Hi I'm quite new to all of this, I am going to try to be as clear as possibe but excuse me if I'm a bit hard to understand. I need some guidence on how to connect a battery to the Pi, and I had some questions. Also if I am incorrect with anything I wrote please do correct me as I want to know how this works.
I am trying to build a handheld retro emulator (a gameboy of sorts) with a Pi Zero 2 W.
Looking online most people either use NiMH AA batteries (Usually 4) or they use a LiPo battery.
If I use 4 NiMH AA batteries the voltage range would be ~ 5.6-4.8V from when they are fully charged to discharged, to turn this into a steady 5V I thought I should use a step up/down voltage regulator like this one:
https://thepihut.com/products/pololu-5v ... r-s13v30f5
It says it outputs a current of 4-2A, but with an input of around 5V it gives ~ 3A, one of my questions is do you think this is enough? Raspberry Pi say that the zero 2 w needs 2.5A but im guessing it uses less than that most of the time. However, it also needs to be able to power the screen I am using, this is a 3.5inch bw tft lcd monitor which I modded to work with 5V. As far as I can tell the screen uses ~ 2.3W which means it needs ~ 0.46A. I also want to include a small 0.5W speaker and headphone jack so is 3A enough to power the whole system?
The other option is a LiPo battery which I would need a charger for. Many people use this:
https://thepihut.com/products/adafruit- ... b-boost-1a
It says that it outputs 5.2V however I cannot see how many amps it can give (i think i might be misunderstanding how this works).
I also saw this person https://www.youtube.com/watch?v=XCxKST7 ... P&index=15 use this:
https://thepihut.com/products/lipo-amig ... eIQAvD_BwE
but idk how he was meant to know if it works with the Pi because it only says something about powering a 4.2V device, and still doesnt mention how many amps it can give. If someone else understands please help explain.
Lastly I wanted other peoples opinions regarding the NiMH AA batteries vs a LiPo battery.
The main advantages with the LiPo battery is weight, a 2500mAh battery is ~40g, while each AA (2500mAh) NiMH battery is 30g. But the NiMH batteries would theoretically give me 12.5Wh while the LiPo gives me 9.25Wh. I would like my emulator to last at least like 1 hour, I have no idea if this is enough any advice would be appreciated. (:
Thanks for taking the time,
Teo
I am trying to build a handheld retro emulator (a gameboy of sorts) with a Pi Zero 2 W.
Looking online most people either use NiMH AA batteries (Usually 4) or they use a LiPo battery.
If I use 4 NiMH AA batteries the voltage range would be ~ 5.6-4.8V from when they are fully charged to discharged, to turn this into a steady 5V I thought I should use a step up/down voltage regulator like this one:
https://thepihut.com/products/pololu-5v ... r-s13v30f5
It says it outputs a current of 4-2A, but with an input of around 5V it gives ~ 3A, one of my questions is do you think this is enough? Raspberry Pi say that the zero 2 w needs 2.5A but im guessing it uses less than that most of the time. However, it also needs to be able to power the screen I am using, this is a 3.5inch bw tft lcd monitor which I modded to work with 5V. As far as I can tell the screen uses ~ 2.3W which means it needs ~ 0.46A. I also want to include a small 0.5W speaker and headphone jack so is 3A enough to power the whole system?
The other option is a LiPo battery which I would need a charger for. Many people use this:
https://thepihut.com/products/adafruit- ... b-boost-1a
It says that it outputs 5.2V however I cannot see how many amps it can give (i think i might be misunderstanding how this works).
I also saw this person https://www.youtube.com/watch?v=XCxKST7 ... P&index=15 use this:
https://thepihut.com/products/lipo-amig ... eIQAvD_BwE
but idk how he was meant to know if it works with the Pi because it only says something about powering a 4.2V device, and still doesnt mention how many amps it can give. If someone else understands please help explain.
Lastly I wanted other peoples opinions regarding the NiMH AA batteries vs a LiPo battery.
The main advantages with the LiPo battery is weight, a 2500mAh battery is ~40g, while each AA (2500mAh) NiMH battery is 30g. But the NiMH batteries would theoretically give me 12.5Wh while the LiPo gives me 9.25Wh. I would like my emulator to last at least like 1 hour, I have no idea if this is enough any advice would be appreciated. (:
Thanks for taking the time,
Teo
Statistics: Posted by Teo5 — Tue Apr 16, 2024 1:27 am