https://github.com/martinberlin/sharp-lcd-esp32

Demos using RTC and Sharp LCD. PCB controller available to build a small digital clock
https://github.com/martinberlin/sharp-lcd-esp32

esp32c3 lcd-display

Last synced: 5 months ago
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Demos using RTC and Sharp LCD. PCB controller available to build a small digital clock

• Host: GitHub
• URL: https://github.com/martinberlin/sharp-lcd-esp32
• Owner: martinberlin
• Created: 2023-06-03T06:38:00.000Z (about 2 years ago)
• Default Branch: master
• Last Pushed: 2024-07-14T05:14:06.000Z (12 months ago)
• Last Synced: 2025-01-31T04:51:24.412Z (5 months ago)
• Topics: esp32c3, lcd-display
• Language: C
• Homepage: https://www.tindie.com/products/fasani/esp32s3-sharp-memory-lcd-controller/
• Size: 131 KB
• Stars: 4
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: Readme.md

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README

        
## Sharp LCD PCB

This is a small sized PCB to control this display with a ESP32-C3.

It has a DS3231 RTC chip with it's SQW/INT pin wired directly to the EXTCOMIN pin of the LCD.

> The display requires that the polarity across the Liquid Crystal Cell is reversed at a constant frequency. This polarity inversion prevents charge building up within the cell

![sharp PCB front](https://raw.githubusercontent.com/martinberlin/H-spi-adapters/master/1.54-sharp-lcd/schematic/sharp-lcd-front.png)

![sharp PCB back](https://raw.githubusercontent.com/martinberlin/H-spi-adapters/master/1.54-sharp-lcd/schematic/sharp-lcd-back.png)

[Sharp PCB controller](https://github.com/martinberlin/H-spi-adapters/tree/master/1.54-sharp-lcd) is open source. Find the KiCad files in the repository link.

## LCD demos with ESP32C3

To be described after the first demos are coded.

[Short video preview](https://twitter.com/martinfasani/status/1664759302995734530)