okidey
Netherlands
Asked
— Edited
Hello everyone, how are you?
I know there are several topics around relating to modifying the EZ-Board for use with an external power supply. I just need to check to confirm that I understand correctly before I start modifying the board.
As I understand it, the ports D0 - D14 power is originally supplied by the board, coming from the lead between ports D19 and D0 as shown in the picture below..right?
So, I will have to cut or interupt that lead to isolate those ports from the board's power like so..
Then I will simply need to reastablish power by connecting the leads of the external power supply to the last 2 pins next to port D14, as indicated by the red arrow, correct?
Do I understand all this right? Kristian.
How is all of this handled in the EZBv4?
@mayaway... This should help... EZB4 for delevolpers
Thanks! I've gone thru this again. It looks like I'd simply feed the EZBv4 power base with my SLA 6VDC and call it good! I'll want to hack the power switch since those are built into the back of my InMoov. Do you use the whole base and shell or just the naked board? I know the base contains a 20A fuse, and the whole business is rated for 5A continuous.
Yes.... for the ezb4's power pin (red)... voltage in = voltage out. There is no 5V reg'd power like an arduino has.... So using a 6v 12A SLA battery will feed your servos that are plugged into the ezb4 a full 6V
Thank you! Do you use the naked board? or the whole shell and case?
I usually use it in the shell... Convenient for keeping the on board speaker with the ezb. Plus it helps somewhat protect it from accidentally shorting out a digital port or whatever... However I have done a "break out" for an external speaker and power leads... Requires a bit of soldering though... There is actually "through hole" contacts on the board which are labelled if you wish to add an external speaker....
Thank you! I want to do the same. I have SLA 6VDC external power and two 5w - 8 ohm speakers in the head. I have five different soldering guns, irons and torches for everything from stained glass to plumbing, to heavy electronics to micro electronics. I've been messing with this stuff since I was knee high to a coke bottle!
A bit of reading but here a forum member did the sound breakout from the ezb4... Bear in mind you can breakout sound either pre-amped or bypassing the onboard pre-amp just in case to want a clean signal to amplify yourself... Sound Breakout How to