I notice there is a problem of power on PIN 1 and PIN 2 of DIN connector of Roomba 521...I have only 0,5 V but it's expected 12V...motherboard damaged?
$\begingroup$
$\endgroup$
1
-
1$\begingroup$ why are you assuming that the motherboard is damaged? ... check the battery $\endgroup$– jsotolaCommented Jul 23, 2019 at 2:32
Add a comment
|
2 Answers
$\begingroup$
$\endgroup$
I find right answer:
with connected broken buck converter I measured 0V, but removing broken buck converter all work fine and I can measure 12V.
$\begingroup$
$\endgroup$
2
This normally happens when you don’t use both power pins together, in order to get full voltage both pins must terminate into 1 wire or trace.
-
$\begingroup$ I used only PIN1 for 1 months with full 12V....you suggest to join PIN 1 and PIN2 in parallel? I have to do the same with ground PINs? $\endgroup$ Commented Jul 24, 2019 at 15:10
-
$\begingroup$ Yes I had the same issues when first attempting to use the battery to power a micro, in the end I joined both power pins in parallel and both ground pins in parallel, now I get a stable voltage into the regulator at all times. $\endgroup$– PeteCommented Jul 25, 2019 at 1:56