solar power on a Pine64 tablet
#2
(05-20-2017, 02:48 AM)Little_Johnny Wrote: im making a Pine64 tablet with a c4 labs screen case, i want to put a 5v solar panel with a 5v 2A voltage regulator on the back to charge the 3.7V Li ion battery, im thinking about using a usb plug from the voltage regulator to the pine64 board, my questions are is this possible and do i have the voltage and amps correct to charge?

If your voltage is constant, and clean, then yes you may get away with it.  Better would be at least 2.5A (2500ma), @ 5.1v;   and this as long as you're connecting to the pine board's DCIN;  euler bus pin(4  +5v), pin(6  gnd).

The axp803 PMIC controls the charging, along with the ARISC. Don't try to charge your lipo directly with the 5v system!  (you will be sorry, but I spare you)

It might be better to have a 12v SLA system that powers the pine(s) via dc-dc converter;  have your solar system charge the 12v system, and allow the pine to run off the 12v feed via CPT or other dc-dc.  (this is how my setup works)  Be sure to have good filtering between the dc-dc converter and the pine(s), with plenty of decoupling caps. Its important to have the DCIN clean, and constant.
marcushh777    Cool

please join us for a chat @  irc.pine64.xyz:6667   or ssl  irc.pine64.xyz:6697

( I regret that I am not able to respond to personal messages;  let's meet on irc! )
  Reply


Messages In This Thread
solar power on a Pine64 tablet - by Little_Johnny - 05-20-2017, 02:48 AM
RE: solar power on a Pine64 tablet - by MarkHaysHarris777 - 05-20-2017, 01:34 PM
RE: solar power on a Pine64 tablet - by pfeerick - 05-20-2017, 06:48 PM
RE: solar power on a Pine64 tablet - by pfeerick - 05-20-2017, 09:07 PM
RE: solar power on a Pine64 tablet - by pfeerick - 03-19-2018, 03:51 AM
RE: solar power on a Pine64 tablet - by pfeerick - 03-20-2018, 12:01 AM

Possibly Related Threads…
Thread Author Replies Views Last Post
  Which Power Supply Unit for Pine64 A64 DB V1.1 2GB REV B (year 2016)? databaseprogrammer 1 3,009 07-03-2021, 01:29 AM
Last Post: tllim
Lightbulb Alternate Power DC-IN on the Euler Bus also with PI filter for batt operation MarkHaysHarris777 13 25,241 12-19-2020, 09:53 PM
Last Post: evilpete
  Once Again: Power Supply problems I guess (Pine A64+ locking up) marcelser 0 3,479 06-04-2018, 03:11 PM
Last Post: marcelser
  Power supply problems. larsen8989 5 9,184 05-03-2018, 09:01 PM
Last Post: tllim
  Power up HDDs c4tich 3 6,245 03-18-2017, 09:18 AM
Last Post: Luke
  Provide power in via Pi-2 header BenCranston 22 28,882 03-08-2017, 10:38 PM
Last Post: pfeerick
  any danger from using 2 power sources at same time? dkryder 3 6,828 01-20-2017, 10:45 PM
Last Post: MarkHaysHarris777
Lightbulb A Tale of Two Power Supplies - why good is good and better is best MarkHaysHarris777 9 18,089 01-07-2017, 11:59 PM
Last Post: aegrotatio
  First cable for Euler Bus power done! AVL2016 24 32,563 10-05-2016, 06:43 AM
Last Post: Ghost
  Fuse in the AC power line? cr2016 3 6,691 10-02-2016, 04:35 AM
Last Post: pfeerick

Forum Jump:


Users browsing this thread: 1 Guest(s)