# Chirping Plush Owl Toy ## Overview http://www.youtube.com/watch?v=obBYHfIoZCs Chirp chirp! Make this delightful sound-making plush toy with the [Sew-Your-Own Owl Kit](http://www.adafruit.com/products/1728) and [GEMMA plush toy guts kit](http://www.adafruit.com/products/1759). This simple circuit uses a tilt ball switch to trigger GEMMA to play a sound on the small speaker. You can program your own circuit to make other sounds too, so you can even mod a plush toy you already have! This is a beginner level sewing and soldering project. This tutorial has detailed photos for each step of circuit assembly and installing the circuit into the toy, and the owl kit comes with detailed printed instructions recommended for slightly experienced stitchers as young as eight. Info: ![](https://cdn-learn.adafruit.com/assets/assets/000/015/129/medium800/gemma_chirping-plush-owl-adafruit-diagram.jpg?1394578623) Click to enlarge this circuit diagram, and refer back to it throughout the building of your circuit! ![](https://cdn-learn.adafruit.com/assets/assets/000/015/081/medium800/gemma_1759_ORIG.jpg?1394557091) # Chirping Plush Owl Toy ## Tools & Supplies ![](https://cdn-learn.adafruit.com/assets/assets/000/015/083/medium800/gemma_1759kit_ORIG.jpg?1394557122) Your [GEMMA plush toy guts kit](http://www.adafruit.com/products/1759) includes: - [Adafruit Gemma M0](https://www.adafruit.com/product/3501) or [Adafruit GEMMA](https://www.adafruit.com/product/1222) - [150mAh lipoly battery](http://www.adafruit.com/products/1317) - [Micro Lipo charger](http://www.adafruit.com/products/1304 "Link: http://www.adafruit.com/products/1304") - [PN2222 transistor](http://www.adafruit.com/products/756) - [Tilt ball switch](http://www.adafruit.com/products/173 "Link: http://www.adafruit.com/products/173") - 220 ohm resistor - small speaker - 24 inches of [solid core wire](http://www.adafruit.com/products/290) - three sizes of [heat shrink tubing](http://www.adafruit.com/products/344) You will also need the [Sew-Your-Own Owl Kit](http://www.adafruit.com/products/1728) or an existing plush toy to mod. ![](https://cdn-learn.adafruit.com/assets/assets/000/015/091/medium800/gemma_1728kit_LRG.jpg?1394558292) In addition to the above materials, you should have the following tools on hand to complete this project: Any entry level 'all-in-one' soldering iron that you might find at your local hardware store should work. As with most things in life, you get what you pay for. Upgrading to a higher end soldering iron setup, like the [Hakko FX-888 that we stock in our store](http://adafruit.com/products/180 "Link: http://adafruit.com/products/180"), will make soldering fun and easy.
Do not use a "ColdHeat" soldering iron! They are not suitable for delicate electronics work and can damage the boards ([see here](http://www.epemag.wimborne.co.uk/cold-soldering2.htm)). [Click here to buy our entry level adjustable 30W 110V soldering iron.](http://adafruit.com/products/180 "Link: http://adafruit.com/products/180") [Click here to upgrade to a Genuine Hakko FX-888 adjustable temperature soldering iron.](http://adafruit.com/products/303 "Link: http://adafruit.com/products/303") [Learn how to solder with tons of tutorials!](http://learn.adafruit.com/adafruit-guide-excellent-soldering) ![gemma_simple-soldering-iron.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/072/medium640/gemma_simple-soldering-iron.jpg?1394556661) ![gemma_hakko-soldering-iron.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/073/medium640/gemma_hakko-soldering-iron.jpg?1394556679) You will want rosin core, 60/40 solder. Good solder is a good thing. Bad solder leads to bridging and cold solder joints which can be tough to find. [Click here to buy a spool of leaded solder (recommended for beginners).](http://adafruit.com/products/145) ![gemma_solder.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/075/medium640/gemma_solder.jpg?1394556715) A helping third hand tool really makes this project a joy to build. [Click here to buy a helping third hand tool.](https://www.adafruit.com/products/291) ![gemma_helping-hands.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/074/medium640/gemma_helping-hands.jpg?1394556691) Don't forget your [wire strippers](https://www.adafruit.com/products/527 "Link: https://www.adafruit.com/products/527")! ![gemma_wire-strippers.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/076/medium640/gemma_wire-strippers.jpg?1394556739) You'll need a pair of [flush snips](https://www.adafruit.com/products/152 "Link: https://www.adafruit.com/products/152"). ![gemma_snips.