# See N Say Brain Transplant ## Overview ![](https://cdn-learn.adafruit.com/assets/assets/000/118/004/medium800/hacks_seesay-0942.jpg?1675217295) https://youtu.be/CytjApTys-s By now we all get it, **cows** say **moo**. Sure. But what about **subway car doors** and **jackhammers**? What do they say? Build your own city-themed See N Say to teach the children! ![hacks_rosariorat_small2.png](https://cdn-learn.adafruit.com/assets/assets/000/118/009/medium640/hacks_rosariorat_small2.png?1675228123) This project replaces the brains of a classic talking toy with a modern, CircuitPython-powered KB2040 microcontroller, with a collection of typical urban sounds and custom illustrations. **illustrations by Brian Kesinger. Explore more of his work at [Briankesinger.com](https://www.briankesinger.com/)** ## Parts ### Adafruit KB2040 - RP2040 Kee Boar Driver [Adafruit KB2040 - RP2040 Kee Boar Driver](https://www.adafruit.com/product/5302) A wild Kee Boar appears! It’s a shiny **KB2040**! An Arduino Pro Micro-shaped board for Keebs with RP2040. (#keeblife 4 evah) A lot of folks like using Adafruit parts for their Keeb builds – but with the ItsyBitsy not being pin-compatible with the Pro Micro pinout, it... In Stock [Buy Now](https://www.adafruit.com/product/5302) [Related Guides to the Product](https://learn.adafruit.com/products/5302/guides) ![Angled shot of short black microcontroller.](https://cdn-shop.adafruit.com/640x480/5302-07.jpg) ### Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A [Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A](https://www.adafruit.com/product/3006) Listen to this good news - we now have an all in one digital audio amp breakout board that works incredibly well with the [Raspberry Pi](https://www.adafruit.com/category/105)! If you're looking for an easy and low cost way to get your digital sound files... In Stock [Buy Now](https://www.adafruit.com/product/3006) [Related Guides to the Product](https://learn.adafruit.com/products/3006/guides) ![Angled shot of blue, square-shaped, amplifier breakout with a pre-soldered terminal block.](https://cdn-shop.adafruit.com/640x480/3006-04.jpg) ### Adafruit MiniBoost 5V @ 1A - TPS61023 [Adafruit MiniBoost 5V @ 1A - TPS61023](https://www.adafruit.com/product/4654) This adorable little board will come in very handy whenever you need a good amount of 5V power. It's the size of a linear regulator, but it's actually a mini-booster! Input 2-5VDC on one side, and **get 5V at up to 1A supply** on the other. Perfect for use with... In Stock [Buy Now](https://www.adafruit.com/product/4654) [Related Guides to the Product](https://learn.adafruit.com/products/4654/guides) ![Angled shot of boost converter PCB.](https://cdn-shop.adafruit.com/640x480/4654-03.jpg) ### Adafruit Perma-Proto Quarter-sized Breadboard PCB - Single [Adafruit Perma-Proto Quarter-sized Breadboard PCB - Single](https://www.adafruit.com/product/1608) Customers have asked us to carry basic perf-board, but we never liked the look of most basic perf: it's always crummy quality, with pads that flake off and no labeling. Then we thought about how people **actually** prototype - usually starting with a solderless breadboard and... In Stock [Buy Now](https://www.adafruit.com/product/1608) [Related Guides to the Product](https://learn.adafruit.com/products/1608/guides) ![Angled Shot of the Adafruit Perma-Proto Quarter-sized Breadboard PCB - Single.](https://cdn-shop.adafruit.com/640x480/1608-03.jpg) ### Mini Panel Mount SPDT Toggle Switch [Mini Panel Mount SPDT Toggle Switch](https://www.adafruit.com/product/3221) This or that, one or the other, perhaps or perhaps not! So hard to make decisions these days without feeling like you're just going back and forth constantly. Deciding whether or not to use this mini toggle switch? That's the easiest decision you'll make all day! This... In Stock [Buy Now](https://www.adafruit.com/product/3221) [Related Guides to the Product](https://learn.adafruit.com/products/3221/guides) ![Angled shot of blue, mini, SPDT toggle switch.](https://cdn-shop.adafruit.com/640x480/3221-01.jpg) ### USB Type A to Type C Cable - approx 1 meter / 3 ft long [USB Type A to Type C Cable - approx 1 meter / 3 ft long](https://www.adafruit.com/product/4474) As technology changes and adapts, so does Adafruit. This   **USB Type A to Type C** cable will help you with the transition to USB C, even if you're still totin' around a USB Type A