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ptrav

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This user joined on 04/03/2017.

My Projects

Based on experience with the previous chording keyboard, fully 3D printable version with two joysticks.

Chording Hybrid Keyboard

Filling the vacuum in high quality chording keyboards market.

Two-handed chording keyboard

A no-compromise, mechanical switch, 6-button chording keyboard, placed on the rear side of a tablet or a mobile phone.

Mechanical GKOS keyboard for phones and tablets.

GKOS Keyboard with mechanical switches and a joystick mouse.

GKOS Keyboard

Projects I Like & Follow

The 2018 Hackaday Prize

The Redox project is an open-source, QMK (Quantum Mechanical Keyboard Firmware) powered, ergonomic split mechanical keyboard.

Redox keyboard

The 2018 Hackaday Prize

USB hid keyboard ... etc. for Raspberry PI

mini (Pi)QWERTY USB keyboard

A 3d printed, motorized, and hackable telescope base with star-finding capabilities built on a raspberry pi zero.

pisolaris

A quadruped robot using cheap servos closed-loop control and force-sensing resistors for ground force feedback. Uses Teensy and PCT.

Quadruped Robot

Hackaday Prize 2019

The Arduino Nano Quick Project. Develop Everywhere.

Arduino Nano QP

Hackaday Prize 2019

Opensource, inexpensive, mobile thermal camera for use in electronics, home inspection, non-contact thermometer, heat distribution and more.

Open Thermal Camera

Hackaday Prize 2019

A 16 bit computer with 20 address bits and video display, from just a few TTL and memory chips. Instructions resemble 68000 / PDP-11.

Kobold - retro TTL computer

The 2018 Hackaday Prize

A haptic glove that vibrates when its touches a virtual object. It also tracks physical finger positions and hand orientation.

DIY Haptic Glove for VR

Experimental thumb keyboard, suitable for a hand held device

Thumb Keyboard

A fully hardware debounced rotary encoder.

Hardware Debounced Rotary Encoder

Add a second brain to your Arduino Mega

RetroShield for Arduino Mega

The 2018 Hackaday Prize

Inspired by the attempts of other people around the Interwebs, I use a motor as a rotary encoder, but with a different approach.

Motor as Encoder

My custom split keyboard with integrated trackball and mouse buttons. Inspired by Ergodox and Keyboardio (https://shop.keyboard.io)

Split 58

A quadruped with custom 3D printed legs and locomotion software written in Python on a Raspberry Pi

Quin the Quadruped

Turn any small DC motor into a powerful servo-motor with robust and accurate position, speed and torque control with this tiny controller.

Tiny Closed-Loop Motor Controller

Instant gratification on the ESP8266 and ESP-32

Playing with MicroPython on the ESP

An ATmega 1284 based single board computer optimized for use with Terminal Basic.

Terminal Basic SBC

A poket-to-laptop size microcomputer/programmable calculator, based on Arduino DUE and Terminal-BASIC

Terminal-BASIC programmable calculator

Andrey Skvortsov

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Bits

roelh wrote 06/10/2019 at 10:06

Hi Ptrav, thanks for following and liking the #Kobold - retro TTL computer !

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