[Coco] Wiring inputs to the Coco

[Jamie]

Thanks for this!  Looking for projects to connect to the outside world.
Jamie


For those not really handy at building circuits for your Coco.... The ORC-90 sound cart has two, eight bit output chips that are used to create the sounds. These chips can also be used to control SIXTEEN relays or transistors to control other things. The 16 bits can be used for other things as well. All that needs to be done is remove/cut the resistors that connect the outputs of those two chips and use the pins to safely drive your outputs. From there, you can easily make the circuits to drive other things. Turn LEDs on and off, activate relays, cause fires in your computer, whatever you can think of. Easy stuff here. You can also copy the design and ad more stuff, as the original design leaves room for MANY more chips to add MANY more input and output chips. More than you should ever need!! This would be easy to do using the ORC-90 cart because the groundwork is already there. However, you need to be cautious with your soldering and design. I've done much the same thing with an RS232 cart. The decoding chip is already there and there is still room for adding more stuff. Many possibilities to play with and learn. You don't have to build a totally new board to connect to the outside with you Coco. Just use the carts that are already available and add to them. I know that most of us are already familiar with this sort of thing and are into creating new and powerful new things for our Cocos but, for beginners, these are suggestions on how to connect to the outside world with a Coco without building a new circuit board to connect to the Coco. George 

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