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/077/medium640/gemma_snips.jpg?1394556759) Sharp scissors are a must! ![gemma_scissors.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/078/medium640/gemma_scissors.jpg?1394556780) You will need a good quality basic multimeter that can measure voltage and continuity. [Click here to buy a basic multimeter.](http://adafruit.com/products/71) [Click here to buy a top of the line multimeter.](http://adafruit.com/products/308) [Click here to buy a pocket multimeter.](http://adafruit.com/products/850 "Link: http://adafruit.com/products/850") [Don't forget to learn how to use your multimeter too!](http://learn.adafruit.com/multimeters "Link: http://learn.adafruit.com/multimeters") ![gemma_multimeter.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/090/medium640/gemma_multimeter.jpg?1394558256) Heat gun or lighter to shrink your heat shrink tubing! ![gemma_chirping-plush-owl-adafruit-11.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/128/medium640/gemma_chirping-plush-owl-adafruit-11.jpg?1394575937) https://youtu.be/oUuGXWMr3sE # Chirping Plush Owl Toy ## Solder Circuit Start by preparing the speaker and tilt ball switch. Cut five pieces of wire about four inches in length each. Use wire strippers to strip the insulation off the last quarter inch of each end of each wire. ![gemma_chirping-plush-owl-adafruit-00.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/060/medium640/gemma_chirping-plush-owl-adafruit-00.jpg?1394555305) ![gemma_chirping-plush-owl-adafruit-01.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/061/medium640/gemma_chirping-plush-owl-adafruit-01.jpg?1394555435) Place the small speaker and tilt ball switch in the jaws of a helping hand tool. Use a soldering iron to heat up one of the pads of the small speaker. Apply a small amount of solder to the heated pad to tin it. This will make it easier to attach a wire in the next step. Repeat to tin the other speaker pad and the two legs of the tilt ball switch. ![gemma_chirping-plush-owl-adafruit-02.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/062/medium640/gemma_chirping-plush-owl-adafruit-02.jpg?1394555538) ![gemma_chirping-plush-owl-adafruit-03.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/063/medium640/gemma_chirping-plush-owl-adafruit-03.jpg?1394555646) Hold a wire up to the speaker's pad and reheat the solder with your soldering iron. Hold it to the joint until the solder flows around the wire, then remove heat and hold the wire until the solder solidifies. Repeat to solder wires to the the other speaker pad and both legs of the tilt ball switch. Snip off any excess wire. ![gemma_chirping-plush-owl-adafruit-04.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/064/medium640/gemma_chirping-plush-owl-adafruit-04.jpg?1394555740) ![gemma_chirping-plush-owl-adafruit-05.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/065/medium640/gemma_chirping-plush-owl-adafruit-05.jpg?1394555863) ![gemma_chirping-plush-owl-adafruit-06.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/066/medium640/gemma_chirping-plush-owl-adafruit-06.jpg?1394556021) Slide a piece of the smallest diameter heat shrink tubing over each leg of the tilt ball switch to insulate the wires and solder connections. Use a heat gun to shrink the tubing. Cut a piece of larger heat shrink tubing and slide over the entire tilt ball switch and wire connections; heat to shrink. ![gemma_chirping-plush-owl-adafruit-07.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/067/medium640/gemma_chirping-plush-owl-adafruit-07.jpg?1394556251) ![gemma_chirping-plush-owl-adafruit-08.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/068/medium640/gemma_chirping-plush-owl-adafruit-08.jpg?1394556329) ![gemma_chirping-plush-owl-adafruit-09.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/069/medium640/gemma_chirping-plush-owl-adafruit-09.jpg?1394556462) ![gemma_chirping-plush-owl-adafruit-10.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/070/medium640/gemma_chirping-plush-owl-adafruit-10.jpg?1394556549) ![gemma_chirping-plush-owl-adafruit-11.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/071/medium640/gemma_chirping-plush-owl-adafruit-11.jpg?1394556642) Your speaker and tilt ball switch are now ready for attaching to the rest of your circuit! ![gemma_chirping-plush-owl-adafruit-12.