[Ovmsdev] OVMS v3.3 hardware
leres at xse.com
Tue Sep 7 07:13:39 HKT 2021
On 8/29/21 11:03 PM, Mark Webb-Johnson wrote:
> I now have two prototypes of the 4G modem using SIM7600G R2 chip for
> OVMS v3.
I was comparing the v1.1 and v1.2 modem schematics to see what the
differences are between my sim7600 converted board (v1.1) and the
current production version. It looks like some inductors and related
parts were added to the power supply (and I sort of remember you
describing this back when the v3.2 ovms board came out).
I noticed the pdf files for the v1.2 modems are misnamed in the source tree:
ice 521 % find . -name '*.pdf' | fgrep -i modem
Shouldn't the ones in the v3.2 directory be named *v1.2_20190610.pdf?
Aside from the R8/R9 to R6/R6 and u.fl component swap, are there other
differences between the v1.2 and v1.3 modem boards? (Is it too soon to
add the v3.3 and v1.3 pdfs to the source tree?)
On 8/17/21 12:31 AM, Michael Balzer wrote:
> 2. Any chance to fix the missing HW flow control on the modem UART
(Is this the source of the "W (541151) cellular: UART hw fifo overflow"
I see periodically?)
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