3D Printed Fidget Spinners

I got these designs off of a site called http://www.thingiverse.com, where you can design templates and share them with the public, or download someone else’s. If you have a 3D printer, I highly suggest you use this site. I managed to find some designs and press the bearings and/or steel balls into them. Enjoy!

Shark fin spinner- http://www.thingiverse.com/thing:1936727

Triangular spinner-http://www.thingiverse.com/thing:2126470

Steel ball spinner- http://www.thingiverse.com/thing:1821445

Shark fin spinner Triangular spinner Steel ball spinner

Spinner w/ shark "fins" Spinner shaped like a triangle Spinner w/ steel balls for weights

Spinner model
Caps

note: working title

Wiiceiver has been awesome -- it lets people use an inexpensive wireless nunchuck + standard ESC to drive their skateboard. But the internet is running out of nunchucks, and there are some features still missing.

Wiiceiver X is a two-module system, controller ("Chuck") + receiver ("Board"):

  • wireless, ergonomic, rechargeable handheld controller w/ battery status
  • receiver module with battery disconnect, current & voltage measurement, and servo (ESC) output.
  • fully hackable: exposed pins on both units, standard NRF24L01+ transmitters, simple bidirectional communication

Wireless Chuck features:

  • LEDs for board battery status
  • configuration interface for the receiver (same as Wiiceiver's configuration routine)
  • channel bonding & checksumming for managing cross-talk: board <-> chuck will share a provate channel, up to 100 channels available

Receiver / Board features:

  • LEDs for management / troubleshooting
  • channel bonding to a chuck
  • on/off ESC power management & voltage monitoring
  • up to 4 ESC outputs (any can also serve as BEC connector)

FAQ

  1. When will it be available?
    • I don't know, I'm working on it now. Probably $75
  2. How much will it cost?
    • see #1
  3. Can I install it in my own skateboard / go-kart / unicycle project?
    • Sure.

Mommy's golfcart doesn't have a usable fuel gauge (battery level meter), or a clock. I have fixed that.

Dash, clock offdash, clock on

I slapped an Adafruit OLED (same as on my skateboard) onto a Particle Photon. I used a simple voltage divider to split the ~56v battery string down to something measurable, and a 48V relay to turn on/off a lower-voltage (~18V) line to power the voltage regulator.

The Photon awesomely has a very simple battery backup connection (so there's a lithium battery in there too), and the clock awesomely syncs up whenever it finds the cloud.

clock view

The display currently shows a fuel gauge bar, under that it has raw ADC value (debugging), a calculated voltage level, and a symbol showing the device's state of connectivity -- z (sleeping), + (connecting), * (connected). The device doesn't like being disconnected generally, so I detect that state and disconnect manually. It will reconnect on power-up, or if it senses the cart being charged (e.g. in my garage).

The clock display uses the built-in font, has a blinking cursor (currently "off"), and a smaller seconds display (also for debugging).

The code is a little silly, but please This email address is being protected from spambots. You need JavaScript enabled to view it. if you want to try and make one, I'll hook you up.




Tell your device what to do!

Turn the LED on.
Turn the LED off.

1.95x2.00 inch (49.53x50.80 mm) 2 layer board.

A new hardware project: Crazy Volts. Drew and I are working on a fuel gauge for his Crazy Cart. It's based on the ATmega328P + Adafruit's OLED display, and a custom PCB to hold it all together.

The power switch for the cart has 3 leads: ground, battery, and switched to controller. The controller lead is switched and provides the voltage sense, so we just wired the input + power leads together. The display running in the pic above shows our calibration test, and the display itself hasn't been permanently mounted yet.

The design is general enough to be adapted to anything with batteries. In software we'll probably only try to estimate the power characteristics of SLA, but it's just software....

2 layer board of 1.55x2.05 inches (39.47x52.15 mm).

We also considered using a general-purpose ATmega328 breakout (the bduino), or a teensy 3.1 + adapter board to wire up a regulator + OLED display.

I am out of kits and will not restock Wiiceiver due to the lack of good wireless nunchucks available. I am working on Wiiceiver X, a replacement wireless handheld controller & receiver, and can hopefully release specs & instructions in the Spring.

If you have a 1.2.2 Wiiceiver (anything shipped before October 2016), skip to the bottom for a FREE UPGRADE KIT to software 2.0B4. You can also download the latest software and upgrade your own device at your convenience.


Introducing the wiiceiver! A drop-in "plug and play" replacement for a traditional RC receiver, designed for use on an electric skateboard. It has 2 standard 3-pin servo connectors (single ESC, dual ESC, or ESC + BEC) and a port for a Nintendo Wii Nunchuck.

... unfortunately all kits are sold out.

Looking for instructions? click here