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/080/medium640/gemma_chirping-plush-owl-adafruit-12.jpg?1394556981) Now get GEMMA set up in your helping hand tool. Insert one of the legs of the 220 ohm resistor into the pin marked D2 on GEMMA. Solder in place. Snip off the extra wire lead and cut the free-hanging wire lead to half its length. ![gemma_chirping-plush-owl-adafruit-13.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/082/medium640/gemma_chirping-plush-owl-adafruit-13.jpg?1394557111) ![gemma_chirping-plush-owl-adafruit-14.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/084/medium640/gemma_chirping-plush-owl-adafruit-14.jpg?1394557335) ![gemma_chirping-plush-owl-adafruit-15.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/085/medium640/gemma_chirping-plush-owl-adafruit-15.jpg?1394557699) ![gemma_chirping-plush-owl-adafruit-16.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/086/medium640/gemma_chirping-plush-owl-adafruit-16.jpg?1394558048) Next it's time to connect up the center leg of the transistor. Pay close attention to the orientation of the transistor. The flat side should face the same direction as the front of GEMMA. Clip the transistor's center lead shorter and set up the component in your helping hand tool. Tin the lead of the resistor and the center lead of the transistor. ![gemma_chirping-plush-owl-adafruit-17.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/092/medium640/gemma_chirping-plush-owl-adafruit-17.jpg?1394558863) ![gemma_chirping-plush-owl-adafruit-18.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/093/medium640/gemma_chirping-plush-owl-adafruit-18.jpg?1394559036) ![gemma_chirping-plush-owl-adafruit-19.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/094/medium640/gemma_chirping-plush-owl-adafruit-19.jpg?1394559113) Don't forget heat shrink tubing! Cut a small piece of the medium size and place it over the resistor. Position the leads next to each other and carefully solder in place. Heat the tubing to shrink it down. ![gemma_chirping-plush-owl-adafruit-20.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/095/medium640/gemma_chirping-plush-owl-adafruit-20.jpg?1394565459) ![gemma_chirping-plush-owl-adafruit-21.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/096/medium640/gemma_chirping-plush-owl-adafruit-21.jpg?1394565768) ![gemma_chirping-plush-owl-adafruit-22.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/097/medium640/gemma_chirping-plush-owl-adafruit-22.jpg?1394565905) Set up the speaker in your helping hand tool and position one of its wire leads next to the transistor lead on the right. Twist the wires together and solder. Snip off any excess and slide a piece of heat shrink tubing over the connection. Heat to shrink in place. ![gemma_chirping-plush-owl-adafruit-23.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/098/medium640/gemma_chirping-plush-owl-adafruit-23.jpg?1394565996) ![gemma_chirping-plush-owl-adafruit-24.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/099/medium640/gemma_chirping-plush-owl-adafruit-24.jpg?1394566523) ![gemma_chirping-plush-owl-adafruit-25.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/100/medium640/gemma_chirping-plush-owl-adafruit-25.jpg?1394566617) ![gemma_chirping-plush-owl-adafruit-26.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/101/medium640/gemma_chirping-plush-owl-adafruit-26.jpg?1394566964) ![gemma_chirping-plush-owl-adafruit-27.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/102/medium640/gemma_chirping-plush-owl-adafruit-27.jpg?1394567097) Bend the speaker's other wire to the Vout pin on GEMMA and solder in place. Clip off any excess wire. ![gemma_chirping-plush-owl-adafruit-28.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/103/medium640/gemma_chirping-plush-owl-adafruit-28.jpg?1394567206) ![gemma_chirping-plush-owl-adafruit-29.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/104/medium640/gemma_chirping-plush-owl-adafruit-29.jpg?1394567347) Tin the last remaining lead of the transistor and solder to a piece of wire. Slide on some heat shrink and use a heat gun to shrink it.   Cut the wire to reach to GND on GEMMA, strip a bit of insulation off the end and solder the end to GND on GEMMA. ![gemma_chirping-plush-owl-adafruit-30.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/105/medium640/gemma_chirping-plush-owl-adafruit-30.jpg?1394567516) ![gemma_chirping-plush-owl-adafruit-31.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/106/medium640/gemma_chirping-plush-owl-adafruit-31.jpg?1394567597) ![gemma_chirping-plush-owl-adafruit-32.