[Dprglist] For your next robot - handy dc-dc converters - 3S LiPo to RPi

deltagraph at aol.com deltagraph at aol.com
Wed Feb 6 05:02:05 PST 2019

Hey Carl/All,
Looks nice, but would be nice to have auto disconnect of converter on low voltage -- of course that can be addressed separately, up line at the input of the dc-dc converter.

Voltage monitoring by MCU (with suitable voltage divider)  or display with one of those $1 LED display modules is handy, just thinking more about accidental leaving converter/load connected to battery.
Maybe someone can shed some light on how many li-po packs have auto low-voltage shutoff these days.
At first I was thinking about this converter being used with a 3 cell pack, wonder if it would work with a 2 cell pack?If so, at least the pi would die before the battery. You still would need to disconnect battery, but at least brain death would precede battery death.


-----Original Message-----
From: Carl Ott via DPRGlist <dprglist at lists.dprg.org>
To: DPRG D-List <dprglist at dprg.org>
Sent: Tue, Feb 5, 2019 8:07 pm
Subject: [Dprglist] For your next robot - handy dc-dc converters - 3S LiPo to RPi

Found these - should come in handy powering Raspberry Pi from a 3S LiPo pack.  Haven't powered them up yet - but the specs look good
this one is a little smaller, with just Micro-USB out


this one has both a micro-USB and a USB female:
it's also branded DROKDROK sells a ton of handy modules like this - dc-dc converters of all sizes, I/O, control & display options. I've used them a bunch and haven't been disappointed yet.
- Carl
DPRGlist mailing list
DPRGlist at lists.dprg.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20190206/757a7084/attachment.html>

More information about the DPRGlist mailing list