hub, computer or laptop. USB C is the latest industry-standard connector for... In Stock [Buy Now](https://www.adafruit.com/product/4474) [Related Guides to the Product](https://learn.adafruit.com/products/4474/guides) ![Angled shot of a coiled black, USB-C to USB-A cable.](https://cdn-shop.adafruit.com/640x480/4474-02.jpg) **Fisher Price Classic Farmer Says See 'N Say** Available at toy stores and online, such as [here](https://www.amazon.com/Fisher-Price-Classic-Farmer-Says/dp/B00IVJK8Y0). Note, this project uses the modern electronic toy, not a vintage mechanical one. ![hacks_seensay.jpg](https://cdn-learn.adafruit.com/assets/assets/000/117/760/medium640/hacks_seensay.jpg?1675020650) ### Shottky Diode You can use a regular power diode such as the one below, but a proper [Shottky diode](https://www.digikey.com/en/products/detail/vishay-general-semiconductor-diodes-division/1N5819-E3-73/4764824) is even better, it only has a ~0.3V drop vs. closer to ~0.7V. ### 1N4001 Diode - 10 pack [1N4001 Diode - 10 pack](https://www.adafruit.com/product/755) This here is a 10 pack of the classic 1N4001 power blocking diode. These are good for reverse polarity protection (put it between your DC power jack and circuitry to avoid a negative-voltage that would zap your delicate electronics), kickback protection (place across your solenoids, relays... Out of Stock [Buy Now](https://www.adafruit.com/product/755) [Related Guides to the Product](https://learn.adafruit.com/products/755/guides) ![ 10 pack of 1N4001 Diodes](https://cdn-shop.adafruit.com/640x480/755-03.jpg) ### "Wire Wrap" Thin Prototyping & Repair Wire - 200m 30AWG Blue ["Wire Wrap" Thin Prototyping & Repair Wire - 200m 30AWG Blue](https://www.adafruit.com/product/1446) This stuff is called "wire-wrap wire" because it used to be used for wire-wrapping high-speed digital circuits on a special kind of contact board. It's pretty rare to see wire-wrapping in these days of low-cost PCB fabrication but the wire is still really handy for prototyping work. It's... Out of Stock [Buy Now](https://www.adafruit.com/product/1446) [Related Guides to the Product](https://learn.adafruit.com/products/1446/guides) ![Large spool of Wire Wrap Thin Prototyping & Repair Wire](https://cdn-shop.adafruit.com/640x480/1446-03.jpg) ### Part: High Temperature Polyimide Tape quantity: 1 1cm wide x 33 meter roll [High Temperature Polyimide Tape](https://www.adafruit.com/product/3057) ## Optional You can replace the toy's graphics with your own, or the handy downloadable graphics included in the guide. Vinyl sticker paper for laser printers works well, [such as this](https://www.amazon.com/gp/product/B086HK7RL3/?th=1). - [Next Page](https://learn.adafruit.com/see-n-say-brain-transplant/circuitpython.md) ## Featured Products ### Adafruit KB2040 - RP2040 Kee Boar Driver [Adafruit KB2040 - RP2040 Kee Boar Driver](https://www.adafruit.com/product/5302) A wild Kee Boar appears! It’s a shiny **KB2040**! An Arduino Pro Micro-shaped board for Keebs with RP2040. (#keeblife 4 evah) A lot of folks like using Adafruit parts for their Keeb builds – but with the ItsyBitsy not being pin-compatible with the Pro Micro pinout, it... In Stock [Buy Now](https://www.adafruit.com/product/5302) [Related Guides to the Product](https://learn.adafruit.com/products/5302/guides) ### Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A [Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A](https://www.adafruit.com/product/3006) Listen to this good news - we now have an all in one digital audio amp breakout board that works incredibly well with the [Raspberry Pi](https://www.adafruit.com/category/105)! If you're looking for an easy and low cost way to get your digital sound files... In Stock [Buy Now](https://www.adafruit.com/product/3006) [Related Guides to the Product](https://learn.adafruit.com/products/3006/guides) ### Adafruit MiniBoost 5V @ 1A - TPS61023 [Adafruit MiniBoost 5V @ 1A - TPS61023](https://www.adafruit.com/product/4654) This adorable little board will come in very handy whenever you need a good amount of 5V power. It's the size of a linear regulator, but it's actually a mini-booster! Input 2-5VDC on one side, and **get 5V at up to 1A supply** on the other. Perfect for use with... In Stock [Buy Now](https://www.adafruit.com/product/4654) [Related Guides to the Product](https://learn.adafruit.com/products/4654/guides) ### Adafruit Perma-Proto Quarter-sized Breadboard