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Chris Johnson

Electrical engineer specializing in hardware and firmware design. Branching out into Hydroponics.

Connecticut

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This user joined on 05/24/2016.

My Projects

A mist-based tower system for growing leafy green vegetables

The Little Green Tower

A Raspberry PI HAT designed to control an aeroponics tower system

SpiroBoard Aeroponics pH / EC / Motor Controller

Projects I Contribute To

Tindie

A place for Tindie sellers and the community to meet and stretch their legs

Tindie Dog Park

Projects I Like & Follow

The 2016 Hackaday Prize

Hobby brushless motors are incredibly cheap and powerful. However we need a way to make robots out of them. ODrive is that way.

ODrive - High performance motor control

Always jealous of people who could afford big Nixie Tubes, I rolled my own alternative with WS2812Bs and laser cutting!

"Lixie", an LED alternative to the Nixie Tube

The 2018 Hackaday Prize

AMS's new AS7265X 3-chip set promises a compact, 18-channel, 20 nm FWMH spectrometer for less than $25

Compact, $25 spectrometer

Hackaday Prize 2019

Very recently I was so impressed by a Japanese modern artist who draws golden fish in epoxy. I cannot draw but make circuit. Why not!

Enclose them all in super clear epoxy!

8 GHz BW, up to 1 TS/s ET Sampling

8 GHz Sampling Oscilloscope

A 1" by 1" 20msps Oscilloscope based on the PIC32MZ

1 Square Inch 20msps Oscilloscope

The 2017 Hackaday Prize

A small and inexpensive kiln for melting metals and firing clay

RepKiln

Hackaday Prize 2019

40 led flashing 3D space ship model

PCB - 3D Startrek Enterprise

Hackaday Prize 2019

A neat Tree like decoration based on the RGB LEDs.

RGB Tree

Single rotor, "human-safe", selfmade ball-drone with air vanes for position control

The Ball-Drone Project

Benjamin Prescher

Making the HX711 into a more general purpose differential data acquisition module with an interface to Raspberry Pi.

A Cheap 24-bit Differential ADC for Raspberry Pi

I2C OLED connected to an Attiny85 and a Charlie-plexed button matrix

Skeleton Attiny85 Handheld

Use a USB OTG cable with Android devices for Serial, REPL, and a basic code editor for use withCircuit Python Boards.

Android Circuit Python Editor

Simple Oven for Blowing Bubble Canopies from Acrylic Sheet.

Plastics Blow Oven

Michael Barton-Sweeney

Tensegrity structures aren't just for architects.

Tensigral Lamp

A super simple, inexpensive method to make layer synchronized time lapse movies of 3D prints.

Layer Synchronized Time Lapse of 3D Prints

16mm 5x5x5 LED Cube on a Carduino Base

Five Cubed

The 2016 Hackaday Prize

I am putting together an open source nature camera with existing consumer products. My goal is to have an endlessly expandable system.

TreeCam

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Bits

Kris Winer wrote 10/16/2018 at 16:22

Thanks for following my Compact, $25 spectrometer project!

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