# Data Logging IoT Weight Scale
## Overview
_How many grams of coffee did I add to my pour-over?_
_Is the bag of cat food empty?_
_Did I remember to water the plant? _
_What's the weight of these screws in my workshop?_
To answer these questions (and more), you're going to **build an internet-enabled scale to track weight data over a period of time**.
To do this, you'll be performing a bit of **hardware hacking** - **tearing down a DYMO Postage scale** and soldering wires to connect it to a PyPortal. Then, you'll **add some CircuitPython code** to the PyPortal which allows you to **read the the scale remotely using [Adafruit](http://io.adafruit.com)**[IO](http://io.adafruit.com) - our easy-to-use internet of things service.
This scale is _not just for keeping track of your coffee_ - **you can can monitor anything!** Here are some examples:
- Place a bag of cat food on the scale and enable Adafruit IO Feed Email Notifications for when you run out of cat food.
- Science experiments - no need to watch and chart a scale's weight - let Adafruit IO do that for you with automatic graph visualizations!
- Are you a beekeeper? Track the weight of a honeycomb and have Adafruit IO notify you when it exceeds a certain weight.
This is **an introduction to hacking and controlling consumer off-the-shelf electronics with CircuitPython**. To perform this guide, you'll need some soldering experience and willingness to tear down a consumer product your purchased.
## **Adafruit IO**
**[Adafruit IO is the easiest way to stream, log, and interact with your data](https://io.adafruit.com).** It's built from the ground up to be easy to use - we do the hard stuff so you can focus on the fun stuff.
Data such as temperature and light levels can be hard to visualize and quantify - Adafruit IO makes it simple. Send IO your data and it can store and display it using charts, graphs, gauges, and more!
## CircuitPython Code
**CircuitPython is great for building Internet-of-Things projects.** Using the [Adafruit IO CircuitPython module](https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO), you can easily send data to Adafruit IO, receive data from Adafruit IO, and easily manipulate data with the powerful Adafruit IO API.
We've also built a [DymoScale module for CircuitPython](https://github.com/brentru/Adafruit_CircuitPython_DymoScale) to make interfacing with these scales incredibly easy.
You can rapidly update your code without having to compile and store WiFi and API secret keys on the device. This means that there's no editing code and re-uploading whenever you move the PyPortal to another network - just update a file and you're set.
## Parts
Danger:
To use this guide, you'll need a [DYMO scale](http://www.dymo.com/en-US). We've tested this guide with [DYMO M25](https://www.dymo.com/scales/dymo-m25-digital-postal-scale-25-pound-capacity/SAP_1772059.html) and a [DYMO M10](https://www.dymo.com/scales/dymo-m10-digital-postal-scale-10-pound-capacity/SAP_1772057.html).
**Note:** There are differences between the two scale models we tested (the **CircuitPython\_DymoScale** library handles this for you, you can use either). If you choose to use another DYMO mode with this guide, be warned that we have _not_ tested other DYMO scales with this library and your scale may not work with our library.
### 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)
## Materials
You'll need the following materials to complete this guide. If you do not have them handy, consider picking them up from Adafruit:
### Part: Soldering Station
quantity: 1
Digital Genuine Hakko FX-888D
[Soldering Station](https://www.adafruit.com/product/1204)
### Part: Solder Spool
quantity: 1
Solder Wire - 60/40 Rosin Core
[Solder Spool](https://www.adafruit.com/product/1886)
### Part: Wire Strippers
quantity: 1
Hakko Professional Quality 20-30 AWG Wire Strippers - CSP-30-1
[Wire Strippers](https://www.adafruit.com/product/527)
### Part: Spudger
quantity: 1
Spudger - Double Sided Prying Tool
[Spudger](https://www.adafruit.com/product/3434)
### Part: Screwdriver
quantity: 1
Adafruit Pocket Screwdriver
[Screwdriver](https://www.adafruit.com/product/3284)
### Part: USB Cable
quantity: 1
USB cable - USB A to Micro-B - 3 foot long
[USB Cable](https://www.adafruit.com/product/592)
- [Next Page](https://learn.adafruit.com/data-logging-iot-weight-scale/install-circuitpython.md)
## Featured Products
### 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)
### STEMMA JST PH 2mm 3-Pin to Male Header Cable - 200mm
[STEMMA JST PH 2mm 3-Pin to Male Header Cable - 200mm](https://www.adafruit.com/product/3893)
This cable will let you turn a JST PH 3-pin cable port into 3 individual wires with high-quality 0.1" male header plugs on the end. We're carrying these to match up with our Hallowing, for extending and connecting sensors or LEDs - and the wires are even color coded!
In Stock
[Buy Now](https://www.adafruit.com/product/3893)
[Related Guides to the Product](https://learn.adafruit.com/products/3893/guides)
### Adafruit Pocket Screwdriver - Black
[Adafruit Pocket Screwdriver - Black](https://www.adafruit.com/product/3284)
Have you ever been in a situation where you desperately needed a screwdriver _right away_? Now you can have one at-the-ready all the time — enter the **Adafruit Pocket Screwdriver**!
OK, it's a little tough to write exciting copy for a pocket...
