Apologies for the vague-ery, and basic Q's below. I will do my best to clarify and research further where necessary.
tldr; can I "safely" replace a 6v pack (4 AAs) with a 8.4v pack (2s lipo) in my toy? If I let the smoke out of something, will it be a cheap something I can replace myself.
[Solved]: yes I can. 2s is fine for these toys.
I'm using arduino nanos as general helpers in a few Nerf projects. Things like controlling motors, adding displays, adding addressable lighting etc.
I've now got my grubby paws on some Nerf laser ops blasters.
The laser ops blasters work like most other laser tag toys, emitting / collecting IR (they have already been decoded on this very forum). They also have BT functionality to connect to an app.
There is very little to the electronics save for the collecter, emitter, a BT module and some kind of uC. That said the bigger, higher voltage, toy has two 130 motors to power some gimmicks.
What I want to do
The bigger blaster, called a DeltaPoint, is powered by 6AAs (9v). I intend to run it off an RC car 2s lipo pack (8.4v) because all my AAs seem to be in my daughter's four furbies. I'm sure it'll do just fine.
The smaller one, called a AlphaPoint, is powered by 4 AAs (6v). Although I see 4 AAs replaced with 2s packs in other hobbies (in RC TXs) I am slightly nervous about the 2.4v increase.
Research so far
Internals pics show what seems to be a very similar, but not identical PCBs.
- Is it safe to assume the visually "similar" design of the PCBs means they will run at similar (max) voltages?
- Should I just stop wasting your time and mine, and stick a 2s pack in there to test? - These toys are under £5 each?
- If I blow something up, will it be a cap, or resistor or something that I could replace?