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John Hamann

constantly curious

Seattle, WA

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This user joined on 11/26/2014.

My Projects

Measuring device housed in an Altoids tin. Uses a rotary encoder with a wheel to estimate distance and display measurements on an LCD.

Distance Analyzer 3000

A small device that only uses 1 or 2 74HC595s to help illustrate how shift registers work.

Shift Register Concept Visualizer

A modern upgrade for a cassette player. The brains android with the feel and function of a vintage Walkman.

WM-F45 Upgrade (Sony Walkman)

Projects I Like & Follow

Follow for the 'Hacklet' and latest news about hackaday.io

Hackaday.io Project

An hacker's swiss knife in the form factor of the best phone ever

1337 3310 tool

Hackaday Prize 2019

ESPlay Micro is an ESP32 Based emulator device for playing retro games, able to play classic games NES, GB, GBC, SMS, Game Gear and more.

ESPlay Micro

Pavapro is tiny programmer you can bring anywhere. You can load binary file into it and bring/use it as you wish. And a bit more than that.

Pavapro - portable AVR programmer

Ion wind lifters make wind (airflow). Make that wind variable => sound ;-)

Ion wind loudspeaker experiments

A watch with an OLED display, powered by a Trinket

Trinket Watch

LED strip music visualiser on a jar

LED Jar

Finding open WIFI connections, default setups, and messing with people around you wanting an open wifi connection.

Shame on you!

A simple pocket tool to measure and log wind speed and direction.

Wind Measurement

Christopher Kratz

This project is intended as an entry for the Trinket Everyday Carry Contest. A trinket based, convenient, wearable voice memo recorder

A Wearable Voice Memo Recorder

Fairly simple portable weather station with temperature, humidity, heat index, barometric pressure, and UV. LCD display and audible alerts.

Portable Weather Station

UnreliableMongoose

Bits