# QT Py CH32V203 eInk / ePaper Daily Calendar and Clock
## Overview
Love daily calendars but cringe at the 365 pages of paper waste? This project lets you have a smol electronic version. You'll use a CH32V203 QT Py with an EYESPI BFF to display the date and time on an eInk display. The time is kept with a DS3231 STEMMA real-time clock breakout. Even though the CH32V203 QT Py is for more advanced users, it still plays well with the BFF breakout buddies.
The 3D printed stand has a little hook that lets you sandwich the QT Py and the BFF so that they are secured behind the display.
## About the CH32V203 QT Py
The CH32V203 QT Py features the powerful CH32V203 low-cost processor that's all the trend: based on RISC-V and cheaper than an 8-bit core! However, it is best used by folks comfortable with having to use Makefiles, clone git repositories, edit configuration files, etc., re. not great for beginners. If none of this scares you though, check out the Learn Guide before heading into this project to get a little more familiar with the ins and outs of this tiny but mighty board.
### Adafruit QT Py CH32V203 - Overview
[Adafruit QT Py CH32V203](https://learn.adafruit.com/adafruit-qt-py-ch32v203)
[Overview](https://learn.adafruit.com/adafruit-qt-py-ch32v203/overview)
## Parts
### Adafruit QT Py CH32V203 Dev Board with STEMMA QT
[Adafruit QT Py CH32V203 Dev Board with STEMMA QT](https://www.adafruit.com/product/5996)
What a cutie pie! Or is it... a QT Py? This diminutive dev board features the powerful CH32V203 low-cost processor that's all the trend: based on RISC-V and cheaper than an 8-bit core! This little one is a great way to get started in the CH32x processor family, with everything you...
In Stock
[Buy Now](https://www.adafruit.com/product/5996)
[Related Guides to the Product](https://learn.adafruit.com/products/5996/guides)
### Adafruit EYESPI BFF for QT Py or Xiao - 18 Pin FPC Connector
[Adafruit EYESPI BFF for QT Py or Xiao - 18 Pin FPC Connector](https://www.adafruit.com/product/5772)
Our QT Py boards are a great way to make very small microcontroller projects that pack a ton of power - and now we have a way for you to add a small, colorful, and bright display to any project.
Our most recent [display...](https://www.adafruit.com/?q=eyespi&sort=BestMatch)
In Stock
[Buy Now](https://www.adafruit.com/product/5772)
[Related Guides to the Product](https://learn.adafruit.com/products/5772/guides)
### Adafruit 1.54" Monochrome eInk / ePaper Display with SRAM
[Adafruit 1.54" Monochrome eInk / ePaper Display with SRAM](https://www.adafruit.com/product/4196)
Easy e-paper finally comes to microcontrollers, with this breakout that's designed to make it a breeze to add an eInk display. Chances are you've seen one of those new-fangled 'e-readers' like the Kindle or Nook. They have gigantic electronic paper 'static' displays -...
Out of Stock
[Buy Now](https://www.adafruit.com/product/4196)
[Related Guides to the Product](https://learn.adafruit.com/products/4196/guides)
### Adafruit DS3231 Precision RTC - STEMMA QT
[Adafruit DS3231 Precision RTC - STEMMA QT](https://www.adafruit.com/product/5188)
The datasheet for the **DS3231** explains that this part is an "Extremely Accurate I²C-Integrated RTC/TCXO/Crystal". And, hey, it does exactly what it says on the tin! This **Real Time Clock (RTC)** is the most precise you can get in a...
Out of Stock
[Buy Now](https://www.adafruit.com/product/5188)
[Related Guides to the Product](https://learn.adafruit.com/products/5188/guides)
### EYESPI Cable - 18 Pin 100mm long Flex PCB (FPC) A-B type
[EYESPI Cable - 18 Pin 100mm long Flex PCB (FPC) A-B type](https://www.adafruit.com/product/5239)
Connect this to that when a 18-pin FPC connector is needed. This 25 cm long cable is made of a flexible PCB. It's A-B style which means that pin one on one side will match with pin one on the other side. How handy!
