# Remote Control Candy Dispenser Ghost ## Overview https://youtu.be/SwCxFk3fIb4 For social distant trick or treating, we thought we’d make a BLE controlled servo claw using the Circuit Playground Bluefruit. We put our project on this flying ghost prop we got from our local halloween shop. It moves up and down along a rope that's strung across our porch. We tied one end to a tree and the other to a lamp post on the side of the house. The servo is triggered using our mobile phone with the Bluefruit connect app. ![3d_printing_hero-drop.gif](https://cdn-learn.adafruit.com/assets/assets/000/096/318/medium640thumb/3d_printing_hero-drop.jpg?1603566017) ![3d_printing_hero-claw-loop.gif](https://cdn-learn.adafruit.com/assets/assets/000/096/319/medium640thumb/3d_printing_hero-claw-loop.jpg?1603566055) This is a 3d printed claw gripper that we designed to hold a small bag of candy. We think this is a fun way to give out candy that could be adapted for all sorts of projects. The BLE libraries for Circuit Python makes it easy to control servos using the Bluefruit app. In the code, the up and down buttons are set up to trigger the servo when they’re pressed. The angle of the servo is tuned for the gripper so it doesn’t stress out the motor. In the Bluefruit app you can press the up and down buttons to open and close the gripper. We think this is a quick and easy way to make a BLE controlled servo project. ![3d_printing_ghost-drop-loop3.gif](https://cdn-learn.adafruit.com/assets/assets/000/096/320/medium640thumb/3d_printing_ghost-drop-loop3.jpg?1603566153) ![3d_printing_assembled-claw-loop.gif](https://cdn-learn.adafruit.com/assets/assets/000/096/321/medium640thumb/3d_printing_assembled-claw-loop.jpg?1603566226) ![](https://cdn-learn.adafruit.com/assets/assets/000/096/322/medium800thumb/3d_printing_ghost-drop-loop2.jpg?1603566281) ## Parts Featured ### Circuit Playground Bluefruit - Bluetooth® Low Energy [Circuit Playground Bluefruit - Bluetooth® Low Energy](https://www.adafruit.com/product/4333) **Circuit Playground Bluefruit** is our third board in the Circuit Playground series, another step towards a perfect introduction to electronics and programming. We've taken the popular Circuit Playground Express and made it even better! Now the main chip is an nRF52840... In Stock [Buy Now](https://www.adafruit.com/product/4333) [Related Guides to the Product](https://learn.adafruit.com/products/4333/guides) ![shot of a Black woman's neon-green manicured hand holding up a Circuit Playground Bluefruit glowing rainbow LEDs.](https://cdn-shop.adafruit.com/640x480/4333-11.jpg) Featured ### Micro Servo - MG90D High Torque Metal Gear [Micro Servo - MG90D High Torque Metal Gear](https://www.adafruit.com/product/1143) Add more power to your robot with this metal-geared MG90D servo. The tiny little servo can rotate approximately 90 degrees (45 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... Out of Stock [Buy Now](https://www.adafruit.com/product/1143) [Related Guides to the Product](https://learn.adafruit.com/products/1143/guides) ![High Torque Metal Gear Micro Servo with three pin cable](https://cdn-shop.adafruit.com/640x480/1143-08.jpg) Featured ### Lithium Ion Polymer Battery - 3.7v 500mAh [Lithium Ion Polymer Battery - 3.7v 500mAh](https://www.adafruit.com/product/1578) 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 500mAh for a total of about 1.9 Wh. If you need a larger (or smaller!) battery, In Stock [Buy Now](https://www.adafruit.com/product/1578) [Related Guides to the Product](https://learn.adafruit.com/products/1578/guides) ![Angled shot of a Lithium Ion Polymer Battery 3.7V 500mAh with JST-PH connector.](https://cdn-shop.adafruit.com/640x480/1578-03.jpg) Featured ### Black Nylon Machine Screw and Stand-off Set – M3 Thread [Black Nylon Machine Screw and Stand-off Set – M3 Thread](https://www.adafruit.com/product/4685) Totaling **420 pieces** , this **M3 Screw Set**  is a must-have for your workstation. You'll have enough screws, nuts, and hex standoffs to fuel your maker tendencies for days on end! M3 size screws fit a number of Adafruit breakout/dev board... In Stock [Buy Now](https://www.adafruit.com/product/4685) [Related Guides to the Product](https://learn.adafruit.com/products/4685/guides) ![Opened box showing many nylon screws](https://cdn-shop.adafruit.com/640x480/4685-01.jpg) Featured ### Fully Reversible Pink/Purple USB A to micro B Cable - 1m long [Fully