Phantasm - Blaster brushless chạy bằng bánh đà cực mạnh

Phantasm is a brushless flywheeler meant for competitive play. I wasn't happy with the available options at the time, so I made this. UNO comp teams used them to good effect during NSNW 5, MFT 2025, and BPOC 2025 (2nd place 3 years in a row btw)

This is NOT an easy build for people who do not know what they are doing. This build requires a well tuned printer and varying materials (at least PETG). The build should be relatively straightforward with the documentation I have provided. Please don't contact me to ask questions that can be answered with a quick Google search or by reading the documentation.

Features from Spirit:

• Closed loop control-the blaster will only fire when both wheels are spinning the correct speed for maximum consistency and lowest spinup time.
• Adjustable muzzle velocity from 0-225 fps. Currently, there are three pre-configured profiles for 130, 160, and 200 fps (with good darts), and a tournament mode.
• Configurable settings menu-FPS, Burst count, full auto and burst rates of fire, spin down time, battery cutoff, and fire modes are all settings that can be changed.
• Quick change muzzle device- BCARS/PCARS simply thread into the flywheel cage. I recommend the PCAR for general use.

Phantasm-specific features:

• Two variants-Phantasm, which resembles an MP5k, and Phanta, which is minimized as much as possible.
• Buildable without Flyshot escs or Plus motors-I have edited Will's GNK-200 Manatee code to work with any esc that can use PWM. 4in1 ESCs will probably not fit though. M5 shaft motor such as Flash Hobby Arthurs or SunFun 2207 2500kv should work fine.
• Highest rate of fire out of all the Hycon designs- Phantasm maxes out at 20 darts per second (could probably go higher on PWM or with a better battery)
• Flywheel idling mode in any profile, simply hold down the rev trigger when booting up.
• Dual stage trigger from GNK-200-Half pull to rev and full pull to fire.
• Battery in grip-Fits SBF/Momentum batteries.
• 3 position switch for select fire with assignable fire modes-Safe, semi, auto, reverse, burst, binary, devotion, reverse burst, fast full auto, and dual (half pull to fire in semi, full pull to fire full auto, like the AUG's progressive trigger).
• Upgraded Spirit firmware-Settings are saved per profile, and the screen readouts have been improved.
• Universal magwell-Takes pretty much any straight half dart magazine. Even katanas. Has a dual magazine release, with ambidextrous buttons as well as a paddle. Phanta has an optional magwell flare piece that replaces the paddle. All mags should gravity drop (or you could flick them out 😎).
• Detachable and foldable stock. (If you use your own folding stock the wheel bulges might prevent it from folding fully)
• The core is able to be transplanted into a different shell without desoldering.
• HK Slap 😎 - You can put the blaster in safe mode by locking back the charging handle and disengage the safety by slapping it.

Notes:

• This should go without saying, but please wear proper eye protection when playing, and don't print this in dark/realistic colors. I also recommend printing the muzzle in blaze orange to indicate that this blaster is a toy.
• I am aware of the difficulty of sourcing certain hardware this was designed for, there are alternative parts that should still be available. However, they might not be as good.
• If you are planning on using M5 shaft motors, I recommend cutting the top part of the shaft, but it's not necessary.
• In theory you should be able to squeeze over 200 fps out of these wheels, but I do not recommend increasing the throttle over 80% or 1750, as you get a lot more heat, noise, and wear for marginal gains.
• This may not be as refined as other brushless designs because I'm not that experienced in designing things, but they work and I've already built 8 of these and we trust them enough to use them in tournaments.
• Parts are not oriented for printing-Print orientations and where supports are needed should be fairly obvious. Ophidian print settings should work here.
• If you are having trouble flashing the code to the board you might need to comment out the default splash in the SSD1306 library.
• I designed Phantasm around the Helibatics SimonK escs. Please keep in mind that different escs might not fit.
• Because the wheels are closer to the magwell, 3+ jungled mags do not work well here. It will probably feed, but I wouldn't recommend it.
• Cage and flywheels should probably be printed in a temperature-resistant filament (PETG, ABS, ASA, etc.) because the motors can get warm enough to soften PLA. ABS is the best as it's the lightest.
• Go wild with the steps, I want to see what people cook up.

Parts:

Phantasm shares a lot of components with Ophidian/Spirit.

• 1x Arduino Nano OR DPI PCB
• 2x Resistors to make a 16.8V → 5V voltage divider (47K/20K ohm)
• 1x Resistor for MOSFET gate to ground (10k ohm)

The parts above are included in the custom PCB.

