH_TitleDesc=0&_odkw=logitech+a161&_osacat=0

I soldered wires to make it easy for me to use it on breadboard, you need 4 wires to use ball and buttons, using data and clock we are able to read mouse moving informations and button clicks in numbers. then I am able to modify ection it can call in computer.

this connection is not mandatory, you can use different pins.

GND-GND

VCC-VCC (3.3 or 5V)

Data - 3

Clock - 9

you are going to need this library: http://github.com/kristopher/PS2-Mouse-Arduino/

Using simple.ino- you can monitor serial to see what is changing when you move the ball.

I found this code somewera do not have sourse link.

inside the code you will se aray of "data" [0]-- will give you info of ection.

1. 8- nothing is moving, no button is pressed
2. 10- left button
3. 9 - right button
4. 11 - left and right together are pressed
5. 40 - mouse is moving left or up while left button is pressed
6. 24 - mouse is moving rigt or down while left button is pressed
7. 42 - left button is pressed and mouse is moving left or up
8. 26 - left button is pressed and mouse is moving right or down

if you read [1] ( left -right X access) walue will change between -7 to 7 deppends on the speed.

if you read [2] ( up -down Y access) walue will change between -7 to 7 deppends on the speed.

here is commands for Mouse.h library: https://www.arduino.cc/reference/en/language/functions/usb/mouse/

using this code you can move mouse and monitor it using serial.monitor, I am not using on board buttons, because it was too complicated for me to because [0] incoming data was not stable or my programing skills.

 if ((data[2]!=0)||(data[1]!=0)){  // reading ball moving and converting to pixel movment

   Mouse.move(-data[1]*2, data[2]*2, 0); // (0,0,0)==(x,y,scroll)

   Mouse.move(-data[1]*2, data[2]*2, 0);

  }

you can use Mouse.h library to send more comands to computer

becouse mouse was slow I multipled it by 2 to make it faster

// -data[1]*2<< here I am reversing incoming x acces data to make it to go wright side

I can not get this adapter by the time I am uploading this project, if I get my hands on it I will update this project. I hope it will work better with the buttons, but I like an idea of using leonardo, or pro micro , becouse I can modify speed and extra extons, I am going to add 4-6 buttons for custom extions.