Basic CRUD in Angular 4  using Codeigniter 3.1.6 for Beginners
Download from Github

Single & Multiple signature Demo works in Codeigniter 3.0.4 for Beginners
Download here .. ;) All the best
https://github.com/eboominathan/Signature-in-Codeigniter-3.0.4

Dependent-Dropdown-in-Codeigniter-3.0.3
with Database of Country,State,Cities in Mysql For Beginners

https://github.com/eboominathan/Dependent-Dropdown-in-Codeigniter-3.0.3

PayPal integeration in Codeigniter  Demo works here

https://github.com/eboominathan/Paypal-in-Codeigniter-Demo-works

Multi User Login Demo For Beginners in CI 3.0.3 Download here !
Admin Note :(Will upload it later in GITHUB )

https://github.com/eboominathan/Multiuser-Login-Demo-in-Codeigniter3.0.3

Demo Works on Insert Batch in Codeigniter

https://github.com/eboominathan/ci_insert_batch

Basic CRUD In ANGULAR JS Using Codeigniter 3 

https://github.com/eboominathan/Basic-CRUD-in-Angular-JS-Using-Codeigniter-3