# MagTag Tides Viewer ## Overview ![](https://cdn-learn.adafruit.com/assets/assets/000/097/408/medium800/wireless_banner2.jpg?1607034330) Tides are a fun thing to track if you live near the ocean. The information is even useful for any activity that is tide dependent, like surfing, boating, or just plain swimming. This guide will show you how to use an [Adafruit MagTag](https://www.adafruit.com/product/4800) to fetch and display daily tide information. It will show the times for the high and low events for the day as well as a neat little plot. [CircuitPython](https://learn.adafruit.com/welcome-to-circuitpython) is used for the code and the MagTag library takes care of most of the heavy lifting. Just change the code to set your local tide [station ID](https://tidesandcurrents.noaa.gov/), and you are good to go. After updating, the MagTag goes into a deep sleep until 3 am the next morning, so it can stay on your fridge for a few weeks between recharges. ## Parts Here are the parts you'll need for this project. You can get them individually: ### Adafruit MagTag - 2.9" Grayscale E-Ink WiFi Display [Adafruit MagTag - 2.9" Grayscale E-Ink WiFi Display](https://www.adafruit.com/product/4800) The Adafruit MagTag combines the ESP32-S2 wireless module and a 2.9" grayscale E-Ink display to make a low-power IoT display that can show data on its screen even when power is removed! The ESP32-S2 is great because it builds on the years of code and support for the ESP32 and also adds... In Stock [Buy Now](https://www.adafruit.com/product/4800) [Related Guides to the Product](https://learn.adafruit.com/products/4800/guides) ![Angled shot of rectangle-shaped electronic ink display breakout with the text: "MAGTAG 2025 Edition with SSD1680 Chipset"](https://cdn-shop.adafruit.com/640x480/4800-10.jpg) ### Lithium Ion Polymer Battery with Short Cable - 3.7V 420mAh [Lithium Ion Polymer Battery with Short Cable - 3.7V 420mAh](https://www.adafruit.com/product/4236) 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 420mAh for a total of about 1.55 Wh. If you need a larger (or smaller!) battery, In Stock [Buy Now](https://www.adafruit.com/product/4236) [Related Guides to the Product](https://learn.adafruit.com/products/4236/guides) ![Lithium Ion Polymer Battery 3.7v 420mAh with JST 2-PH connector and short cable](https://cdn-shop.adafruit.com/640x480/4236-04.jpg) ### Mini Magnet Feet for RGB LED Matrices (Pack of 4) [Mini Magnet Feet for RGB LED Matrices (Pack of 4)](https://www.adafruit.com/product/4631) Got a glorious RGB Matrix project you want to mount and display in your workspace or home? If you have one of the matrix panels listed below, you'll need a pack of these **Mini-Magnet Feet.**  We got these specifically for our RGB LED Matrices, which no longer... In Stock [Buy Now](https://www.adafruit.com/product/4631) [Related Guides to the Product](https://learn.adafruit.com/products/4631/guides) ![Angled shot of four magnet feet.](https://cdn-shop.adafruit.com/640x480/4631-00.jpg) **OR** these items are also available together as a kit: ### Adafruit MagTag Starter Kit - ADABOX017 Essentials [Adafruit MagTag Starter Kit - ADABOX017 Essentials](https://www.adafruit.com/product/4819) The **Adafruit MagTag** combines the new ESP32-S2 wireless module and a 2.9" grayscale E-Ink display to make a low-power IoT display that can show data on its screen even when power is removed! The ESP32-S2 is great because it builds on the years of code and support for the... Out of Stock [Buy Now](https://www.adafruit.com/product/4819) [Related Guides to the Product](https://learn.adafruit.com/products/4819/guides) ![MagTag dev board with enclosure pieces, four magnet feet, and lipoly battery](https://cdn-shop.adafruit.com/640x480/4819-02.jpg) - [Next Page](https://learn.adafruit.com/magtag-tides-viewer/circuitpython.md) ## Featured Products ### Adafruit MagTag - 2.9" Grayscale E-Ink WiFi Display [Adafruit MagTag - 2.9" Grayscale E-Ink WiFi Display](https://www.adafruit.com/product/4800) The Adafruit MagTag combines the ESP32-S2 wireless module and a 2.9" grayscale E-Ink display to make a low-power IoT display that can show data on its screen even when power is removed! The ESP32-S2 is great because it builds on the years of code and support for the ESP32 and also adds... In Stock [Buy Now](https://www.adafruit.com/product/4800) [Related Guides to the Product](https://learn.adafruit.com/products/4800/guides) ### Adafruit MagTag Starter Kit - ADABOX017 Essentials [Adafruit MagTag Starter Kit - ADABOX017 Essentials](https://www.adafruit.com/product/4819) The **Adafruit MagTag** combines the new ESP32-S2 wireless module and a 2.9" grayscale E-Ink display to make a low-power IoT display that can show data on its screen even when power is removed! The ESP32-S2 is great because it builds on the years of code and support for the... Out of Stock [Buy Now](https://www.adafruit.com/product/4819) [Related Guides to the Product](https://learn.adafruit.com/products/4819/guides) ## Related Guides - [Adafruit MagTag](https://learn.adafruit.com/adafruit-magtag.md) - [Deep Sleep with CircuitPython](https://learn.adafruit.com/deep-sleep-with-circuitpython.md) - [Google Graveyard with Adafruit MagTag](https://learn.adafruit.com/google-graveyard-with-adafruit-magtag.md) - [MagTag Case](https://learn.adafruit.com/magtag-case.md) - [Adafruit MagTag COVID Vaccination Percent Tracker](https://learn.adafruit.com/adafruit-magtag-covid-vaccination-percent-tracker.md) - [MagTag Slideshow](https://learn.adafruit.com/magtag-slideshow.md) - [50 Cent CPI Tracker for MagTag](https://learn.adafruit.com/50-cent-cpi-tracker-for-magtag.md) - [OSHWA Project Display With Adafruit MagTag](https://learn.adafruit.com/oshwa-project-display-with-adafruit-magtag.md) - [No-Code MagTag Every Day Goal Tracker](https://learn.adafruit.com/no-code-magtag-every-day-goal-tracker.md) - [Adafruit MagTag Project Selector](https://learn.adafruit.com/adafruit-magtag-project-selector.md) - [ Memory-saving tips for CircuitPython](https://learn.adafruit.com/memory-saving-tips-for-circuitpython.md) - [MagTag AR Tarot Card Reading](https://learn.adafruit.com/magtag-tarot-cards.md) - [Cheerlights Holiday Wreath with Animations](https://learn.adafruit.com/cheerlights-led-animations.md) - [Language Flashcards on the MagTag](https://learn.adafruit.com/magtag-flashcards.md) - [Making oscilloscope images with DACs](https://learn.adafruit.com/dac-oscilloscope-images.md) - [Soundboard Speaker for Bikes & Scooters](https://learn.adafruit.com/soundboard-speaker-for-bikes-scooters.md)