# Use circup to easily keep your CircuitPython libraries up to date ## Overview Circup is a software utility that makes it easy to install and update the libraries in the **lib** folder on your CircuitPython devices. It can install new libraries, and also determine if any libraries need updating and perform that updating. Circup was originally written by [Nicholas Tollervey](https://github.com/ntoll). ![](https://cdn-learn.adafruit.com/assets/assets/000/081/042/medium800/customer___partner_projects_guide_main.jpg?1568756034) This kind of utility is especially useful with some of our M4 CircuitPython devices that can handle lots of libraries such as the Adafruit Grand Central M4 Express. ### Adafruit Grand Central M4 Express featuring the SAMD51 [Adafruit Grand Central M4 Express featuring the SAMD51](https://www.adafruit.com/product/4064) Are you ready? Really ready? Cause here comes the **Adafruit Grand Central** featuring the **Microchip ATSAMD51**. This dev board is so big, it's not named after a Metro train, it's a whole freakin' _station_! This board is like a freight... In Stock [Buy Now](https://www.adafruit.com/product/4064) [Related Guides to the Product](https://learn.adafruit.com/products/4064/guides) ![Angled Shot of the Adafruit Grand Central M4 Express featuring the SAMD51.](https://cdn-shop.adafruit.com/640x480/4064-05.jpg) The PyPortal is packed with so many features, that it uses a lot of libraries, making this tool especially useful. ### Adafruit PyPortal - CircuitPython Powered Internet Display [Adafruit PyPortal - CircuitPython Powered Internet Display](https://www.adafruit.com/product/4116) **PyPortal** , our easy-to-use IoT device that allows you to create all the things for the “Internet of Things” in minutes. Make custom touch screen interface GUIs, all open-source, and Python-powered using tinyJSON / APIs to get news, stock, weather, cat photos,... Out of Stock [Buy Now](https://www.adafruit.com/product/4116) [Related Guides to the Product](https://learn.adafruit.com/products/4116/guides) ![Front view of a Adafruit PyPortal - CircuitPython Powered Internet Display with a pyportal logo image on the display. ](https://cdn-shop.adafruit.com/640x480/4116-00.jpeg) Our PyGamer and PyBadge also use quite a few libraries. ### Adafruit PyGamer for MakeCode Arcade, CircuitPython or Arduino [Adafruit PyGamer for MakeCode Arcade, CircuitPython or Arduino](https://www.adafruit.com/product/4242) What fits in your pocket, is fully Open Source, and can run CircuitPython, MakeCode Arcade or Arduino games you write yourself? That's right, it's the **Adafruit PyGamer!** We wanted to make an entry-level gaming handheld for DIY gaming, and maybe a little... Out of Stock [Buy Now](https://www.adafruit.com/product/4242) [Related Guides to the Product](https://learn.adafruit.com/products/4242/guides) ![Angled shot of Adafruit PyGamer for MakeCode Arcade, CircuitPython or Arduino.](https://cdn-shop.adafruit.com/640x480/4242-00.jpg) ### Adafruit PyBadge for MakeCode Arcade, CircuitPython, or Arduino [Adafruit PyBadge for MakeCode Arcade, CircuitPython, or Arduino](https://www.adafruit.com/product/4200) What's the size of a credit card and can run CircuitPython, MakeCode Arcade or Arduino? That's right, its the **Adafruit PyBadge!** We wanted to see how much we could cram into a ​3 3⁄8 × ​2 1⁄8 inch rounded rectangle, to make an all-in-one dev board with... Out of Stock [Buy Now](https://www.adafruit.com/product/4200) [Related Guides to the Product](https://learn.adafruit.com/products/4200/guides) ![Angled shot of a Adafruit PyBadge for MakeCode Arcade, CircuitPython, or Arduino. ](https://cdn-shop.adafruit.com/640x480/4200-01.jpg) Another very popular option is the Adafruit Feather M4 Express. ### Adafruit Feather M4 Express - Featuring ATSAMD51 [Adafruit Feather M4 Express - Featuring ATSAMD51](https://www.adafruit.com/product/3857) It's what you've been waiting for, the Feather M4 Express featuring ATSAMD51. This Feather is fast like a swift, smart like an owl, strong like a ox-bird (it's half ox, half bird, OK?) This feather is powered by our new favorite chip, the **ATSAMD51J19** -  with... In Stock [Buy