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/107/medium640/gemma_chirping-plush-owl-adafruit-32.jpg?1394567699) The tilt ball switch has two leads. Solder one lead to D0 on GEMMA and the other lead to GND on GEMMA. Solder both of these wires to the pad of the circuit board together. Clip off any excess wire. ![gemma_chirping-plush-owl-adafruit-33.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/108/medium640/gemma_chirping-plush-owl-adafruit-33.jpg?1394567833) ![gemma_chirping-plush-owl-adafruit-34.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/109/medium640/gemma_chirping-plush-owl-adafruit-34.jpg?1394567955) ![gemma_chirping-plush-owl-adafruit-35.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/110/medium640/gemma_chirping-plush-owl-adafruit-35.jpg?1394568050) ![gemma_chirping-plush-owl-adafruit-36.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/111/medium640/gemma_chirping-plush-owl-adafruit-36.jpg?1394568256) Your circuit is complete! Look it over, comparing it to the circuit diagram and double checking your solder joints. ![gemma_chirping-plush-owl-adafruit-37.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/112/medium640/gemma_chirping-plush-owl-adafruit-37.jpg?1394568931) ![gemma_chirping-plush-owl-adafruit-38.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/113/medium640/gemma_chirping-plush-owl-adafruit-38.jpg?1394569009) # Chirping Plush Owl Toy ## Arduino Code ![](https://cdn-learn.adafruit.com/assets/assets/000/015/114/medium800/gemma_chirping-plush-owl-adafruit-39.jpg?1394569322) Info: Plug GEMMA into your computer with a USB cable. If you've never programmed GEMMA before, you'll have to download and install the special Adafruit version of the Arduino IDE, which you can find in the [Introducing GEMMA guide](http://learn.adafruit.com/introducing-gemma). Once you're able to load programs onto GEMMA successfully, load up the following code: https://github.com/adafruit/Adafruit_Learning_System_Guides/blob/main/Chirping_Plush_Owl_Toy/Chirping_Plush_Owl_Toy.ino Now when you flick or shake the tilt ball switch, the circuit should chirp! If it doesn't, check your connections with a multimeter and be sure your software is configured properly for programming GEMMA. [Mike Barela has written additional animal sounds](http://learn.adafruit.com/adafruit-trinket-modded-stuffed-animal/animal-sounds), in case you want to meow or bark instead of chirp! ![](https://cdn-learn.adafruit.com/assets/assets/000/015/115/medium800/gemma_chirping-plush-owl-adafruit-40.jpg?1394569405) # Chirping Plush Owl Toy ## CircuitPython Code **GEMMA M0**  boards can run  **CircuitPython**  — a different approach to programming compared to Arduino sketches. In fact,  **CircuitPython comes factory pre-loaded on GEMMA M0**. If you’ve overwritten it with an Arduino sketch, or just want to learn the basics of setting up and using CircuitPython, this is explained in the [**Adafruit GEMMA M0 guide**](https://learn.adafruit.com/adafruit-gemma-m0/circuitpython-setup-1). Info: Below is CircuitPython code that works similarly (though not exactly the same) as the Arduino sketch shown on a prior page. To use this, plug the GEMMA M0 into USB…it should show up on your computer as a small  **flash drive** …then edit the file “ **code.py** ” with your text editor of choice. Select and copy the code below and paste it into that file,  **entirely replacing its contents**  (don’t mix it in with lingering bits of old code). When you save the file, the code should  **start running almost immediately**  (if not, see notes at the bottom of this page). **If GEMMA M0 doesn’t show up as a drive, follow the GEMMA M0 guide link above to prepare the board for CircuitPython.** https://github.com/adafruit/Adafruit_Learning_System_Guides/blob/main/Chirping_Plush_Owl_Toy/code.py # Chirping Plush Owl Toy ## Assemble Owl Try out your circuit on battery power by plugging it into GEMMA's JST port. Tape up the battery to protect it and protect the wire connections. ![gemma_chirping-plush-owl-adafruit-41.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/116/medium640/gemma_chirping-plush-owl-adafruit-41.jpg?1394569486) ![gemma_chirping-plush-owl-adafruit-42.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/117/medium640/gemma_chirping-plush-owl-adafruit-42.jpg?1394570090) Start making the owl according to the paper instructions included in the box. Cut a slit up the back body piece to make a path for the speaker wires. Arrange your circuit as shown. ![gemma_chirping-plush-owl-adafruit-43.