Reversible Pink/Purple USB A to micro B Cable - 1m long](https://www.adafruit.com/product/4111) This cable is not only super-fashionable, with a woven pink and purple Blinka-like pattern, it's also fully reversible! That's right, you will save _seconds_ a day by not having to flip the cable around. First let's talk about the cover and over-molding. We got these... In Stock [Buy Now](https://www.adafruit.com/product/4111) [Related Guides to the Product](https://learn.adafruit.com/products/4111/guides) ![Fully Reversible Pink/Purple USB A to micro B Cable](https://cdn-shop.adafruit.com/640x480/4111-02.jpg) ##     ![3d_printing_parts.jpg](https://cdn-learn.adafruit.com/assets/assets/000/096/349/medium640/3d_printing_parts.jpg?1603570966) ![3d_printing_screws.jpg](https://cdn-learn.adafruit.com/assets/assets/000/096/350/medium640/3d_printing_screws.jpg?1603571034) ### Part: Small Flying Ghost quantity: 1 Small Flying Ghost Decoration [Small Flying Ghost](https://www.spirithalloween.com/product/small-flying-ghost-decorations/55717.uts) ### Black Nylon Machine Screw and Stand-off Set – M3 Thread quantity: 4 [Black Nylon Machine Screw and Stand-off Set – M3 Thread](https://www.adafruit.com/product/4685) Totaling **420 pieces** , this **M3 Screw Set**  is a must-have for your workstation. You'll have enough screws, nuts, and hex standoffs to fuel your maker tendencies for days on end! M3 size screws fit a number of Adafruit breakout/dev board... In Stock [Buy Now](https://www.adafruit.com/product/4685) [Related Guides to the Product](https://learn.adafruit.com/products/4685/guides) ![Opened box showing many nylon screws](https://cdn-shop.adafruit.com/640x480/4685-01.jpg) ### Black Nylon Machine Screw and Stand-off Set – M3 Thread [Black Nylon Machine Screw and Stand-off Set – M3 Thread](https://www.adafruit.com/product/4685) Totaling **420 pieces** , this **M3 Screw Set**  is a must-have for your workstation. You'll have enough screws, nuts, and hex standoffs to fuel your maker tendencies for days on end! M3 size screws fit a number of Adafruit breakout/dev board... In Stock [Buy Now](https://www.adafruit.com/product/4685) [Related Guides to the Product](https://learn.adafruit.com/products/4685/guides) ![Opened box showing many nylon screws](https://cdn-shop.adafruit.com/640x480/4685-01.jpg) ### Black Nylon Machine Screw and Stand-off Set – M2.5 Thread quantity: 2 [Black Nylon Machine Screw and Stand-off Set – M2.5 Thread](https://www.adafruit.com/product/3299) Totaling 380 pieces, this **M2.5 Screw Set**  is a must-have for your workstation. You'll have enough screws, nuts, and hex standoffs to fuel your maker tendencies for days on end! M2.5 size screws fit almost all of the Adafruit breakout/dev board mounting holes... In Stock [Buy Now](https://www.adafruit.com/product/3299) [Related Guides to the Product](https://learn.adafruit.com/products/3299/guides) ![Black Nylon Screw and Stand-off Set with M2.5 Threads, kit box](https://cdn-shop.adafruit.com/640x480/3299-00.jpg) ### 1.25mm Pitch 3-pin Cable Matching Pair - 40cm long [1.25mm Pitch 3-pin Cable Matching Pair - 40cm long](https://www.adafruit.com/product/4721) When 0.1" is too big, and JST PH's too chunky, these ultra-slim 1.25mm connectors are a reliable alternative. These are only 1.25mm pitch, but have a nice clicky connection. These cables are nice and long, 40cm in fact. They've got both small form factor and are a... In Stock [Buy Now](https://www.adafruit.com/product/4721) [Related Guides to the Product](https://learn.adafruit.com/products/4721/guides) ![1.25mm Pitch 3-pin Cable Matching Pair](https://cdn-shop.adafruit.com/640x480/4721-02.jpg) - [Next Page](https://learn.adafruit.com/ble-claw/circuit-diagram.md) ## Guide Products ### Circuit Playground Bluefruit - Bluetooth® Low Energy [Circuit Playground Bluefruit - Bluetooth® Low Energy](https://www.adafruit.com/product/4333) **Circuit Playground Bluefruit** is our third board in the Circuit Playground series, another step towards a perfect introduction to electronics and programming. We've taken the popular Circuit Playground Express and made it even better! Now the main chip is an nRF52840... In Stock [Buy Now](https://www.adafruit.com/product/4333) [Related Guides to the Product](https://learn.adafruit.com/products/4333/guides) ### Micro Servo - MG90D High Torque Metal Gear [Micro Servo - MG90D High Torque Metal Gear](https://www.adafruit.com/product/1143) Add