In Stock
[Buy Now](https://www.adafruit.com/product/3284)
[Related Guides to the Product](https://learn.adafruit.com/products/3284/guides)
### Spudger - Double Sided Prying Tool
[Spudger - Double Sided Prying Tool](https://www.adafruit.com/product/3434)
Is there something missing from your tool kit or workstation? Are you having trouble figuring out which elusive tool it is that you're lacking? Perhaps it's a spudger! "A what?" A **s-p-u-d-g-e-r**! It's a prying tool that has a wide...
In Stock
[Buy Now](https://www.adafruit.com/product/3434)
[Related Guides to the Product](https://learn.adafruit.com/products/3434/guides)
### Hakko Professional Quality 20-30 AWG Wire Strippers
[Hakko Professional Quality 20-30 AWG Wire Strippers](https://www.adafruit.com/product/527)
These are the finest wire strippers we have used, and if you have to do a lot of wiring, you will agree! They have soft rounded grips - very comfortable to use, and precision ground notches that do a perfect job every time. No more yanking or twisting to strip wires cleanly and quickly.
In Stock
[Buy Now](https://www.adafruit.com/product/527)
[Related Guides to the Product](https://learn.adafruit.com/products/527/guides)
### Digital Genuine Hakko FX888DX-010SV (936 upgrade)
[Digital Genuine Hakko FX888DX-010SV (936 upgrade)](https://www.adafruit.com/product/1204)
Known by engineers for making excellent quality tools & soldering irons! This is a genuine Hakko FX-888D with **digital temperature control**! We worked hard to get the best and a great price, these are **not** knock-offs. This iron is an upgrade to the...
No Longer Stocked
[Buy Now](https://www.adafruit.com/product/1204)
[Related Guides to the Product](https://learn.adafruit.com/products/1204/guides)
### Solder Wire - 60/40 Rosin Core - 0.5mm/0.02" diameter - 50 grams
[Solder Wire - 60/40 Rosin Core - 0.5mm/0.02" diameter - 50 grams](https://www.adafruit.com/product/1886)
If you want to make a kit you'll need some solder. This 0.1 lb (about 50 grams) spool is a good amount, not too much (like 1 lb spools) and not too little (like those little 'pocket clip' vials).
This spool of solder contains approximately 0.6mm / .02" diameter in...
Out of Stock
[Buy Now](https://www.adafruit.com/product/1886)
[Related Guides to the Product](https://learn.adafruit.com/products/1886/guides)
### USB cable - USB A to Micro-B
[USB cable - USB A to Micro-B](https://www.adafruit.com/product/592)
This here is your standard A to micro-B USB cable, for USB 1.1 or 2.0. Perfect for connecting a PC to your Metro, Feather, Raspberry Pi or other dev-board or microcontroller
Approximately 3 feet / 1 meter long
In Stock
[Buy Now](https://www.adafruit.com/product/592)
[Related Guides to the Product](https://learn.adafruit.com/products/592/guides)
## Related Guides
- [Adafruit PyPortal - IoT for CircuitPython](https://learn.adafruit.com/adafruit-pyportal.md)
- [Melting Picture Frame for PyPortal IoT images](https://learn.adafruit.com/pyportal-art-display.md)
- [Where's My Friend? A Location-Aware Display with PyPortal and ItsASnap](https://learn.adafruit.com/where-s-my-friend-a-location-display-frame-with-pyportal.md)
- [PyPortal ISS Tracker](https://learn.adafruit.com/pyportal-iss-tracker.md)
- [Simple Vertical Wordclock](https://learn.adafruit.com/vertical-wordclock.md)
- [CircuitPython Day 2020 Countdown Clock](https://learn.adafruit.com/circuitpython-day-2020-countdown-clock.md)
- [PyPortal 2FA TOTP Authentication Friend](https://learn.adafruit.com/pyportal-2fa-totp-authentication-friend.md)
- [PyPortal YouTube Views and Subscribers Display](https://learn.adafruit.com/pyportal-youtube-views-and-subscribers-display.md)
- [PyPortal Calculator using the Displayio UI Elements](https://learn.adafruit.com/pyportal-calculator-using-the-displayio-ui-elements.md)
- [PyPortal IoT Data Logger with Analog Devices ADT7410, Adafruit IO and CircuitPython](https://learn.adafruit.com/iot-pyportal-data-logger-adafruitio-circuitpython.md)
- [IoT Power Outlet with CircuitPython and Adafruit IO](https://learn.adafruit.com/adafruit-io-a-c-power-relay.md)
- [Use circup to easily keep your CircuitPython libraries up to date](https://learn.adafruit.com/keep-your-circuitpython-libraries-on-devices-up-to-date-with-circup.md)
- [Smart Mirror with PyPortal](https://learn.adafruit.com/smart-mirror-with-pyportal.md)
- [AdaBox 011](https://learn.adafruit.com/adabox011.md)
- [PyPortal Email Display with Zapier and Adafruit IO](https://learn.adafruit.com/pyportal-email-display.md)
- [A Logger for CircuitPython](https://learn.adafruit.com/a-logger-for-circuitpython.md)