Tagged Questions
3
votes
1answer
81 views
Connecting a N.O. grounded switch to a scanning switch matrix
I am working on a project that includes a scanning switch matrix. It also includes a joystick with an integrated push button. I am out of IO pins on the micro, but there are gaps in my switch matrix, ...
1
vote
1answer
227 views
How can I matrix switch multiple lines, including power?
I have devices with several similar boards, all of which are basic computers (with CPU, RAM and ROMs etc.). They all interface to the I/O unit via a standard connector, although the connectors aren't ...
3
votes
2answers
697 views
Driving a LED Matrix with a N-channel MOSFET (2N3819) using an AVR
I am trying to wire up a LED matrix using a FET transistor as a switch.
The AVR will be connected to the gate. To turn the LEDs on I have drive the pin connected to the transistor gate low, right?
