dirtyhanfri
Well-known member
Hi all
I’m starting studying digital electronics, I’d like to learn how to use digital pots, switches and finally being able to interact with them from a computer interface.
I know it’s a long way but I have to start somewhere. I’ll get something running in real world and then try to move on to the computer side.
So I’ve been looking at digital pots. I understand the basics to control it with an encoder.
The thing is I’d like to use a led ring indicator to have visual feedback of the pointer position, and I’m not sure about few aspects here.
I guess I should use a led driver, what kind of IC I’m looking for? Would a simple lm3914 work here? Or I’m right suspecting the needing for a different IC here?
Encoder will give me two signals, Pins A & B, these are fed to the control pins on the digital pot. It’s ok just to parallel them to the led driver?
Maybe I need to use a multiplexer or a micro controller reading encoder signals and feeding different outputs to led driver and digital pot?
I’m really noob about digital electronics, so probably I’m making stupid questions, but I’d like to get a general idea about how everything interacts.
Then i will be able to do equally stupid but more specific questions
I’m starting studying digital electronics, I’d like to learn how to use digital pots, switches and finally being able to interact with them from a computer interface.
I know it’s a long way but I have to start somewhere. I’ll get something running in real world and then try to move on to the computer side.
So I’ve been looking at digital pots. I understand the basics to control it with an encoder.
The thing is I’d like to use a led ring indicator to have visual feedback of the pointer position, and I’m not sure about few aspects here.
I guess I should use a led driver, what kind of IC I’m looking for? Would a simple lm3914 work here? Or I’m right suspecting the needing for a different IC here?
Encoder will give me two signals, Pins A & B, these are fed to the control pins on the digital pot. It’s ok just to parallel them to the led driver?
Maybe I need to use a multiplexer or a micro controller reading encoder signals and feeding different outputs to led driver and digital pot?
I’m really noob about digital electronics, so probably I’m making stupid questions, but I’d like to get a general idea about how everything interacts.
Then i will be able to do equally stupid but more specific questions