The Nintendo Labo RC Toy-Con is simple, but a lot of fun to play with. Let's make it even better with motion-triggered lights courtesy of Circuit Playground Express.
This modification only uses a little bit of double-sided tape to keep the battery secure, so it's easily reversible if you decide to remove it or make changes.
What You'll Need
The first thing we need to do is install the project code. This code will use the Circuit Playground Express's built-in accelerometer to sense vibration and then light up the built-in Neopixel LEDs.
Upload the Code
Connect the Circuit Playground Express to your computer with a micro USB cable. You should see a drive named "CIRCUITPY" appear on your computer.
You'll need to have the Neopixel library installed on your Circuit Playground Express in order to run this project's CircuitPython code. Follow the steps on this page to install the CircuitPython library bundle.
Copy the following code, paste it into a plain text file or code editor such as Mu. Save the file as "code.py" to the CIRCUITPY drive.
from adafruit_circuitplayground.express import cpx
pixels = neopixel.NeoPixel(board.NEOPIXEL, 10, brightness=0.1, auto_write=True)
x, y, z = cpx.acceleration # read acceleromter
r, g, b = 0, 0, 0
if abs(x) > 4.0:
r = 255
if abs(y) > 2.0:
g = 255
if z > -6.0 or z < -12.0:
b = 255
pixels.fill((r, g, b))
After the file saves, your Circuit Playground Express should reboot and start running the action light code.
To make sure everything is working, disconnect the Circuit Playground Express from your computer and connect the LiPo battery.
Try shaking the Circuit Playground around a bit. If it flashes different colors - the code is working!
Mounting the Circuit playground and Battery is easy. We'll use tape to mount the battery, and the Circuit Playground will be held in by the RC Car's cardboard tabs.
Mount the Circuit Playground Express
Turn the RC Car upside down and slide the edges of the Circuit Playground Express under two large cardboard tabs. Keep the USB jack pointed toward the car's 'antenna' as seen in the photo above.
Mount the Battery
Apply a small piece of double-sided tape to the battery and press it into place at the front edge of the car's underside.
Connect the battery to the Circuit Playground and turn the car right side up again. That's it - installation is complete :)
Install the Joy-Cons on the RC Car and boot up your Switch. Start up the Labo Variety Pack cartridge, enter RC Car Play mode, and take your new tricked-out ride for a test drive …
When you're done using the car, don't forget to disconnect the battery from the Circuit Playground. This will help preserve battery life. Have fun & drive safe :)