I'm an electronics Noob with a project that I'm ready to move to PCB.
I have a working Breadboard and also stripboard version.
Simple question with what appears to be no simple answer that I can find:
With a 2 layer PCB with through hole components should I have a ground plane on:
a) The same layer as the majority of the signal traces b) The opposite layer c) Both.
My project is quite simple with the following major components:
- Arduino Pro Mini 5v
- DS3231 RTC (I2c)
- 1602 LCD
- 3xAAA batteries.
- Momentary switch.
I use PWM and a capacitor instead of a pot to control contrast of the LCD. I mention this in case it would be classed as a mixed signal (digital and analog) situation.
I have read a lot but it seam the more I read the more complicated this subject gets. I suspect that my project would (and indeed it appears to) work perfectly well without a ground plane. But I would like my design to be close to best practice where appropriate.
Any help or pointers anyone has would be great.