# Buttermilk Boat with Circuit Playground Express ## Overview This DIY boat project is a great way to dip one's toes into coding.  A one-quart milk carton is the perfect size for a boat that will easily contain all the electronics you want to add while still a convenient size for playing in a bathtub.  This project will take you through the build process and demonstrate how to use MakeCode to control the boat in a variety of ways. ![](https://cdn-learn.adafruit.com/assets/assets/000/072/495/medium800thumb/makecode_IMG_2513.2019-03-08_18_32_47.jpg?1552087987) ## Adafruit Electronics Featured ### Circuit Playground Express [Circuit Playground Express](https://www.adafruit.com/product/3333) **Circuit Playground Express** is the next step towards a perfect introduction to electronics and programming. We've taken the original Circuit Playground Classic and made it even better! Not only did we pack even more sensors in, we also made it even easier to... Out of Stock [Buy Now](https://www.adafruit.com/product/3333) [Related Guides to the Product](https://learn.adafruit.com/products/3333/guides) ![A Black woman's manicured hand holds a round microcontroller with lit up LEDs.](https://cdn-shop.adafruit.com/640x480/3333-05.jpg) Featured ### Micro servo [Micro servo](https://www.adafruit.com/product/169) Tiny little servo can rotate approximately 180 degrees (90 in each direction) and works just like the standard kinds you're used to but _smaller_. You can use any servo code, hardware, or library to control these servos. Good for beginners who want to make stuff move without... In Stock [Buy Now](https://www.adafruit.com/product/169) [Related Guides to the Product](https://learn.adafruit.com/products/169/guides) ![Micro servo with three pin cable](https://cdn-shop.adafruit.com/640x480/169-06.jpg) Featured ### Small Alligator Clip to Male Jumper Wire Bundle - 6 Pieces [Small Alligator Clip to Male Jumper Wire Bundle - 6 Pieces](https://www.adafruit.com/product/3448) When working with unusual non-header-friendly surfaces, these handy cables will be your best friends! No longer will you have long, cumbersome strands of alligator clips. These compact jumper cables have a premium male header on one end and a grippy mini alligator clip on the... In Stock [Buy Now](https://www.adafruit.com/product/3448) [Related Guides to the Product](https://learn.adafruit.com/products/3448/guides) ![Group of Small Alligator Clip to Male Jumper Wires](https://cdn-shop.adafruit.com/640x480/3448-00.jpg) Featured ### JST 2-pin Extension Cable with On/Off Switch - JST PH2 [JST 2-pin Extension Cable with On/Off Switch - JST PH2](https://www.adafruit.com/product/3064) By popular request - we now have a way you can turn on-and-off Lithium Polymer batteries without unplugging them. This **PH2 Female/Male JST 2-pin Extension Cable ** comes with an in-line **Switch** - click once to turn on, click again to turn off.... Out of Stock [Buy Now](https://www.adafruit.com/product/3064) [Related Guides to the Product](https://learn.adafruit.com/products/3064/guides) ![Top view shot of JST 2-pin Extension Cable with On/Off Switch.](https://cdn-shop.adafruit.com/640x480/3064-02.jpg) Featured ### Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh [Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh](https://www.adafruit.com/product/3898) Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This battery has a capacity of **400mAh** for a total of about 1.9 Wh. If you need a larger (or smaller!)... In Stock [Buy Now](https://www.adafruit.com/product/3898) [Related Guides to the Product](https://learn.adafruit.com/products/3898/guides) ![Slim Lithium Ion Polymer Battery 3.7v 400mAh with JST 2-PH connector and short cable](https://cdn-shop.adafruit.com/640x480/3898-05.jpg) Featured ### 3 x AAA Battery Holder with On/Off Switch and 2-Pin JST [3 x AAA Battery Holder with On/Off Switch and 2-Pin JST](https://www.adafruit.com/product/727) This battery holder connects 3 AAA batteries together in series for powering all kinds of projects. We spec'd these out because the box is slim, and 3 AAA's add up to about 3.3-4.5V, a very similar range to Lithium Ion/polymer (Li-Ion) batteries and have an on-off switch. That makes... In Stock [Buy Now](https://www.adafruit.com/product/727) [Related Guides to the Product](https://learn.adafruit.com/products/727/guides) ![Front angled shot of 3 x AAA battery holder with on-off switch and 2-pin JST PH connector.](https://cdn-shop.adafruit.com/640x480/727-07.jpg) Featured ### Alkaline AAA batteries - 3 pack [Alkaline AAA batteries - 3 pack](https://www.adafruit.com/product/3520) Battery power for your portable project! These batteries are good quality at a good price, and work fantastic with any of the kits or projects in the shop that use AAA's. This is a pack of **3 AAA batteries**. These batteries are Alkaline (MnO2) chemistry, with a... Out of Stock [Buy Now](https://www.adafruit.com/product/3520) [Related Guides to the Product](https://learn.adafruit.com/products/3520/guides) ![Angled shot of 3 PKcell AAA batteries. ](https://cdn-shop.adafruit.com/640x480/3520-00.jpg) ## Other Materials For this project you will need: - Empty quart-sized milk carton - Scissors and/or box cutter - [Double sided tape](https://www.amazon.com/dp/B003W0R4PE/ref=cm_sw_r_tw_dp_U_x_Y2SGBb4DV10TX) - Scrap