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/118/medium640/gemma_chirping-plush-owl-adafruit-43.jpg?1394570639) ![gemma_chirping-plush-owl-adafruit-44.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/119/medium640/gemma_chirping-plush-owl-adafruit-44.jpg?1394570746) Begin stuffing the body, then insert the speaker just behind the front of the body. Bend the wires so they route straight out the back of the owl body, at the top of the slit you made in the last step. Continue and finish stuffing the owl. Plug in the battery to test out the loudness of your circuit. If it's not as loud as you like, make sure the speaker is flush up against the front of the body and not insulated by any stuffing. Unplug the battery to finish constructing the owl. ![gemma_chirping-plush-owl-adafruit-45.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/120/medium640/gemma_chirping-plush-owl-adafruit-45.jpg?1394570857) ![gemma_chirping-plush-owl-adafruit-46.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/121/medium640/gemma_chirping-plush-owl-adafruit-46.jpg?1394571041) ![gemma_chirping-plush-owl-adafruit-47.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/122/medium640/gemma_chirping-plush-owl-adafruit-47.jpg?1394571206) Stitch up the slit and bottom of the owl and continue making the owl as per the paper instructions. ![gemma_chirping-plush-owl-adafruit-48.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/123/medium640/gemma_chirping-plush-owl-adafruit-48.jpg?1394571318) ![gemma_chirping-plush-owl-adafruit-49.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/124/medium640/gemma_chirping-plush-owl-adafruit-49.jpg?1394571956) Because the GEMMA sits inside the tail of the owl, we needed to cut an additional tail piece from the brown felt included in the owl kit, then sewed it to the original tail piece to make a pocket. The battery sits inside the cape of the owl, and GEMMA's JST port conveniently faces the opening for convenient disconnection. When the battery runs down you will need to disconnect and remove the battery, and charge it using the MicroLipo charger. (Lithium batteries are not made to be recharged while inside the owl, as the battery may get hot. So that's why you need to remove to recharge). Also the GEMMA v1, v2 and M0 do not support recharging Lithium cells.  Because the wires enter the tail, this mod has an added advantage of allowing the stiffened tail to stabilize the toy when it stands! ![gemma_chirping-plush-owl-adafruit-50.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/125/medium640/gemma_chirping-plush-owl-adafruit-50.jpg?1394572064) ![gemma_chirping-plush-owl-adafruit-51.jpg](https://cdn-learn.adafruit.com/assets/assets/000/015/126/medium640/gemma_chirping-plush-owl-adafruit-51.jpg?1394572153) ![](https://cdn-learn.adafruit.com/assets/assets/000/015/127/medium800/gemma_1759_ORIG.jpg?1394572328) ## Related Guides - [Sewable NeoPixels](https://learn.adafruit.com/flora-rgb-smart-pixels.md) - [Glowing Birthday Number Crown](https://learn.adafruit.com/glowing-birthday-number-crown.md) - [Glowing Scale Armor](https://learn.adafruit.com/glowing-scale-armor.md) - [Disco Band Camp Jacket](https://learn.adafruit.com/disco-band-camp-jacket.md) - [Magic Storybook with ChatGPT](https://learn.adafruit.com/magic-storybook-with-chatgpt.md) - [NeoPixel Flame Torch](https://learn.adafruit.com/neopixel-flame-torch.md) - [Wireless Control Button for WLED Projects](https://learn.adafruit.com/wireless-control-button-for-wled-projects.md) - [Gemma Color Touch Pendant Necklace](https://learn.adafruit.com/gemma-color-touch-pendant-necklace.md) - [Robotic AI Bear using ChatGPT](https://learn.adafruit.com/robotic-ai-bear-using-chatgpt.md) - [NeoPixel Novelty Cufflinks with Scrolling Text](https://learn.adafruit.com/neopixel-novelty-cufflinks-with-scrolling-text.md) - [Playa Festival Bike](https://learn.adafruit.com/playa-festival-bike.md) - [Phantom Mouse Jiggler](https://learn.adafruit.com/phantom-mouse-jiggler.md) - [Bluetooth Remote Control for the Lego Droid Developer Kit](https://learn.adafruit.com/bluetooth-remote-for-lego-droid.md) - [Glue Stick Light Pipe Sculpture](https://learn.adafruit.com/glue-stick-archway.md) - [Magic Light Bag of Holding](https://learn.adafruit.com/magic-light-bag-of-holding.md) - [Little Desktop Connection Machine](https://learn.adafruit.com/little-connection-machine.md)