LCD2USB | Cheap and simple USB to HD44780 text LCD interface

by harbaum C Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | LCD2USB Summary

LCD2USB is a C library typically used in Internet of Things (IoT), Arduino applications. LCD2USB has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

LCD2USB is a open source/open hardware project. The goal of LCD2USB is to connect HD44780 based text LCD displays to various PCs via USB. LCD2USB was meant to be cheap and to be made of easily available parts. It is therefore based on the Atmel AVR Mega8 CPU and does not require any difficult to obtain parts like separate USB controllers and the like. The total cost (without display and pcb) are about 5 to 10 Euros. LCD2USB currently comes with a simple demo application that works under Linux, MacOS X and Windows. LCD2USB is currently supported by lcd4linux (LCD2USB support is built-in), LCD Smartie (requires a seperate driver), and LCDProc (LCD2USB support is built-in). Every now and then i have spare PCBs available. Send me an email if you are interested.

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Quality

Security

License

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Support

LCD2USB has a low active ecosystem.

It has 92 star(s) with 31 fork(s). There are 24 watchers for this library.

It had no major release in the last 6 months.

There are 5 open issues and 1 have been closed. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of LCD2USB is current.

Quality

LCD2USB has 0 bugs and 2 code smells.

Security

LCD2USB has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

LCD2USB code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

LCD2USB does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

LCD2USB releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

It has 44 lines of code, 2 functions and 9 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

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LCD2USB Key Features

No Key Features are available at this moment for LCD2USB.

LCD2USB Examples and Code Snippets

No Code Snippets are available at this moment for LCD2USB.

Community Discussions

Trending Discussions on Internet of Things (IoT)

Display data from two json files in react native

QUESTION

Display data from two json files in react native

Asked 2020-May-17 at 23:55

I have js files Dashboard and Adverts. I managed to get Dashboard to list the information in one json file (advertisers), but when clicking on an advertiser I want it to navigate to a separate page that will display some data (Say title and text) from the second json file (productadverts). I can't get it to work. Below is the code for the Dashboard and next for Adverts. Then the json files

...

ANSWER

Answered 2020-May-17 at 23:55

The new object to get params in React Navigation 5 is:

Source https://stackoverflow.com/questions/61859411

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install LCD2USB

You can download it from GitHub.

Support

Problem: The device seems to work fine, it is detected correctly by Linux, but i get various error messages when accessing it from the test application. Solution: Make sure that you run the test application as the root user since the standard user may lack the rights to access all aspects of the lcd2usb hardware. Problem: The device is not properly detected. Linux reports an error like "device not accepting address" in the system log but the LCD displays the init message (LCD2USB VXX.XX). Solution: The USB interface is not working at all. Your AVR is very likely running at the wrong speed. Please make sure that the fuses are set correctly. If this doesn't help, the zener diodes may be too slow (see next problem). Problem: The device is not properly detected. Linux reports an an error like "device descriptor read/all, error -71" in the system log. Solution: The device is working partly and the USB transfers are unreliable. This was often caused by "slow" high current zener diodes which i had on the Reichelt part list some time ago. These slow diodes are easily recognized as they have thicker wires than the other parts. You can just try to remove the zener diodes and the device will work if your host PC copes with 5V on the USB data lines (most PCs do, especially older ones). Also using a USB hub between a device without zener diodes and the PC may lead to a working setup even if the PC does not accept 5V on the USB data lines. Otherwise you need faster diodes as a replacement like the one available from reichelt under part no "ZF 3,6". These are also part of the current part list and are known to work.

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