Original Gravity: Analog Rotation Potentiometer Sensor for Arduino – Rotation 4550?? – PartsCountry

Description

The SQFMI Watchy is a fully open-source, hackable ePaper watch based on the ESP32 with a crisp, glare-free 1.54″ 200×200 ePaper display which can be programmed using the Arduino IDE and lots of your favourite Arduino/ESP libraries!

Watchy has built-in WiFi and Bluetooth via the ESP32-PICO-D4 microcontroller, a 3-axis accelerometer, real-time clock, vibration motor, four tactile buttons, Micro-USB port with a built-in USB-serial adapter and a LiPo connector for the included LiPo battery. All you need is a computer, coffee and a Micro-USB cable!

In the box, you’ll find the main Watchy PCB, ePaper display, LiPo battery, injection-moulded case, watch strap (two parts) and a strip of double-sided tape.

Lots of example software is available along with many community examples. Resources are dotted around the internet, so we’ve collated all the useful links you’ll need below in the resources section (you’re welcome). We’d really recommend jumping on the Watchy Discord server for discussion and assistance (don’t be lazy, use the search function – it helped us loads!).

We’re shipping the latest V2 version because we’re only about the new things. Keep your VHS and MiniDisc player, we want no part of it!

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Lithium Battery Shipping: Due to courier restrictions, this product can only be shipped within some countries. With this item in your cart your shipping options will be limited and may cost more than our usual rates. Why?

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Who is Watchy for?

Someone on the Watchy Discord quite accurately stated “Watchy should be considered a development platform first, and a watch second”…

After using a Watchy ourselves for the past few weeks, we think you’ll get the most out of Watchy if you’re already familiar with the Arduino IDE, C/C++ programming and related concepts, allowing you to pick up and understand the example code easily and start customising.

If you haven’t used the Arduino IDE before and/or are new to coding, you might struggle (you’re probably better off starting with an Arduino starter kit). That being said, if you just want a watch with hardcore geek appeal and are happy to use the standard code without changing it, that’s fine too – charge it, tweak a couple of bits, use it and look damn cool!

Assembly is required!

Our tips before you dive in

• Be CAREFUL with the display, especially when fitting to a case
  • Don’t apply pressure on it with your huge human hands, it’s glass don’t you know!
• Charge the watch fully before starting
• If you’re using Windows you might need to install CP drivers before Watchy will be recognised
• Bluetooth OTA updates aren’t working but there are other ways – just ignore that menu item
• You’ll need to edit the code to set the right network time. A handy list of UTC offsets can be found here for that task
• Fitting the buttons to the case with the watch is fiddly but these things are sent to test us. We believe in you. You can do it!
• We’re shipping the latest V2 version. You may Google some things which relate to the V1/V1.5 which had slightly different hardware. Just be aware.

OMG Watchy Accessories!

We’re stocking lots of superb SQFMI Watchy accessories allowing you to look even cooler than the person next to you who is also wearing a Watchy (it’s rare but it might happen…). It’s ruthless watchy oneupmanship and we don’t want you looking second best, OK?

• Olive Green Velco Strap
• Clear Yatari 2.0 ABS case
• Red GB Aluminium case
• Gunmetal Almadilonium Aluminium case
• Black Invader aluminium case
• Black Slim Cube aluminium case

Resources

Here’s a big bucket of links in no particular order that we found whilst playing with the Watchy. It was a journey. Grab your beverage of choice and spend some time looking through these, then thank us later…

Tip: When Googling late into the night for Watchy stuff, be aware that there was an earlier version of Watchy with different hardware. We’re shipping the latest V2.

Helpful Links

• Watchy Documentation site (Including Getting Started guide)
• SQFMI GitHub
  • Watchy Repository
• Watchy Wiki
  • Timezones, NTP, and time
  • Alternate Frameworks and Projects
  • Locations
  • Fonts, Images, and text
  • Spare parts and alternative parts
  • Screenshots of Watchfaces
• Watchfaces
• Watchy Discord

Handy Stuff

More helpful links, but not quite as helpfully-helpful as the helpful links above…

• List of UTC offsets for sorting out your timezone in the code
  • This website does a good job of explaining how offsets work
• Openweathermap – use this to find and set your area for weather updates in the code
  • You need to register and grab your own API key, it’s free
  • The current Watchy code uses the ‘old’ API method, but it still works
• Silicon Labs CP210x Windows Drivers (you might need these if your Watchy isn’t recognised by your PC)
• A Watchy gallery that isn’t updated very often – good for inspiration
• Font converter, because the first thing we all do is change the font
• Schematic
• Pin Map
• SQFMI Socials
  • Twitter
  • Instagram
  • YouTube

Datasheets

Sheets full of lovely data:

• Microcontroller ESP32-PICO-D4
• USB-Serial CP2104
• E-Paper Display GDEH0154D67
• Display Connector AFC07-S24ECC-00
• 3-Axis Accelerometer BMA423
• Real-Time Clock v1.5/2.0 PCF8563
• Battery LiPo Battery 3.7V 200mAh 402030
• LDO Voltage Regulator ME6211C33M5G-N
• Battery Connector BOOMELE 1.25T-2PWT
• Micro USB Connector U-F-M5DD-Y-L
• Tactile Buttons K2-1114SA-A4SW-06
• Vibration Motor 1020
• PCB Antenna SWRA117D

Specifications

Display	1.54″ 200×200 E-Ink
Processor	ESP32-PICO-D4
Connectivity	Wi-Fi and Bluetooth
Programming Interface	Built-in USB-serial
Tactile Buttons	4
Touch Panel	None
Sensors	Accelerometer
RAM	520 KB
FLASH	4 MB
Battery	200 mAh
Weight	18 g
Thickness	9 mm
Width	34 mm
Length	46 mm
Waterproof	No
Open Source	HW+SW+3D
OSHWA Certified	Yes
Design Files Available	All
3D-printable Watch Cases	Yes

Package Contents

• 1x Watchy PCB
• 1x 200mAh 3.7V LiPo battery
• 1x Watchy injection-moulded case (black)
• 1x Black strap (in two parts)
• 1x ePaper display (200×200)
• 1x Double-sided tape