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BERDPhone / BERDOS

A mobile phone operating system built on top of the Raspberry Pi Pico.
GNU General Public License v3.0
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Need to determine battery to use for phone #7

Open BjornTheProgrammer opened 2 years ago

BjornTheProgrammer commented 2 years ago

The battery ideally should have over 2-hour life when powering Raspberry Pi Pico W, microphone, cellular chip, and ILI9488 screen. Also needs a charge controller, and a constant 5V output

BjornTheProgrammer commented 2 years ago

prefer use of usb c

BjornTheProgrammer commented 2 years ago

Scrap the usb c, it is a better and simpler idea to continue use of the micro usb on the pico to allow for data transmission and charging. An all in one of sorts.

Here is a product I found which directly plugs in to the raspberry pi pico and provides charging to a LiPo or LiIon battery. I believe it would be best to use a LiIon battery.

evelynhigbee commented 2 years ago

https://www.waveshare.com/pico-ups-b.htm This one I found is 5V and gives charge to a LiPo battery. It also is a UPS

BjornTheProgrammer commented 2 years ago

This one actually looks really good, just wondering if there is a version without the headers, particularly without the female pin headers. Cuz we need to fit this within a pretty tight space. But I really like the fact it has a power switch, that it communicates the battery life via I2C, and has protection circuitry. One potential issue I notice is that this can't output 5V, maybe we should just institute a 3.3V rating for all the hardware we use.

What do you think?

BjornTheProgrammer commented 2 years ago

Current consumption by Raspberry Pi Pico

Screen Shot 2022-09-20 at 12 57 06 PM

The non-40 pin ILI9488 has a 90ma draw

The cellular module NL-SW-LTE-TG1WWG has the following current draw.

Screen Shot 2022-09-20 at 1 10 45 PM

Here is a 6 amp battery MIKROE-4475