Nerf Stockade / Barricade Brushless Upgrade

Stock motors in a Nerf Stockade are crap. But you can now upgrade them to a Brushless setup. This will also work in a Nerf Barricade.

Performance isn't measured, but seat of pants is in the 120+ fps range.

Shopping List:
2 x Turnigy Viking 1308 4100kv motors: One CW and one CCW
https://hobbyking.com/en_us/multistar-viking-brushless-outrunner-drone-racing-motor-1308-4100kv-cw.html
https://hobbyking.com/en_us/multistar-viking-brushless-outrunner-drone-racing-motor-1308-4100kv-ccw.html

2 x Brushless ESC of 20a or more. I prefer BLHeli and have the Turnigy BLHeli_s 30a units installed.
30a - https://hobbyking.com/en_us/blheli-s-30a.html
20a - https://hobbyking.com/en_us/blheli-s-20a.html

1 x BEC module
https://www.aliexpress.com/item/Receiver-Power-Supply-5V-3A-Brushless-ESC-External-Type-BEC-UBEC-Support-2-6S/32882504953.html

1 x Arduino Nano or Pro Micro
https://www.aliexpress.com/item/New-Pro-Micro-for-arduino-ATmega32U4-5V-16MHz-Module-with-2-row-pin-header-For-Leonardo/32768308647.html

Please be aware with the Pro Micro, you must ensure you select the right CPU clock frequency and voltage in Arduino. The default is 3v3 / 8mhz instead of 5v / 16mhz. You will soft-brick your Arduino if you get it wrong. If you aren't sure what this means, get the Nano instead. Despite the advantages of the Pro Micro over the Nano, this is the real Achilles heel - a moment's inattention will give you a bad day.

Printing Info
Flywheels need to be printed at 80% infill or higher. If you are using less than 100%, please select 3 walls and use a 3d infill pattern. No supports required. I use Polymax for flywheels as it's nearly indestructible.

Cage needs to be printed at 100% infill.Supports are required. I used 40% support density as the screw posts are absolutely critical to get right. I use ESun PLA+ for my cages.

Installation Process
Screw the motors into the cage using the included hex bolts.

I have videos on the details of this particular build, but I have assumed that you have a fairly basic level of knowledge on brushless setups. There are plenty of videos on brushless nerf builds - especially based on Ultrasonic2's Ultra Stryfe. The process is fundamentally the same.

My ESC's are tuned in the following way:
- Timing = Medium High
- Startup Power = 50%
Everything it more or less default.

Wiring
Firmware is now uploaded.

• Rev trigger connects to Pin 4. The side of the switch connects to Ground
• Speed Pot center pin connects to Pin A2. One side of the Speed Pot connects to 5v from the BEC, the other connects to Ground
• ESC A connects to Pin 10
• ESC B connects to Pin 9 (You can connect both ESC's to the same pin, but it will be a challenge to fit a servo split adapter in the shell). The other side connects to Ground. Typically, in an ESC, the light colour wire is the signal, and the dark colour one is ground.

Video Info
Pt1 - Cage Prototype https://youtu.be/zEPXnI8zdmo
Pt2 - Flywheel Prototype https://youtu.be/tHXrsoOTR3A
Pt3 - Testing the Motors https://youtu.be/784dQKMJmzU
Pt4 - Firing Demo https://youtu.be/nR3vyXXYJxQ
Pt5 - Internals and Build Info https://youtu.be/ERtBob2u2jU

Shoutouts
Shoutout to Ultrasonic2 as I cut my teeth building a number of brushless setups based on his files. That experience allows me to develop this.

License
Absolutely no commercial use of these models, firmware, circuit diagrams, etc are allowed.

My exception is when you pay a general purpose print lab / service (such as 3dHubs) to print models for your own personal use.

If you have anything else in mind, please contact me.

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