Now](https://www.adafruit.com/product/3857) [Related Guides to the Product](https://learn.adafruit.com/products/3857/guides) ![Angled shot of a Adafruit Feather M4 Express. ](https://cdn-shop.adafruit.com/640x480/3857-10.jpg) If you would like something in between, you can go with the Adafruit Metro M4 Express. ### Adafruit Metro M4 feat. Microchip ATSAMD51 [Adafruit Metro M4 feat. Microchip ATSAMD51](https://www.adafruit.com/product/3382) Are you ready? Really ready? Cause here comes the fastest, most powerful Metro ever. The **Adafruit Metro M4** featuring the **Microchip ATSAMD51**. This Metro is like a bullet train, with its 120MHz Cortex M4 with floating point support. Your code will zig and zag... In Stock [Buy Now](https://www.adafruit.com/product/3382) [Related Guides to the Product](https://learn.adafruit.com/products/3382/guides) ![Angled shot of a Adafruit Metro M4 feat. Microchip ATSAMD51. ](https://cdn-shop.adafruit.com/640x480/3382-13.jpg) If you need a Metro M4 that can also do WiFi, you may like the Adafruit Metro M4 Express Airlift Lite. ### Adafruit Metro M4 Express AirLift (WiFi) - Lite [Adafruit Metro M4 Express AirLift (WiFi) - Lite](https://www.adafruit.com/product/4000) Give your next project a lift with _AirLift_ - our witty name for the ESP32 co-processor that graces this Metro M4. You already know about the  **Adafruit Metro M4**  featuring the  **Microchip ATSAMD51** , with it's 120MHz Cortex M4 with... In Stock [Buy Now](https://www.adafruit.com/product/4000) [Related Guides to the Product](https://learn.adafruit.com/products/4000/guides) ![Adafruit Metro M4 Airlift Lite dev board with SAMD51 an ESP32 Wifi Co-processor.](https://cdn-shop.adafruit.com/640x480/4000-08.jpg) - [Next Page](https://learn.adafruit.com/keep-your-circuitpython-libraries-on-devices-up-to-date-with-circup/prepare.md) ## Featured Products ### Adafruit Grand Central M4 Express featuring the SAMD51 [Adafruit Grand Central M4 Express featuring the SAMD51](https://www.adafruit.com/product/4064) Are you ready? Really ready? Cause here comes the **Adafruit Grand Central** featuring the **Microchip ATSAMD51**. This dev board is so big, it's not named after a Metro train, it's a whole freakin' _station_! This board is like a freight... In Stock [Buy Now](https://www.adafruit.com/product/4064) [Related Guides to the Product](https://learn.adafruit.com/products/4064/guides) ### Adafruit Grand Central M4 Express featuring SAMD51 [Adafruit Grand Central M4 Express featuring SAMD51](https://www.adafruit.com/product/4084) Are you ready? Really ready? Cause here comes the **Adafruit Grand Central** featuring the **Microchip ATSAMD51**. This dev board is so big, it's not named after a Metro train, it's a whole freakin' _station_! This board is like a freight... In Stock [Buy Now](https://www.adafruit.com/product/4084) [Related Guides to the Product](https://learn.adafruit.com/products/4084/guides) ### Adafruit PyPortal - CircuitPython Powered Internet Display [Adafruit PyPortal - CircuitPython Powered Internet Display](https://www.adafruit.com/product/4116) **PyPortal** , our easy-to-use IoT device that allows you to create all the things for the “Internet of Things” in minutes. Make custom touch screen interface GUIs, all open-source, and Python-powered using tinyJSON / APIs to get news, stock, weather, cat photos,... Out of Stock [Buy Now](https://www.adafruit.com/product/4116) [Related Guides to the Product](https://learn.adafruit.com/products/4116/guides) ### Adafruit PyGamer for MakeCode Arcade, CircuitPython or Arduino [Adafruit PyGamer for MakeCode Arcade, CircuitPython or Arduino](https://www.adafruit.com/product/4242) What fits in your pocket, is fully Open Source, and can run CircuitPython, MakeCode Arcade or Arduino games you write yourself? That's right, it's the **Adafruit PyGamer!** We wanted to make an entry-level gaming handheld for DIY gaming, and maybe a little... Out of Stock [Buy Now](https://www.adafruit.com/product/4242) [Related Guides to the Product](https://learn.adafruit.com/products/4242/guides) ### Adafruit PyBadge for MakeCode Arcade, CircuitPython, or Arduino [Adafruit PyBadge for MakeCode Arcade, CircuitPython, or Arduino](https://www.adafruit.com/product/4200) What's the size of a credit card and can run CircuitPython, MakeCode Arcade or Arduino? That's right, its the **Adafruit PyBadge!