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Johan Cronje

I like to build stuff

San Diego, California

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This user joined on 02/12/2015.

My Projects

Arduino Uno shield & sketch to convert the input from 32 switches to MIDI notes via Hiduino firmware

Organ Pedalboard MIDI Conversion

johan-cronje Johan Cronje

A modern twist on a classic musical instrument: the Virtual MIDI pipe organ

Virtual Pipe Organ

johan-cronje Johan Cronje

Things I've Built

Yet another ATX Power Supply

ATX power supply with a 4 port USB charger & voltage/current adjustable module. Current sensors on all the fixed voltage lines too!

Projects I Like & Follow

The 2015 Hackaday Prize

Designing an open source, modular bench power supply to rule them all.

Bench Power Supply

the-big-one The Big One

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

Hackaday.io Project

Hackaday Prize 2019

I didn't have enough to buy a Lab Bench PSU... So I made one.

OPEN Power

john-loeffler John Loeffler

Measure the active time of a heater to analyze its behaviour with a ESP8266 without an additional controller.

simple native ESP8266 Smartmeter

Official Hackaday Prize Entry

Easy to configure & use wireless home automation network including a central station and various low-power nodes.

SmartHome

arcadia-labs Arcadia Labs

Basic energy monitor using the ESP8266 and the ATMega328

ESP8266 Current Monitor

patrick-mcdonnell Patrick McDonnell

Official Hackaday Prize Entry

An open-source "smart watch" that can be built from easily available parts, and assembled by hand. Designed for hackers

OSHWatch

jared-sanson Jared Sanson

WiFi Coconut is a dual-interface, 58-hr battery life, OpenWRT running, interchangeable antenna, pen-testing portable router.

WiFi Coconut

Official Hackaday Prize Entry

A super high resolution 9.7" LCD panel with an Arduino compatible adapter that connects to your computer

OSCAR: The Open Screen Adapter

freddie-temperton Freddie Temperton

This project aims at building a rather simple yet useful bench power supply for everyday tinkering.

ElbSupply - Simple linear bench supply

The Matrix clock is a single board, highly compact, Arduino compatible clock that displays the time and animations on an LED matrix.

Matrix Clock V1.0

Official Hackaday Prize Entry

Arduino based bicycle computer using open hardware and software logging data on SD card and JS web interface using USBOTG and USBHID

Open Bicycle Computer

Minimalist desk clock based around Russian Nixie tubes.

Obsolete Time

B3606 is a cheap MCU controlled power supply, I'm reverse engineering it and writing software to add serial port and more features.

Power Supply B3603 Alternative Firmware

baruch-even Baruch Even

Supplyframe DesignLab: 2022 Hackada…

An affordable Open Source Weather Station for Everyone

Solar Powered WiFi Weather Station V4.0

open-green-energy Open Green Energy

Official Hackaday Prize Entry

Most homes have rooms that are too hot or cold and waste power. This project is an open source/community to solve that problem thru zoning.

DIY Climate Control at your finger tips: WiFi XBee

Hackaday Prize 2019

'Professional' wind instruments are mounted high on a pole in an exposed location with LoRa data transmission

Low Power High Accuracy Weather Station

goat-industries GOAT INDUSTRIES

USB and manual control, and monitoring, 2 channel 5A 30V bench supply.

Bench power supply

rue-mohr Rue Mohr

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Bits

John wrote 01/21/2016 at 18:12

Did you finish this project?

Is the arduino sketch available?

Do you have any PCBs left over?

Are you sure? yes | no