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This project implements a very common access control device. The LTPS is equipped with Tibbit #08 (clock/data and Wiegand interface). It gets card codes from an external RFID card reader. The project lets you save user names and their ID codes into the database, as well as verify the cards you read against the records of the database. When you read a card which ID code matches any ID code from the database, the terminal "grants access" (the blue LED...
This tutorial is dedicated to the control of 7-segment LED indicators by means of a single Tibbit #00_1 and several shift register ICs (daisy-chained together).
7-segment indicators are reliable and cheap LED devices which can display decimal digits and some characters. Every segment of the indicator is monitored through an allocated input. To drive all these inputs from the LPTS, you need many wires (32 lines for a 4-digit display). A more pragmatic
This is a simple application which enables the control of a GPIO line via a web browser. To toggle the line HIGH/LOW, click on a rectangle. This app can be used to control a relay Tibbit, a LED Tibbit, or some other "output" Tibbit.
The app utilizes a popular socket.io library to facilitate a connection without interruption between the TPS and the browser, as well as the AngularJS V1.x.x front-end framework that makes the development of single-page
About the Application
You can expand the functionality of the prev app if you add a hardware button control. Pressing the button will also toggle the state of the GPIO line (LED, relay,...) which is reflected in the LED state displayed in the browser window.
What you need
Besides the hardware used in the prev app you will also need:
1 x Tibbit #38 (push button)
1 x Tibbit #00_3 (2 direct I/O Lines with 5V and Ground)
Unlike Node.js, Git and Python 2.7, NPM is not installed on each LTPS by default.
To install it, you should connect to the LTPP board from an SSH client and do the following steps:
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