May/June 2024

26.5-40 GHz 3D Printed Antenna

A 3D printed antenna in PLA, with a surface finish of copper, making this antenna super cheap. A maximum gain of 18.1dB was achieved, demostrating the potential of this kind of antennas. There is still a lot to experiment, such as electroplating, and surface smoothing using acetone in ABS! 

March 2024

Simulations in ADS

A small simulation of a transition in ADS for sanity check, since one of my designs was having huge losses. It turns out it is porbably from the connectors themselfs, since the transition seems to be ok.

October 2023

LoNam v5

Another version of my Low Noise Amplifier, with a dual output (2 or 3 gain stages), including a powermeter and a LED for showing the intensity of the signals being received. Made for 1.7 Ghz, with a bandpass filter, a low noise amplifier and 2 power amplifiers.

Summer 2023

Satellite Reception

In the summer, I tried to receive signals from some other satellites, but now with much better quality. This is my antenna, which is pointed to a dish, for better reception. Unfortunately, even after many tries, I was not sucessfull to capture any data. The lack of equipment was a problem, but I am still working on this.

April 2023

Satellite Reception

This image was captured from a passing by weather satellite with an uncrypted downlink. After building my own LNA board, and using a simple V-shaped dipole antenna, I was able to get reception. Failures: A lot, but I did it! Frequency: ~137Mhz

March 2023

Wideband LNA

3rd iteration fo my wideband low noise amplifier. Its purpose is to amplify very weak radio signals, like the ones we receive from satellites. MicroUSB powered, it now just needs an aluminum enclosure. 

Summer 2022

Development board

A development board I designed. The ultimate goal is to use it in a secret product I have been thinking about. Worth the note that it was my first board ever, so I made many mistakes and it does not work. The version 2 is already ready for the production, but I am still putting some money aside for it.

March 2022

Arm LEGV8 Cpu Simulation

Simulation of a very simple datapath for a CPU. Basically. a LEGV8 Arm CPU core simulation using Verilog. Open-source. Made even bore having a Computer Arch. course, given I was very interested.

Summer 2021

Absolut Reader

An ebook reader fully of tools, such as the already mentioned Chaimager, which helps one to not forget the name of characters, for android, made using React Native. At the present (October 2021) the 1st version was released! Check out the main website of the project:
Github
 Old Webpage

2021

With the main goal of colecting info from the hydrogen line and compute is spinning velocity, I built my own radio telescope.
Winner of a Honor mention in a National Competition for Young scientists. For more info, check the links:
Instructables
 PDF Report RTL-SDR Article

2021

Voice chess,
a Chess Board With Voice Commands

For all people with incapabilities (or just for the lazy guys), this board allows to play chess without hands. Using google´s funcionality that translates the voice to text, the commands of the movement are sent for the controller, that moves the pieces (and even remove them when they are killed) using a magnet. For more informations about the building, code, etc, check the Instructables page of the project. It was covered on medium.com, hackaday and tons of others websites!
Instructables

2021

Chaimager

An app built fully in python with Tkinter for the GUI. It allows a user to modify automatically a PDF, adding images next to all the ocurrences of a particular name, so that you may recall easier who is the character the author was talking about. Check it out in my old website page.
Old Webpage

2021

Moving Phantom, to scare some people on Halloween.

When someone is walking next to it, a PIR triggers, making the light bulb to glow, and the arms to move. A "owowowow" sound is also produced using columns. Perfect to scare people at night, on a spot with lack of light, during halloween.
Instructables