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Una Karlsen

General purpose geek, specializing in Linux and network administration. I dabble in electronics, programming and making things.

Cape Town, South Africa

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This user joined on 07/01/2014.

Projects I Like & Follow

The 2016 Hackaday Prize

This project is a fancy Clock and weather display built around a monitor and a Raspberry Pi.

PiClock - A Raspberry Pi Clock & Weather Display

kevin-uhlir Kevin Uhlir

pcb mill built from garbage using basic hand tools and little money

PCB mill for under $10

The 2016 Hackaday Prize

Fast RPi WiFi without USB

RPi WiFi

Goal: To assemble a working CO2 Laser from a minimum investment using only tools one can find at your average home improvement store.

Low Cost CO2 Laser Build

Complete anti-theft alarm compatible with any kind of sensors, with RFID recognition, GSM and web server, based on Arduino Mega.

Arduino anti-theft alarm shield

A portable, rugged, self-contained system to suit all your RF SIGINT needs in every environment.

Raspberry Pi SDR Cyberdeck

tom-mladenov Tom Mladenov

Hackaday Prize 2019

A set of smart dice, the same size as traditional ones, full of LEDs and Bluetooth-enabled.

Pixels

jean-simonet Jean Simonet

Supplyframe DesignLab: 2023 Hackada…

An open hardware reading device rooted in Adafruit's Feather ecosystem

The Open Book Feather

joey-castillo joey castillo

I decided to design a CNC router entirely from scratch. Pictures and youtube links below.

Desktop size CNC milling machine from scratch

joekutz joekutz

This project is an attempt to teach myself about the inner workings of computers. Naturally I started from the bottom up.

4 bit computer built from discrete transistors

Official Hackaday Prize Entry

Automation framework based on wireless Moteino nodes.

The Moteino Framework

An easy to build, program, modify and use AVR and ESP based Lasertag system for everyone!

LZRTag - Flexible DIY Lasertag

Official Hackaday Prize Entry

A BT 4.0 fitness-tracking smart watch for Android+iOS with a 1.5" color OLED display, SD card, NFC, wireless charging, and precision IMU

WΛLLTΞCH OLED BTLE Smart Watch v6.1

wlltch WΛLLTΞCH

100 MSps 2ch oscilloscope based on Raspberry Pi Pico

RPScope

I wanted to make a low cost drone with all the bells and whistles, so people working with a small budget can get into the drone game. ~$50

ESP32 Drone

The 2015 Hackaday Prize

640x480 (and 848x480!) Color VGA Video Card for Microcontrollers and Single Board Computers

VGA Graphics Over SPI and Serial - VGATonic

A last gasp Uninterruptible Power Supply for any Raspberry Pi computer.

Single SuperCapacitor UPS for Raspberry Pi

bud-bennett Bud Bennett

The 2017 Hackaday Prize

HeartyPatch is a fully open-source, IoT connected, BLE enabled heart-rate variability & ECG patch with great accuracy

HeartyPatch: A single-lead ECG-HR patch with ESP32

ashwin-k-whitchurch Ashwin K Whitchurch

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Bits

JP Gleyzes wrote 12/22/2022 at 09:20

Hi Una,

Thanks for following #A poor man's FPV journey

Are you sure? yes | no

mihai.cuciuc wrote 12/16/2022 at 06:56

Hi, Una! Thank you for your interest in #Squeak: GPS pet tracker

Are you sure? yes | no

Patrick Van Oosterwijck wrote 03/19/2018 at 18:28

Thank you for following my #wESP32: Wired ESP32 with Ethernet and PoE project!

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