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React native Typescript Node.js graphql (no SQL) Stripe AWS Design Stores deployment

Partyus

( App developement, Design )

Partyus is a mobile aplication for connecting events organizers with clients. It authorized organizers to create an event in where clients can register and pay for the ticket if it is the case.
Once you have your ticket, in the event date, the organizer scan your QR code and mark it as joined in the event avoiding ticket falsification.
Finally, the money of each ticket is sent to the event organizer through a complex and secure backend.

¿How was it developed?
First, I had to do research in design and app interface for developing it. From the main idea of connecting organizers with clients. I started to break down untill arriving to each screen and app logic.

For the frontend, it was developed in React Native, a framework for developing mobile apps by combining HTML, javascript, React and CSS in a language called JSX.
In the backend, I developed it using AWS Amplify. I used 4 main services in AWS part of Amplify:

• Dynamo DB for database management with graphql

• AWS Cognito and IAM for handling app users an security

• Lambda for making secure cloud functions that handle payments

• S3 storage for handling user images and data

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React native Typescript Node.js graphql (no SQL) Google API's (maps and auth) Stripe AWS

Velpa

( Fullstack developer / founder )

Functionement
Velpa is a mobile aplication to help people that want to go hikking or in an open air adventure and doesn't know someone that guides them.

The app logic is first to give the adventure guides to propose an adventure if it doesn't exist in the app (Ej.: Mount everest) and it is send to admins for revision.
Once the adventure is aproved, the guide can request for the hability of adding his date of the hike with a lot of personalization.

Now it is time for the client to locate the adventure (Mount everest) and make a booking there if a guide published a date that fits the client's needs.

¿How was it developed?

First with google services, I handle google maps for a custom animated map and manage oAuth google sign in.
For the user information, all was developed in graphql combined with AWS Dynamo DB. It all manage a login and user authorization for accesing the data.
Finaly I used stripe and REST api's for secure managing payments and encrypted cards information.

HDL Vivado 7 seg Display 2 bits calculator

Verilog HDL

( School project )

Objective:
Design and implement a calculator using a 7-segment display and Verilog HDL.

Hardware and Software Used:
Basys-3 board
7-segment display
Verilog HDL
Xilinx ISE Design Suite


Design:
The calculator will have a 4-digit 7-segment display and will be able to display numbers and results of calculations. It will have a keypad with numeric and operator keys to input data and perform operations. The design uses Verilog HDL to create modules for the calculator, such as a module for the keypad interface, a module for the display, and a module for the arithmetic operations.