bobsun
Full Member level 2

Hello,
I would like to ask a question on board connection.
What should I do if I want to connect two boards together? One is the main IC board containing the CPU, DDR2 as well as auxiliary chips; Another is basically an extension/connector board which several (for testing) LCD displays, motors, LEDs and keyboards are connected.
The main board is a “master” which controls the extension board:
Most obviously, for purpose (1) I need to make the grounds on the two boards the same, and I am considering using either a jumper wire or a connector (whatever suits) to connect the GND of the two boards together. I have never tried this before, so:
Bob
I would like to ask a question on board connection.
What should I do if I want to connect two boards together? One is the main IC board containing the CPU, DDR2 as well as auxiliary chips; Another is basically an extension/connector board which several (for testing) LCD displays, motors, LEDs and keyboards are connected.
The main board is a “master” which controls the extension board:
- The main board uses GPIO pin for controlling H-bridges on the extension board in order to control motor mounted on the extension board.
- The main board output video signal to LCD displays on the extension board.
Most obviously, for purpose (1) I need to make the grounds on the two boards the same, and I am considering using either a jumper wire or a connector (whatever suits) to connect the GND of the two boards together. I have never tried this before, so:
- Is it correct and safe? Is there any possibility for damaging the master board by current?
- Any recommendation on other good practices for connecting two boards?
Bob