EXOSPHERE /// Paintball ergo brushless beast

DISCLAIMER 8/25/26: I have been informed that recent batches of plus motors don't play well with 6s. Unless you have older plus motors with the plus shaped bases instead of the square bases, I do not suggest running this on 6s.

This is Exosphere, a paintball ergo cutting edge brushless nerf flywheel blaster. It's small, has a stupid fire rate and retains all of the other features from Stratosphere (this was actually the original, I just decided to make an accessible brushed version which happened first). It's designed around the Kelly Industries plus motors and Dettlaff controller, and supports up to 6s voltage. It's capable of close to 200fps, although this is adjustable, and a fire rate of over 40 darts per second should you desire it. The time from pulling the trigger to the dart going through the wheels is under 150ms. If you like dart spam, this is for you.

Features:
- Optional main power switch
- Select fire solenoid pusher
- Adjustable fire rate
- Multiple PCAR options
- Red dot mount underneath the picatinny rail
- Adjustable mag release to act like a normal release or a detent with a drop lever
- Adjustable fps up to 190fps
- Super low spinup time using closed loop flywheel control
- Insane fire rate due to the short stroked solenoid
- 6s voltage capable
- Adjustable, extremely clicky trigger

The battery box can be comfortably used as a support on the side or bottom of your forearm, or as a stock. It has an internal space of approximately 81x57x115mm, however the corners are cut off by about 10mm, so you'll really want something with a max size of 70x45x115mm.

If you have any questions, want help with a build, have suggestions or feedback, just want to hear more about the blaster, or anything else, please message me on Discord @chickenmaster99!

Various build notes:
- This blaster supports Gonk geometry PCARs, which improve accuracy quite a bit. The files here only have 3 line and 6 line versions, but any Gonk compatible PCAR should fit.
- Being a brushless build, a lot of stuff here is up to the user. I've provided the code that I prefer to use, which uses 2 of the 3 switches on the back of the blaster. On boot up, the first switch decides fps (130, 150, 190) and the second switch decides what the middle firing mode will be (burst or binary). Once the blaster has booted up, the first switch acts as a 3 position fire selector (semi, burst/binary, auto), and the second switch adjusts the fire rate (only affects burst and auto).
- A good bit of the Stratosphere build guide applies to this. If you have a good idea of what you're doing when it comes to brushless, everything not included in that guide should be decently self explanatory (but also dm me if you need help!)
- This blaster wasn't really designed with a release in mind, so the parts are a bit less polished. You will need supports in quite a few places. I'd consider this a pretty difficult build given the tight tolerances and packed wiring areas.
- You will need vibratite for the motor screws and superglue for the hex standoff.
- The values in the code are calibrated for 6s. If you are using 3s or 4s you will need to change the solenoid settings. Replace the src folder in Dettlaff's code base with the one included in this blaster's files.
- All of the parts have been pre-oriented for printing. Print the motor mounting plate solid and using a high temp filament (abs or better). For the inlays, use the contour and hole compensation to make them fit snugly, and glue them in. I found 0.15mm for both to work well.
- The frame is the weak point, and the most likely thing to break if the blaster is dropped. I suggest printing it with more walls than usual.

The BOM can be found here. There are several parts that you MUST USE BUTTON HEAD SCREWS FOR! SOCKET HEADS WILL NOT FIT!

Wiring diagram coming soon-

Special thanks/credit to:
- Kelly Industries, for lots of help with the electronics and code development
- Everyone listed in Stratosphere description

Mrow mrrp meow :3 :3 :3