Use a damaged computer mouse to control the Yaesu rotor G-5400B is a project very easy and the price is only the DIN plug.
The idea was is the file of the projects some time ago and now was made in a few minutes.
Some times is very difficult have our hand and arm up pushing the switches of the control box rotor. We need our hands free to work with the equipment VFO’s, write, etc.
The control box of the Yaesu rotor G-5400B have back of the box a female DIN 8 pin plug, like you can see in the figure 1 and 2.
The pinout is:
Pin 1- Voltage of 0 to 12V indicates the azimuth position.
2- Voltage of 0 to 12V indicates the elevation position.
3- Connecting these pin to the ground (8) the rotor turn to the left.
4- Connecting these pin to the ground (8) the rotor turn to the right.
5- Connecting these pin to the ground (8) the rotor go down.
6- Connecting these pin to the ground (8) the rotor go up.
7- 15 V DC
A computer mouse have two, three or four switches, I have used a mouse with three switches but is better found a mouse with four because we need switches for UP, DOWN, LEFT and RIGHT.
The mouse that I have used with three switches have a fourth switch down the mouse (the old mouse have down a switch to move to DOS or MS, Fig. 3) , these switch can be used to use the central switch of the mouse for move the rotor to the right or move up the rotor.
The diagram of the figure 4 indicates the function of these fourth switch and the others like the connections to the DIN plug in control rotor box.
Open the mouse and solder the wires to the mini switches of the mouse and to the 8 pin male DIN plug is very easy. I have used the original cable of the mouse and after made all connections I have check all with a multimeter, because we have a voltage of 0 to 12V in pin 1 and 2 of the control box rotor.(Fig.5)
To terminate the project we need to label the switches of the mouse with LEFT, RIGHT, UP and DOWN. (Fig.6)