corrugated cardboard - Clear masking tape - [Next Page](https://learn.adafruit.com/boat-with-circuit-playground-express/the-circuit.md) ## Guide Products ### Circuit Playground Express [Circuit Playground Express](https://www.adafruit.com/product/3333) **Circuit Playground Express** is the next step towards a perfect introduction to electronics and programming. We've taken the original Circuit Playground Classic and made it even better! Not only did we pack even more sensors in, we also made it even easier to... Out of Stock [Buy Now](https://www.adafruit.com/product/3333) [Related Guides to the Product](https://learn.adafruit.com/products/3333/guides) ### Micro servo [Micro servo](https://www.adafruit.com/product/169) Tiny little servo can rotate approximately 180 degrees (90 in each direction) and works just like the standard kinds you're used to but _smaller_. You can use any servo code, hardware, or library to control these servos. Good for beginners who want to make stuff move without... In Stock [Buy Now](https://www.adafruit.com/product/169) [Related Guides to the Product](https://learn.adafruit.com/products/169/guides) ### Small Alligator Clip to Male Jumper Wire Bundle - 6 Pieces [Small Alligator Clip to Male Jumper Wire Bundle - 6 Pieces](https://www.adafruit.com/product/3448) When working with unusual non-header-friendly surfaces, these handy cables will be your best friends! No longer will you have long, cumbersome strands of alligator clips. These compact jumper cables have a premium male header on one end and a grippy mini alligator clip on the... In Stock [Buy Now](https://www.adafruit.com/product/3448) [Related Guides to the Product](https://learn.adafruit.com/products/3448/guides) ### JST 2-pin Extension Cable with On/Off Switch - JST PH2 [JST 2-pin Extension Cable with On/Off Switch - JST PH2](https://www.adafruit.com/product/3064) By popular request - we now have a way you can turn on-and-off Lithium Polymer batteries without unplugging them. This **PH2 Female/Male JST 2-pin Extension Cable ** comes with an in-line **Switch** - click once to turn on, click again to turn off.... Out of Stock [Buy Now](https://www.adafruit.com/product/3064) [Related Guides to the Product](https://learn.adafruit.com/products/3064/guides) ### Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh [Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh](https://www.adafruit.com/product/3898) Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This battery has a capacity of **400mAh** for a total of about 1.9 Wh. If you need a larger (or smaller!)... In Stock [Buy Now](https://www.adafruit.com/product/3898) [Related Guides to the Product](https://learn.adafruit.com/products/3898/guides) ### 3 x AAA Battery Holder with On/Off Switch and 2-Pin JST [3 x AAA Battery Holder with On/Off Switch and 2-Pin JST](https://www.adafruit.com/product/727) This battery holder connects 3 AAA batteries together in series for powering all kinds of projects. We spec'd these out because the box is slim, and 3 AAA's add up to about 3.3-4.5V, a very similar range to Lithium Ion/polymer (Li-Ion) batteries and have an on-off switch. That makes... In Stock [Buy Now](https://www.adafruit.com/product/727) [Related Guides to the Product](https://learn.adafruit.com/products/727/guides) ### Alkaline AAA batteries - 3 pack [Alkaline AAA batteries - 3 pack](https://www.adafruit.com/product/3520) Battery power for your portable project! These batteries are good quality at a good price, and work fantastic with any of the kits or projects in the shop that use AAA's. This is a pack of **3 AAA batteries**. These batteries are Alkaline (MnO2) chemistry, with a... Out of Stock [Buy Now](https://www.adafruit.com/product/3520) [Related Guides to the Product](https://learn.adafruit.com/products/3520/guides) ## Related Guides - [Adafruit Circuit Playground Express](https://learn.adafruit.com/adafruit-circuit-playground-express.md) - [CircuitPython Sound Box](https://learn.adafruit.com/circuitpython-sound-box.md) - [Bluefruit Ouija Board](https://learn.adafruit.com/bluefruit-ouija-board.md) - [Tappy Robotic Hand](https://learn.adafruit.com/robotic-tapping-hand-with-cpx.md) - [Fireflies with MakeCode](https://learn.adafruit.com/circuit-playground-fireflies-makecode.md) - [LED Reactive Light-Up Hockey Puck in MakeCode](https://learn.adafruit.com/led-hockey-puck.md) - [LO-LA59 Droid](https://learn.adafruit.com/lola-droid.md) - [Make It a Keyboard](https://learn.adafruit.com/make-it-a-keyboard.md) - [Rezz-Inspired NeoPixel Glasses](https://learn.adafruit.com/rezz-inspired-neopixel-glasses.md) - [Make It Bubble](https://learn.adafruit.com/make-it-bubble.md) - [LED Shoji Lamp](https://learn.adafruit.com/led-shoji-lamp.md) - [MakeCode Arcade Pixel Art Sprites](https://learn.adafruit.com/makecode-arcade-pixel-art-sprites.md) - [LED Matrix Hourglass](https://learn.adafruit.com/led-matrix-hourglass.md) - [Ping Pong Ball Launcher](https://learn.adafruit.com/ping-pong-ball-launcher-with-cpx.md) - [Circuit Playground Express Serial Communications](https://learn.adafruit.com/circuit-playground-express-serial-communications.md) - [Simon Game Clone with Circuit Playground Express and CircuitPython](https://learn.adafruit.com/simon-game-clone-with-circuitplayground-express-and-circuitpython.md)