In Stock
[Buy Now](https://www.adafruit.com/product/5239)
[Related Guides to the Product](https://learn.adafruit.com/products/5239/guides)
### STEMMA QT / Qwiic JST SH 4-Pin Cable - 50mm Long
[STEMMA QT / Qwiic JST SH 4-Pin Cable - 50mm Long](https://www.adafruit.com/product/4399)
This 4-wire cable is 50mm / 1.9" long and fitted with JST SH female 4-pin connectors on both ends. Compared with the chunkier JST PH these are 1mm pitch instead of 2mm, but still have a nice latching feel, while being easy to insert and remove.
Out of Stock
[Buy Now](https://www.adafruit.com/product/4399)
[Related Guides to the Product](https://learn.adafruit.com/products/4399/guides)
### Part: USB C Cable
quantity: 1
USB A to USB C Cable - 1 meter long
[USB C Cable](https://www.adafruit.com/product/5153)
### Part: M2.5 Screws
quantity: 1
Screw and Stand-off Set – M2.5 Thread
[M2.5 Screws](https://www.adafruit.com/product/3299)
### Part: Socket Headers
quantity: 1
20-pin 0.1" - Rainbow Color Mix - 5 pack
[Socket Headers](https://www.adafruit.com/product/4160)
### Part: Plug Headers
quantity: 1
Break-away 0.1" 36-pin - Rainbow Combo 10 Pack
[Plug Headers](https://www.adafruit.com/product/4154)
- [Next Page](https://learn.adafruit.com/ch32v203-eink-epaper-calendar-and-clock/circuit-diagram.md)
## Featured Products
### Adafruit QT Py CH32V203 Dev Board with STEMMA QT
[Adafruit QT Py CH32V203 Dev Board with STEMMA QT](https://www.adafruit.com/product/5996)
What a cutie pie! Or is it... a QT Py? This diminutive dev board features the powerful CH32V203 low-cost processor that's all the trend: based on RISC-V and cheaper than an 8-bit core! This little one is a great way to get started in the CH32x processor family, with everything you...
In Stock
[Buy Now](https://www.adafruit.com/product/5996)
[Related Guides to the Product](https://learn.adafruit.com/products/5996/guides)
### Adafruit EYESPI BFF for QT Py or Xiao - 18 Pin FPC Connector
[Adafruit EYESPI BFF for QT Py or Xiao - 18 Pin FPC Connector](https://www.adafruit.com/product/5772)
Our QT Py boards are a great way to make very small microcontroller projects that pack a ton of power - and now we have a way for you to add a small, colorful, and bright display to any project.
Our most recent [display...](https://www.adafruit.com/?q=eyespi&sort=BestMatch)
In Stock
[Buy Now](https://www.adafruit.com/product/5772)
[Related Guides to the Product](https://learn.adafruit.com/products/5772/guides)
### Adafruit 1.54" Monochrome eInk / ePaper Display with SRAM
[Adafruit 1.54" Monochrome eInk / ePaper Display with SRAM](https://www.adafruit.com/product/4196)
Easy e-paper finally comes to microcontrollers, with this breakout that's designed to make it a breeze to add an eInk display. Chances are you've seen one of those new-fangled 'e-readers' like the Kindle or Nook. They have gigantic electronic paper 'static' displays -...
Out of Stock
[Buy Now](https://www.adafruit.com/product/4196)
[Related Guides to the Product](https://learn.adafruit.com/products/4196/guides)
### Adafruit DS3231 Precision RTC - STEMMA QT
[Adafruit DS3231 Precision RTC - STEMMA QT](https://www.adafruit.com/product/5188)
The datasheet for the **DS3231** explains that this part is an "Extremely Accurate I²C-Integrated RTC/TCXO/Crystal". And, hey, it does exactly what it says on the tin! This **Real Time Clock (RTC)** is the most precise you can get in a...
Out of Stock
[Buy Now](https://www.adafruit.com/product/5188)
[Related Guides to the Product](https://learn.adafruit.com/products/5188/guides)
### EYESPI Cable - 18 Pin 100mm long Flex PCB (FPC) A-B type
[EYESPI Cable - 18 Pin 100mm long Flex PCB (FPC) A-B type](https://www.adafruit.com/product/5239)
Connect this to that when a 18-pin FPC connector is needed. This 25 cm long cable is made of a flexible PCB. It's A-B style which means that pin one on one side will match with pin one on the other side. How handy!
