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How a Character LCD works Part 1

The 8-Bit Guy1 HN recommenders · 2018–2022
1.3M views · tutorial · evergreen · Uploaded 2017-04-26

The 8-Bit Guy explains how character LCD screens work and how to control them directly, first part of a series.

HN commenters recommend the series as an approachable demonstration of the simple standardized interface used by character LCDs.

Embedded systems & DIY electronicsDemoscene & retrocomputingElectronics & circuit design

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3 comments from Hacker News

@rwmj2018 · in “Designing a RISC-V CPU in VHDL: Arty S7 RPU SoC”

If you don't need actual HDMI and a regular monitor then there are other solutions which are more like what you describe: Firstly there are simple character LCDs which all have a standardized and simple electrical interface[1] for sending ASCII characters and control codes. Then there are bit-addressable colour displays that let you send drawing commands, eg: [2] [3] [4] [1] [VIDEO] [2] [LINK] [3] [LINK] [4] [LINK]

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@Nr72019 · in “Microcontroller LCD Initialization (2012)”

The 8-Bit Guy on Youtube made a great video series on character LCD screens and how to run them. In the first video he shows how to drive one manually using just switches: [VIDEO] In parts 2 and 3 he shows two ways how to drive them with a C64: [LINK] [LINK]

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@loudthing2022 · in “The 8bit Keyboard”

Reminds me of the 8-bit guy's device he created for manually programming character lcd displays. [VIDEO]

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