New Person - Need Help Making Raspberry Pi Zero W Portable

Hi.

The second link is only a charger.

Lithium Polymer Batteries have a typical output voltage of 3.7V

***this information may be incorrect but the general idea is correct***

You'll need a booster to bring that up to 5V.

https://www.adafruit.com/product/2465

Perhaps?

That's my go-to suggestion, since it comes with battery charging, USB 5V out, etc.

The Pi0 and Pi0W are essentially the same thing. The only thing is that one has wifi, one does not, and some parts aren't in same place(but camera, SD, GPIO, power/data, hdmi) are all the same.

2 hours?

I see here the pi 0 uses 120mA at idle and 170 watching 1080 HD video.

With screen, I'd assume, perhaps, 130mA? An OLED would be suitable.

(Monochrome, I mean)

The battery indicated has 2000mA

I'd suppose 300mA then an additional 50mA(this is pure guesswork) for bluetooth.

it should, in theory work.

You can also get 1A or so with that powerboost.

let me know how the project goes.

Hi Fillip

I have not used the shim but the Pimoroni site gives a bit more information and in the comments several people report using it with the Zero W which draws less power than the Pi 3 which is also mentioned. https://shop.pimoroni.com/products/lipo-shim#show-review

The TPS61232 in the shim boosts to 5v so that is all you need.

Small OLED screens require very little power

There are also very low power mics but I’ve not used USB mics or checked their requirements

The 2000 mAH battery may not meet your 2 hour requirement - your average current cannot exceed 1 amp and your battery has to meet it’s full rating, be fully charged, and hold voltage down to the cutoff of the boost converter.
It looks like your choices will get you pretty close or exceed your requirements. Hopefully there is someone here who has actually used the hardware.  Else you might also post on the Pimoroni forums.

Frank

I will stage a test with a Pi Zero and a 4400maH battery. I just put the battery on charge for the evening and tomorrow I will dig through my Pi's to find a Zero I can test with.

I typically use the latest Raspberry OS lite and configure enough to establish a ssh network connection. Do you have any other particulars you would not me to configure on the Zero?

Once the battery is charged and the Pi is ready, I will write a script to log date and time to a file until the device dies. If you don't hear from me ping me for a response.

Hi !

I know I'm late to this discussion, but, from my experience - I have a setup exactly like the one you want - a Raspberry PI Zero W (the W or without the W only means it has wifi integrated (with W) - but will consume more) .

You will be fine with the first two links - The Adafruit Powerboost 1000C (the 500C will also work, but will take longer to charge the battery) and the Lipo Battery.

You can check this project from adafruit. It has the same components you need and almos the same specifications:

https://learn.adafruit.com/raspberry-pi-wearable-time-lapse-camera/overview

your main problem probably will be to find a good ratio battery capacity/battery size for your glasses...

Cheers