In Stock
[Buy Now](https://www.adafruit.com/product/5239)
[Related Guides to the Product](https://learn.adafruit.com/products/5239/guides)
### STEMMA QT / Qwiic JST SH 4-Pin Cable - 50mm Long
[STEMMA QT / Qwiic JST SH 4-Pin Cable - 50mm Long](https://www.adafruit.com/product/4399)
This 4-wire cable is 50mm / 1.9" long and fitted with JST SH female 4-pin connectors on both ends. Compared with the chunkier JST PH these are 1mm pitch instead of 2mm, but still have a nice latching feel, while being easy to insert and remove.
Out of Stock
[Buy Now](https://www.adafruit.com/product/4399)
[Related Guides to the Product](https://learn.adafruit.com/products/4399/guides)
### Pink and Purple Woven USB A to USB C Cable - 1 meter long
[Pink and Purple Woven USB A to USB C Cable - 1 meter long](https://www.adafruit.com/product/5153)
This cable is not only super-fashionable, with a woven pink and purple Blinka-like pattern, it's also made for USB C for our modernized breakout boards, Feathers, and more. [If you want something just like it but for Micro B, we...](https://www.adafruit.com/product/4111)
Out of Stock
[Buy Now](https://www.adafruit.com/product/5153)
[Related Guides to the Product](https://learn.adafruit.com/products/5153/guides)
### Black Nylon Machine Screw and Stand-off Set – M2.5 Thread
[Black Nylon Machine Screw and Stand-off Set – M2.5 Thread](https://www.adafruit.com/product/3299)
Totaling 380 pieces, this **M2.5 Screw Set** is a must-have for your workstation. You'll have enough screws, nuts, and hex standoffs to fuel your maker tendencies for days on end! M2.5 size screws fit almost all of the Adafruit breakout/dev board mounting holes...
In Stock
[Buy Now](https://www.adafruit.com/product/3299)
[Related Guides to the Product](https://learn.adafruit.com/products/3299/guides)
## Related Guides
- [Adafruit 1.54" eInk Display Breakouts](https://learn.adafruit.com/adafruit-1-54-eink-display-breakouts.md)
- [Adafruit EYESPI BFF](https://learn.adafruit.com/adafruit-eyespi-bff.md)
- [Adafruit QT Py CH32V203](https://learn.adafruit.com/adafruit-qt-py-ch32v203.md)
- [Digital Clock with CircuitPython](https://learn.adafruit.com/digital-clock-with-circuitpython.md)
- [Party Parrot Zoetrope](https://learn.adafruit.com/party-parrot-zoetrope.md)
- [16x16 NeoPixel Matrix Square Pixel Display](https://learn.adafruit.com/16x16-neopixel-matrix-square-pixel-display.md)
- [MP3 Playback in CircuitPython with Lars the Sloth Puppet](https://learn.adafruit.com/mp3-circuitpython-lars.md)
- [Pico W YBox3](https://learn.adafruit.com/pico-w-ybox3.md)
- [PyPortal Air Quality Display](https://learn.adafruit.com/pyportal-air-quality-display.md)
- [RGB & HSV NeoPixel Dialer](https://learn.adafruit.com/rgb-hsv-neopixel-dialer.md)
- [Programmable Wireless BLE Gesture Mouse](https://learn.adafruit.com/ble-wireless-gesture-mouse.md)
- [Ninja Timer: Giant 7-Segment Display](https://learn.adafruit.com/ninja-timer-giant-7-segment-display.md)
- [Severance Portable Macrodata Refinement Terminal](https://learn.adafruit.com/portable-macrodata-refinement-terminal.md)
- [Ambient Color Control Pad](https://learn.adafruit.com/ambient-color-controller.md)
- [Knobby Sequencer](https://learn.adafruit.com/knobby-sequencer.md)
- [CircuitPython Trombone Champ Controller](https://learn.adafruit.com/circuitpython-trombone-champ-controller.md)
- [Mini LED Matrix Audio Visualizer](https://learn.adafruit.com/mini-led-matrix-audio-visualizer.md)
- [NeoPixel Menorah](https://learn.adafruit.com/neopixel-menorah.md)