PCB - Single [Adafruit Perma-Proto Quarter-sized Breadboard PCB - Single](https://www.adafruit.com/product/1608) Customers have asked us to carry basic perf-board, but we never liked the look of most basic perf: it's always crummy quality, with pads that flake off and no labeling. Then we thought about how people **actually** prototype - usually starting with a solderless breadboard and... In Stock [Buy Now](https://www.adafruit.com/product/1608) [Related Guides to the Product](https://learn.adafruit.com/products/1608/guides) ### Mini Panel Mount SPDT Toggle Switch [Mini Panel Mount SPDT Toggle Switch](https://www.adafruit.com/product/3221) This or that, one or the other, perhaps or perhaps not! So hard to make decisions these days without feeling like you're just going back and forth constantly. Deciding whether or not to use this mini toggle switch? That's the easiest decision you'll make all day! This... In Stock [Buy Now](https://www.adafruit.com/product/3221) [Related Guides to the Product](https://learn.adafruit.com/products/3221/guides) ### USB Type A to Type C Cable - approx 1 meter / 3 ft long [USB Type A to Type C Cable - approx 1 meter / 3 ft long](https://www.adafruit.com/product/4474) As technology changes and adapts, so does Adafruit. This   **USB Type A to Type C** cable will help you with the transition to USB C, even if you're still totin' around a USB Type A hub, computer or laptop. USB C is the latest industry-standard connector for... In Stock [Buy Now](https://www.adafruit.com/product/4474) [Related Guides to the Product](https://learn.adafruit.com/products/4474/guides) ### 1N4001 Diode - 10 pack [1N4001 Diode - 10 pack](https://www.adafruit.com/product/755) This here is a 10 pack of the classic 1N4001 power blocking diode. These are good for reverse polarity protection (put it between your DC power jack and circuitry to avoid a negative-voltage that would zap your delicate electronics), kickback protection (place across your solenoids, relays... Out of Stock [Buy Now](https://www.adafruit.com/product/755) [Related Guides to the Product](https://learn.adafruit.com/products/755/guides) ### "Wire Wrap" Thin Prototyping & Repair Wire - 200m 30AWG Blue ["Wire Wrap" Thin Prototyping & Repair Wire - 200m 30AWG Blue](https://www.adafruit.com/product/1446) This stuff is called "wire-wrap wire" because it used to be used for wire-wrapping high-speed digital circuits on a special kind of contact board. It's pretty rare to see wire-wrapping in these days of low-cost PCB fabrication but the wire is still really handy for prototyping work. It's... Out of Stock [Buy Now](https://www.adafruit.com/product/1446) [Related Guides to the Product](https://learn.adafruit.com/products/1446/guides) ## Related Guides - [Adafruit MAX98357 I2S Class-D Mono Amp](https://learn.adafruit.com/adafruit-max98357-i2s-class-d-mono-amp.md) - [Adafruit KB2040](https://learn.adafruit.com/adafruit-kb2040.md) - [Circle of Fifths Euclidean Synth with synthio and CircuitPython](https://learn.adafruit.com/circle-of-fifths-euclidean-synth-with-synthio-and-circuitpython.md) - [PB Gherkin 30% keyboard with KMK, CircuitPython, & KB2040](https://learn.adafruit.com/pb-gherkhin-30-keyboard-with-kmk-circuitpython-kb2040.md) - [Raspberry Pi Zero NPR One Radio](https://learn.adafruit.com/raspberry-pi-zero-npr-one-radio.md) - [NeoPixel Flame Torch](https://learn.adafruit.com/neopixel-flame-torch.md) - [Robotic AI Bear using ChatGPT](https://learn.adafruit.com/robotic-ai-bear-using-chatgpt.md) - [Guardian Robot – Zelda BOTW](https://learn.adafruit.com/guardian-robot-zelda-botw.md) - [May Pad Macropad with the KB2040, KMK, and CircuitPython](https://learn.adafruit.com/maypad-macropad-with-the-kb2040-kmk-and-circuitpython.md) - [Wireless BLE MIDI Robot Xylophone](https://learn.adafruit.com/wireless-ble-midi-robot-xylophone.md) - [Breadboards for Beginners](https://learn.adafruit.com/breadboards-for-beginners.md) - [DOOM Keeb](https://learn.adafruit.com/doom-keeb.md) - [ Analog IC Insights On-the-Go by Maxim Integrated](https://learn.adafruit.com/maxim-app.md) - [RGB Matrix Dreidel Game](https://learn.adafruit.com/rgb-matrix-dreidel-game.md) - [Tyrell Desktop Synthesizer](https://learn.adafruit.com/tyrell-desktop-synthesizer.md) - [Mindfulness Clock OF DOOM](https://learn.adafruit.com/mindfulness-clock-of-doom.md) - [Fisher-Price USB Controller](https://learn.adafruit.com/fisher-price-usb-controller.md)