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Ricardo

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This user joined on 06/26/2017.

My Projects

Convert a rear bike light into a USB rechargeable one.

USB rechargeable bike light.

ricardo Ricardo

Old handheld terminal for sending orders over the phone. Instructions manual missing.

MSI/55 handheld terminal modem

ricardo Ricardo

Supplyframe DesignLab: 2022 Hackada…

A simple circuit to tell if it is hotter or cooler outside or at home.

Differential thermometer

ricardo Ricardo

Projects I Like & Follow

2021 Hackaday Prize

LVDS, eDP, connectors and controllers - let's learn it all

All About Laptop Display Reuse

Hackaday Prize 2019

Environmental sensing for everyone.

FieldKit

shah-selbe Shah Selbe

The 2018 Hackaday Prize

This project started when my digger obsessed son said 'Daddy can you make me an Excavator?' So I thought sure how hard can it be....

Plywood Excavator

alex-lovegrove Alex Lovegrove

Build a complete LW, MW and SW (AM and SSB) radio with the Si4735 / SI4732 and Arduino.

Si4735 SSB Receiver Controlled by Arduino

ricardo-lima-caratti Ricardo Lima Caratti

Transmit radio signals using just a serial port? You bet!

Serial Port SDR

ted-yapo Ted Yapo

Using a Raspberry pi 3b+ and RTL-SDR Dongle to make a Digital Police Radio.

Raspberry Pi Digital Police Scanner

An "effect box" which works as octave-down effect (halves input frequency). No internal oscillator involved, no PLL, just analog maths!

Analog oscilator-less octave-down effect box

ms-boss MS-BOSS

Hall effect sensor detects the proximity of magnetic field, and "pushes" the pendulum in the exact moment.

Magnetic Pendulum

Exploring the FL2k USB-to-VGA dongle for signal generation

FL2k Experiments

ted-yapo Ted Yapo

This new modem is build based on the NPR project from f4hdk. It is a compatible hardware with additional features like PoE, LNA and PA.

NPR-H New Packet Radio Modem

This is a classical OTL (Output Transformerless) headphone amplifier base on popular 6AS7GA and E88CC double triode

OTL - Headphone tube amplifier 6AS7GA and E88CC

Reverse-engineering (mostly-)cheap eBay finds

Avionics + mil-spec teardowns

don-straney Don Straney

A dual band VHF/UHF module based around two AX5043 radios. Built to work with HAM Radio communications using AFSK and G3RUH modulations.

VUHF Radio

A small portable handheld geocache locator tool that uses a ring of LEDs show direction.

Arduino Geocache Locator

sean-hodgins Sean Hodgins

Antenna for WiFi and Bluetooth based on shading of the second Fresnel zone (Fresnel diffraction).

Fresnel zone antenna (PCB)

denys-zaikin Denys Zaikin

PC FM radio with RDA5807M without microcontroller. C# form control the chip through serial port.

PC FM radio with RDA5807M

florin-nica Florin Nica

I needed to use my multiband discone antenna with my two APRS iGates.

APRS 70 cm and 2 m with a single multiband antenna

Couple of months ago, I bought a "Raspberry Pi Pico" to get some hands-on experience of it and to create some amazing projects using it.

Getting Started With Raspberry Pi Pico

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