sensorsiot/superpower

Here you should find the best power supplies for your low-power projects

SuperPower

Here you should find the best power supplies for your low-power projects. Because of different requirements for an Raspberry Pi and micro-controllers like the ESP32 we split the project into two boards, one for the Raspberry Pi (SuperPower-Rpi) and one for micro-controllers (SuperPower-uC) with low power.

SuperPower-Rpi for Raspberry Pi

SuperPower-uC for micro-controllers and low-power devices

Licence

All hardware designs and products you can find in this repository is licensed under CERN Open Hardware Licence Version 2 - Weakly Reciprocal

Relevant links

Discord Channel

Google Drive Project Files

GitHub Project

superpower's Issues

Attiny only

Example with attiny only?

How about this for "SuperPower"?

Adafruit just released a Universal USB / DC / Solar Lithium Ion/Polymer charger
Looks to me like it checking a lot of the right boxes, but I'm not an expert.
https://www.adafruit.com/product/4755

What is the status of this project in May 2022 ?

smart action on "Power Returns" ...

On "Power Loss" we have a Point where the "System" executes "poweroff" for a save shut down, every USV can do this.

Problems exists in the "Power returns" situation, nobody seems to care for this moment. The "System" should NOT start immediatly, only if there ist enough Power in the Accu to do a full "Cold Boot" PLUS a full "Shut down".

In many wrong implemented USVs the "System" is powered up with the return of the Power. But: If Power goes away (again) after say - 4 seconds - we have a incomplete Boot in the happy case, worst case is a Powerfail while running.
"SuperPower" should have selfmanaged Parameter "Systemstart if accu voltage > n V" where you can ensure that there is enough Power to do at least the "boot" and the "shut down".
Users should know this: The USV is OK if the System does not start if Power is plugged in - load the accu to say 10% is FIRST ORDER.

NCP380HMU21AATBG (replace)

Hi, RPI shcematic in Pi-Output-Protection.sch has NCP380HMU21AATBG, and it is max 2.1A. (Current Limit:♦User adjustable from 500 mA to 2.1 A from dataasheet )
but I use Rasp4( with display 7 inch) and other - it need about 3A
Can I remake your schematic and replace NCP380HMU21AATBG to NX5P3090UKZ (3.3A)for example or others????????

In layout.md there are no graphics

In e.g. https://github.com/SensorsIot/SuperPower/blob/master/SuperPower-uC/original/layout.md the included graphics do not exist. There is no build folder existing for "SuperPower-uC"

Sources for MCUs (STM and ATtiny)

Hi,
where i can find sources for MCUs (STM and ATtiny) ?
Thanks in advance

Nothing is visable

Mabye I am just blind.

Consider using super capacitors instead of/additionaly to rechargable batteries.

Super capacitors are a great alternative to batteries. They have very low discharge rate and are more efficient than batteries.

As possible use case I could see solar powered enviromental sensor stations running on ESP32 in low power mode and doing one measurement every two hours. Once daily (around lunch time) transmitting the data through LoRa to a central server.

I'd be interested participating in such project.

uC lowcost variant: 5V Sensor Regulator - Feedback Voltage Divider correct Resistance values?

Just checking your designs I came accross this part:

According to the datasheet I would expect the regulator to return 5.5V instead of 5V with the two resistor values
(https://datasheet.lcsc.com/lcsc/1810182113_Feeling-Tech-FP6291LR-G1_C18701.pdf)

180/22+1*0,6 = 5,5?

Am I right here?
And if so: Why not 5V with 12k and 88k as suggested in the datasheet?

Please forgive me my ignorance - I am a non-engineer-noob-hobbyist trying to design my first PCB :)