• 1x IRLB3034 MOSFET
• 1x 1N5404 (or similar) Rectifier diode
• 1x 1N5357 Zener diode
• 2x Kelly Industries Plus Motors (Plus Mount) OR 2x SunFun 2207 2450kv brushless motors (AliExpress) (Untested in Phantasm, but they should work) OR 2x FLASH HOBBY Arthur 2207.5 2450kv brushless motors
• 8xM3X5 screws for mounting the wheels to Plus Motors
• 8xM3X6 screws for mounting the motors to the cage
• 1x 0.96" 128x64 SSD1306 OLED Display
• 2x 30-40A SimonK ESCs (must be Flyshot compatible) OR 2x 30A+ AM32 ESCs. A 30x30 4in1 like the Kelly Industries ESC will not fit, unfortunately. I use 2 of the NeebRC 40A AM32 Enhanced Version ESCs that can be found on AliExpress in my pwm builds. WARNING: Some people have reported that these do NOT like high kv motors like Plus Motors and will go up in smoke. I have used them with 2450kv/2500kv motors without any issues, but ymmv. A 20x20 4in1 might fit.
• 1x BEC/UBEC/Buck Converter unit, if the ESCs do not include it
• 1+ 4s battery- If it fits in SBF/Momentum it will fit in Phantasm. I use OOD GNB 1300mAh batteries and the DUPU SBF batteries. All other batteries are untested and might not work. I have heard of issues with the Tattu Momentum batteries not being good enough, so it's probably best to avoid them. I am not responsible for damages caused by improperly spec'd batteries. (Please don't put something like a Diana battery in this)
• 1x OOD Neutron solenoid, double sprung - Default spring AND high ROF spring
• 1x KCD1-101 SPST rectangular switch. I use the ones from this listing. Other sources might have issues.
• 1x 12 x 12 x 5mm momentary pushbutton switch
• 2x Subminature microswitch. Should look like this
• 1x 3 position sliding switch. Should look like this
• M3 heat inserts- I use these 
• Various M3 screws, varying lengths of 4,5,6,8,10,12,20,30mm. A variety kit should work. 
• 16ga wire for the main power leads
• A bunch of jumper wires / hookup wire (24ga solid copper wire is best)
• 1x XT60 connector
• 1x M3x6, 7, or 8 thumbscrew
• 4x M2x10 screws-(torque heads preferred)
• 3x click-pen spring for the mag releases and trigger (4mm diameter)
• 6 or 9x F683ZZ flanged bearings (for optional BCAR)
• 6 or 9x M3 x 10mm screws (for optional BCAR)
• Red loctite for securing the wheels/motors
• Heat shrink wrap
• Hot glue gun
• Soldering supplies
• Grease/lube-I use Superlube synthetic grease from OOD

Optional parts:

• 1x Subminature microswitch for the charging handle safety
• 2x M2x10 screws-(torque heads preferred) for charging handle switch
• 2x Machined Spirit wheels - printed ones would work fine. The machined options from Roboman or Kuryaka are meant for Plus Motors only.
• 1x Spring for the folding stock
• 1x Extension spring for charging handle. This spring assortment has springs that work in the stock and charging handle.
• 1x M2x4 screw if printing the split back left cover
• Various M3 screws and a M3 nut for the folding stock-You will need one at least 35mm long for the hinge part.
• For collapsing stock: Worker or SBL2 rod set, a pen spring, 6 more heat inserts, and 6 M3x8 screws.
• M5x30 and M5 nut for any stock option
• M3x30 and M3 nut for sling mount
• QD Sling Swivel for folding stock

Possible features/ideas (probably not happening lol):

• More stock options
• Closed loop AM32-Probably coming soon-ish
• Adjustable trigger group
• Rotary fire selector near the grip like Momentum/SBF
• New fire mode splashes
• Hyperdrive version
• Holster for Phanta
• More battery options-stock, drill battery, remote line, side compartment
• Latch or magnet on folding stock
• Adjustable iron sights
• Angled talon magwell version
• Different wheels/cage
• Different handguards
• UV led in magwell
• Operational briefcase
• Decorative "suppressor"
• Improve build process/optimize parts
• Improve grip ergo
• Protean muzzle device mounting
• Metal plate for motor mounting
• More muzzle options-SCAR/twisted PCARs/modular BCAR
• More firing modes

Updates:

9/30/2025:

• Fixed geometry of the SunFun cage. FOR 2450/2500kv MOTORS ONLY! 2750kv is different.
• SunFun wheels now have indents that interface with the bell
• Holes in side of cage removed
• Added unchamfered/unfilleted picatinny rails to the step
• Added picatinny sling mount to Phanta for some additional color
• Optional magwell flare piece on Phanta can now also fit the paddle release
• New retractable stock option added: uses SBL2 or these Worker rods
• Various tolerances adjusted
• 3mf files added for coloring
• Suggested print orientations/support images added to build guide
• Basic Assembly Instructions updated
• Increased number of darts able to be fired on one trigger pull from 60 to 100 in the pwm code
• Reduced firing delay slightly in non-automatic/burst modes in pwm code

Acknowledgements/Credits:

• Flywheel geometry, code, and components from the Spirit
• SunFun motor geometry cage/wheels from Ophidian
• Trigger group from the GNK-200
• Code/Mag stand from GNK-200 Manatee edition
• Folding stock hinge from PP MCXish Folding Brace
• Fixed stock from NERF STRYFE UMP KIT
• Adjustable stock geometry from Strider Collapsing Stock
• Phanta sling mount from Sling Mount

Thanks to all the hobby creators who keep their work open source, without remix culture things like this would not exist.