BTC Chimera Mk.III-NB FET for v2 Gearbox (Non-Bluetooth)


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Products Description

Advanced Technology

  • Can handle power surges up to 9000 watts and even run on car batteries.
  • Fully computerized with hi-speed dual ARM Cortex-M0 and PIC18F26K22 microprocessors.
  • Multiple internal layers of heavy copper traces for greater current capacity.
  • Short circuit detection and voltage spike suppression circuits to protect the controller.
  • Smart thermal management reduces heat buildup during sustained firing on certain settings.

MOSFET Trigger

  • Eliminates damaging electrical arcing of the trigger switch contacts.
  • Lower resistance compared to mechanical switching, increasing motor current.
  • Driven by a IRLS3034-7PPBF, the world's most powerful D2PAK-style MOSFET.

Dynamic Braking

  • Eliminates the motor spin-down time to prevent the piston from over-traveling.
  • Assists in keeping the piston properly reset to reduce stress on the gearbox.
  • Prevents double firing on semi-fire in extremely high RoF setups.
  • Also driven by the powerful IRLS3034-7PPBF MOSFET.

Cycle Completion

  • Gearbox always completes the last cycle regardless of when the trigger is released.
  • Assists in keeping the piston properly reset to reduce stress on the gearbox.
  • The motor will always have the smoothest and most consistent startup.
  • Allows the anti-reversal latch to be removed.

Configurable Triple Fire Select

  • All three fire select positions can be individually configured, for a total of 729 (9x9x9) possible configs.
  • Available options for each selector position:
    • Safe
    • Semi fire
    • Auto fire
    • Burst [non-interruptible]
    • Burst [interruptible]
    • Burst/Auto hybrid [burst non-interruptible]
    • Burst/Auto hybrid [burst interruptible]
    • Semi/Auto hybrid
    • Semi/Auto ramping
  • Non-interrupt burst completes a burst even if the trigger is released, whereas interruptable stops mid-burst.
  • Burst modes can be programmed to fire 2 - 10 shots per burst. Each selector can have different burst amounts.
  • "Burst/Auto hybrid" fires in burst and switches to full auto if the trigger remains held down.
  • Hybrid modes can be programmed to have no transition delay or a 0.2s - 1s delay.
  • "Semi/Auto ramping" fires in semi and switches to full auto if the trigger is rapidly tapped.

Hardware Semi-Only Lock

  • Can only be enabled/disabled by using a soldering iron to remove/bridge a solder jumper.
  • Conforms to semi-only laws that forbid AEGs with readily accessible means of bypassing semi-only.

Realistic RoF Control

  • Both fire select positions can be individually configured with a different RoF.
  • Every cycle runs at full speed and pauses between each shot to reduce the RoF.
  • Provides the most realistic feel and sound compared to any other forms of RoF reduction.

Adjustable Precocking

  • Precocking stops the piston in a compressed state so the next shot is near-instantaneous.
  • The precocking is fully adjustable and thus also compatible with short-stroked pistons.
  • Offers improved realism and trigger response for sniper or low RoF builds.

Adjustable Firing Interval

  • After a semi or burst fire, ignores trigger inputs for a certain amount of time. Programmable up to 1s.
  • Helps restrict rapid firing in specialized builds, such as limiting a sniper build to firing one shot per second.
  • Lower intervals can also help prevent accidental "bump firing" on semi when using a feather trigger.

LiPo / LiFePO4 Monitoring

  • Monitors LiPo and LiFePO4 batteries to cutoff power before overdischarge occurs.
  • Simply set the number of cells and the controller will use the proper cutoff voltage.

Programmable Digital Fuse

  • Sensor-based current monitoring negates the need for a physical fuse.
  • Cutoff threshold fully adjustable to help protect low-output batteries from over-current damage.

Gearbox Reliability

  • Eliminates the trigger jam normally caused by the cutoff lever stopping at a certain position.
  • The cutoff lever mechanism is no longer needed, greatly reducing the chances of semi-fire related issues.
  • The anti-reversal latch can also be removed to make gearbox reassembly much easier.
Electrical Ratings

Supply Voltage

Motor Current60240A

FET Resistance

Board Size1.90.60.5inch

Gauge & TypeLength
Battery Wires16AWG Teflon(PTFE)16inch
Motor Wires16AWG Ecowire(mPPE)20inch
Data Wires28AWG Ribbon16inch

Included Items
  • Chimera Mk.III-NB
  • Trigger Board Mk.III (V2 Gearbox)
  • Data Cables (1x spare cable included)
  • Motor Wiring (16AWG mPPE/Ecowire)
  • Deans Wiring (16AWG mPPE/Ecowire)
  • Tamiya Wiring (16AWG mPPE/Ecowire)
  • Installation Manual
  • Programming Guide

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