more power to your robot with this metal-geared MG90D servo. The tiny little servo can rotate approximately 90 degrees (45 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... Out of Stock [Buy Now](https://www.adafruit.com/product/1143) [Related Guides to the Product](https://learn.adafruit.com/products/1143/guides) ### Lithium Ion Polymer Battery - 3.7v 500mAh [Lithium Ion Polymer Battery - 3.7v 500mAh](https://www.adafruit.com/product/1578) 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 500mAh for a total of about 1.9 Wh. If you need a larger (or smaller!) battery, In Stock [Buy Now](https://www.adafruit.com/product/1578) [Related Guides to the Product](https://learn.adafruit.com/products/1578/guides) ### Black Nylon Machine Screw and Stand-off Set – M3 Thread [Black Nylon Machine Screw and Stand-off Set – M3 Thread](https://www.adafruit.com/product/4685) Totaling **420 pieces** , this **M3 Screw Set**  is a must-have for your workstation. You'll have enough screws, nuts, and hex standoffs to fuel your maker tendencies for days on end! M3 size screws fit a number of Adafruit breakout/dev board... In Stock [Buy Now](https://www.adafruit.com/product/4685) [Related Guides to the Product](https://learn.adafruit.com/products/4685/guides) ### Fully Reversible Pink/Purple USB A to micro B Cable - 1m long [Fully Reversible Pink/Purple USB A to micro B Cable - 1m long](https://www.adafruit.com/product/4111) This cable is not only super-fashionable, with a woven pink and purple Blinka-like pattern, it's also fully reversible! That's right, you will save _seconds_ a day by not having to flip the cable around. First let's talk about the cover and over-molding. We got these... In Stock [Buy Now](https://www.adafruit.com/product/4111) [Related Guides to the Product](https://learn.adafruit.com/products/4111/guides) ### Black Nylon Machine Screw and Stand-off Set – M2.5 Thread [Black Nylon Machine Screw and Stand-off Set – M2.5 Thread](https://www.adafruit.com/product/3299) Totaling 380 pieces, this **M2.5 Screw Set**  is a must-have for your workstation. You'll have enough screws, nuts, and hex standoffs to fuel your maker tendencies for days on end! M2.5 size screws fit almost all of the Adafruit breakout/dev board mounting holes... In Stock [Buy Now](https://www.adafruit.com/product/3299) [Related Guides to the Product](https://learn.adafruit.com/products/3299/guides) ### 1.25mm Pitch 3-pin Cable Matching Pair - 40cm long [1.25mm Pitch 3-pin Cable Matching Pair - 40cm long](https://www.adafruit.com/product/4721) When 0.1" is too big, and JST PH's too chunky, these ultra-slim 1.25mm connectors are a reliable alternative. These are only 1.25mm pitch, but have a nice clicky connection. These cables are nice and long, 40cm in fact. They've got both small form factor and are a... In Stock [Buy Now](https://www.adafruit.com/product/4721) [Related Guides to the Product](https://learn.adafruit.com/products/4721/guides) ## Related Guides - [Adafruit Circuit Playground Bluefruit](https://learn.adafruit.com/adafruit-circuit-playground-bluefruit.md) - [3D Printed Starro Face Mask](https://learn.adafruit.com/3d-printed-starro-face-mask.md) - [LED Acrylic Sign](https://learn.adafruit.com/led-acrylic-sign.md) - [ItsyBitsy ESP32 wFL case](https://learn.adafruit.com/itsybitsy-esp32-wfl-case.md) - [Candy Bucket GIF Player Eyes](https://learn.adafruit.com/candy-bucket-gif-eyes.md) - [Stepper Motor Turntable](https://learn.adafruit.com/stepper-motor-turntable.md) - [MagTag Case](https://learn.adafruit.com/magtag-case.md) - [RGB & HSV NeoPixel Dialer](https://learn.adafruit.com/rgb-hsv-neopixel-dialer.md) - [Flapping Halloween Vampire Bat](https://learn.adafruit.com/flapping-halloween-vampire-bat.md) - [USB HID Crank Controller](https://learn.adafruit.com/usb-hid-crank-controller.md) - [Solderless Robot Toy Xylophone](https://learn.adafruit.com/solderless-robot-toy-xylophone.md) - [GEMMA M0 Case](https://learn.adafruit.com/gemma-m0-case.md) - [CircuitPython BLE Advertising Beacons](https://learn.adafruit.com/circuitpython-ble-advertising-beacons.md) - [MatrixPortal CircuitPython Animated Message Board](https://learn.adafruit.com/matrixportal-circuitpython-animated-message-board.md) - [Kitty Toe Bean Keypad with Color TFT](https://learn.adafruit.com/kitty-toe-bean-paw-keypad-color-tct.md) - [3D Printed Case for Raspberry Pi Pico](https://learn.adafruit.com/raspberry-pi-pico-case.md)