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coloradocube / balloonsat

COTS balloonsat mission to test the RPi 4 with a battery UPS, a quad camarray, a GPS module, a RockBLOCK module, and a small number of Qwiic sensors
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Functional battery power system #17

Closed ivogeorg closed 2 years ago

ivogeorg commented 2 years ago

Description

Power a RPI 4 with the EP-0136 UPS PLUS. Load the processor with continuous video capture and storage to SD card. Time the discharge.

Open questions

  1. How can the RPi gracefully power itself down upon UPS low-battery condition?
  2. Can the UPS communicate with the RPi?

Knowledge

  1. EP-0136 on the 52pi wiki.
  2. UPS Plus repo on Github.
ivogeorg commented 2 years ago

Here's the clue: https://wiki.52pi.com/index.php/EP-0136#Automatic_Shutdown_Protection

ivogeorg commented 2 years ago
This is weird: the gold pins on the left have to "plug in" to the header bottoms on the right... UPS RPi

The RPi and UPS communicate over I2C. Two of those pins are SCL and SDA.

They don't fit well and don't make a good enough connection to rely on during a turbulent flight. If we don't rely on them, we need to come up with a connector to them, but I haven't seen female pins that would fit these. Any ideas?

ivogeorg commented 2 years ago

We may be able to live with it: image

dperry29 commented 2 years ago

i feel like with the jackpost screws it is probably ok... but we can do a small spot solder if we want

dperry29 commented 2 years ago

11/4/2021 Update

Battery Type: -Need to decide what battery type we will actually fly -Will run room temp battery discharge comparison bench tests 11/5/21

Power delivery system: -Raspberry Pi UPS, X728 V2.1 to be ordered and (if comes in) tested next week -Will do full evaluation tomorrow on powerboost 1000c (still think we can use this if we setup it up correctly) -possibly continue to troubleshoot EP-0316

dperry29 commented 2 years ago

Sounds like @sschis (seth) got the new battery board running a pi with no crashes. Nice work!

ivogeorg commented 2 years ago

@sschis @dtucker18

Yesterday you guys said the new power pack HAT doesn't measure and report the current like the EP-0136. Couldn't we use the ZIO voltage and current sensor we bought for that? Max current rating is 3.2 A and nominal RPi 4 max current is 3 A. There seems to even be an RPi library for it.

dperry29 commented 2 years ago

Ya that was the plan! try that thing out

Get Outlook for Androidhttps://aka.ms/ghei36

From: Ivo Georgiev @.> Sent: Friday, November 12, 2021 9:44:27 AM To: MSUSAT/balloonsat @.> Cc: Perry, Daniel @.>; Assign @.> Subject: [EXTERNAL] Re: [MSUSAT/balloonsat] Functional battery power system (Issue #17)

NOTICE: This email originated from outside the University. Please exercise caution when replying or opening links and attachments.

@sschishttps://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fsschis&data=04%7C01%7Cdperry29%40msudenver.edu%7Cabb9ff5d38a748d0c8b908d9a5fbb13b%7C03309ca417334af9a73cf18cc841325c%7C1%7C0%7C637723322726151385%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=tm%2BtcoJ6a%2FUma7jYGsVm1Z67aMifl4rZuPEn9svmty8%3D&reserved=0 @dtucker18https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fdtucker18&data=04%7C01%7Cdperry29%40msudenver.edu%7Cabb9ff5d38a748d0c8b908d9a5fbb13b%7C03309ca417334af9a73cf18cc841325c%7C1%7C0%7C637723322726161382%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=I3U8%2FJrwSs2%2BzhuNFs9ivjxkm%2BiUTWfe1o%2FuAm%2Bduek%3D&reserved=0

Yesterday you guys said the new power pack HAT doesn't measure and report the current like the EP-0136. Couldn't we use the ZIO voltage and current sensorhttps://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.smart-prototyping.com%2Fblog%2FZio-Current-and-Voltage-Sensor-Qwiic-Start-Guide&data=04%7C01%7Cdperry29%40msudenver.edu%7Cabb9ff5d38a748d0c8b908d9a5fbb13b%7C03309ca417334af9a73cf18cc841325c%7C1%7C0%7C637723322726171376%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=6PWB9a5KfY2s%2FO4ng3zBsALjgDB%2BB9zaNlAJh1lisV0%3D&reserved=0 we bought for that? Max current rating is 3.2 A and nominal RPi 4 max current is 3 A. There seems to even be an RPi libraryhttps://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.hackster.io%2Fchrisb2%2Fraspberry-pi-ina219-voltage-current-sensor-library-f3bb54&data=04%7C01%7Cdperry29%40msudenver.edu%7Cabb9ff5d38a748d0c8b908d9a5fbb13b%7C03309ca417334af9a73cf18cc841325c%7C1%7C0%7C637723322726181370%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=lt1pre7y0IU5PAZIvRUfzIZcG%2Bz5C%2BVNBZ1wioE0qGQ%3D&reserved=0 for it.

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ivogeorg commented 2 years ago

Update

We are no longer using the 52pi UPS Plus EP-0136. We are using the Geekworm X728.

sschis commented 2 years ago

I suppose we can use it to test the current draw on the bench test and use that as rough assumptions for flight use, but not sure how it would fit into the stack long-term.

dperry29 commented 2 years ago

Update 11/12/2021

INA-219 operational and giving sensor data X728 Powering Rpi 3 via cabling (not in stack)

Next Steps: Physical integration. -Which pins are used/unused on X728 and INA-219 -How will the pins be connected to the flight Rpi -Building custom cable setup *All of this is currently functional but we need to make physically compatible with the rest of the stack setup and "flight-worthy"

sschis commented 2 years ago

option 1: separated stack ribbon cable(female plug) from power board splice out the two 5V pins into current sensor (V+) splice two 5V pins (V-) from current sensor back into ribbon cable ribbon cable into TOP HAT (need a new hat..old one not working? Qwiic PiHat v10) ^^need a 40pin female to long male extender so the ribbon cable can plug into top of stack (regular existing male pins too short to connect hat AND ribbon cable female plug)

parts needed: 40pin ribbon cable: shorturl.at/xFJR7 new PiHat Qwiic v10: https://www.sparkfun.com/products/14459

ivogeorg commented 2 years ago

PSU works fine with 2 batteries for about 1.5 hours at 75% load (stress test) and over 2.5 hours with normal load (~10%). This was tested at lawn demo and will be sufficient for EOSS-319 in Jan 2022.