** We wanted to see how much we could cram into a ​3 3⁄8 × ​2 1⁄8 inch rounded rectangle, to make an all-in-one dev board with... Out of Stock [Buy Now](https://www.adafruit.com/product/4200) [Related Guides to the Product](https://learn.adafruit.com/products/4200/guides) ### Adafruit Feather M4 Express - Featuring ATSAMD51 [Adafruit Feather M4 Express - Featuring ATSAMD51](https://www.adafruit.com/product/3857) It's what you've been waiting for, the Feather M4 Express featuring ATSAMD51. This Feather is fast like a swift, smart like an owl, strong like a ox-bird (it's half ox, half bird, OK?) This feather is powered by our new favorite chip, the **ATSAMD51J19** -  with... In Stock [Buy Now](https://www.adafruit.com/product/3857) [Related Guides to the Product](https://learn.adafruit.com/products/3857/guides) ### Adafruit Metro M4 feat. Microchip ATSAMD51 [Adafruit Metro M4 feat. Microchip ATSAMD51](https://www.adafruit.com/product/3382) Are you ready? Really ready? Cause here comes the fastest, most powerful Metro ever. The **Adafruit Metro M4** featuring the **Microchip ATSAMD51**. This Metro is like a bullet train, with its 120MHz Cortex M4 with floating point support. Your code will zig and zag... In Stock [Buy Now](https://www.adafruit.com/product/3382) [Related Guides to the Product](https://learn.adafruit.com/products/3382/guides) ### Adafruit Metro M4 Express AirLift (WiFi) - Lite [Adafruit Metro M4 Express AirLift (WiFi) - Lite](https://www.adafruit.com/product/4000) Give your next project a lift with _AirLift_ - our witty name for the ESP32 co-processor that graces this Metro M4. You already know about the  **Adafruit Metro M4**  featuring the  **Microchip ATSAMD51** , with it's 120MHz Cortex M4 with... In Stock [Buy Now](https://www.adafruit.com/product/4000) [Related Guides to the Product](https://learn.adafruit.com/products/4000/guides) ## Related Guides - [Adafruit Metro M4 Express featuring ATSAMD51](https://learn.adafruit.com/adafruit-metro-m4-express-featuring-atsamd51.md) - [Adafruit Feather M4 Express](https://learn.adafruit.com/adafruit-feather-m4-express-atsamd51.md) - [Introducing the Adafruit Grand Central M4 Express](https://learn.adafruit.com/adafruit-grand-central.md) - [Adafruit PyPortal - IoT for CircuitPython](https://learn.adafruit.com/adafruit-pyportal.md) - [Adafruit Metro M4 Express AirLift (WiFi)](https://learn.adafruit.com/adafruit-metro-m4-express-airlift-wifi.md) - [Adafruit PyBadge and PyBadge LC](https://learn.adafruit.com/adafruit-pybadge.md) - [Introducing Adafruit PyGamer](https://learn.adafruit.com/adafruit-pygamer.md) - [Ocean Epoxy Resin Lightbox with RGB LED Matrix Image Scroller](https://learn.adafruit.com/ocean-epoxy-resin-lightbox-with-rgb-led-matrix-image-scroller.md) - [PyPortal Roku Remote](https://learn.adafruit.com/pyportal-roku-remote.md) - [Control Electronics with your Brain using NextMind](https://learn.adafruit.com/control-electronics-with-your-brain-using-nextmind.md) - [Tiny Autostereogram Construction Kit](https://learn.adafruit.com/tiny-autostereogram-construction-kit.md) - [Creating Your First Tilemap Game with CircuitPython](https://learn.adafruit.com/creating-your-first-tilemap-game-with-circuitpython.md) - [Computer Space Mini Arcade](https://learn.adafruit.com/computer-space-mini-arcade.md) - [PyPortal View Master](https://learn.adafruit.com/pyportal-view-master.md) - [Arcada Animated GIF Display](https://learn.adafruit.com/pyportal-animated-gif-display.md) - [Building CircuitPython](https://learn.adafruit.com/building-circuitpython.md) - [NeoTrellis Sound Board](https://learn.adafruit.com/neotrellis-soundboard.md) - [Make It Talk](https://learn.adafruit.com/make-it-talk.md) - [CircuitPython displayio Setup for TFT FeatherWings](https://learn.adafruit.com/using-circuitpython-displayio-with-a-tft-featherwing.md) - [Ambient Color Control Pad](https://learn.adafruit.com/ambient-color-controller.md) - [PyPortal Weather Station](https://learn.adafruit.com/pyportal-weather-station.md)