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Projects Don Pratt likes and follows

15.1k
1.5k
76
Strip down PET#1 Recyclable plastic bottles. Convert into new usable 3D filament. Load up your favorite 3D printer and recreate!
Project Owner Contributor

The Recreator 3D - Make Recycled PET#1 3D Filament

joshua-r-taylorJoshua R. Taylor

19.8k
742
93
A LISP-programmable laptop with battery life measured in years
Project Owner Contributor

PotatoP

andreas-eriksenAndreas Eriksen

2k
493
11
Using the joy of electron-tunneling, this device drives one of two outputs when triggered.
Project Owner Contributor

Schrödinger's Trigger

legionlabsLegionlabs

39.4k
138
112
Ever wanted to use plastic bottle for 3d printing ? Here is how to !
Project Owner Contributor

PullStruder: from plastic bottle to PET filament

jp-gleyzesJP Gleyzes

15.2k
92
82
Parts and print files to build an extremely efficient hovering platform.
Project Owner Contributor

The "Cyclone-Rotor" UFO Drone

nick-rehmNick Rehm

8.1k
91
96
Wireless device for measuring temperature, humidity and pressure with a e-paper display, with a weather forecast, batteries -operated
Project Owner Contributor

Mini weather station Efekta with e-paper display

andrew-lamchenkoAndrew Lamchenko

7.3k
89
77
An open-source, low-cost, large-format 3D printer that can print directly from shredded plastic trash instead of filament
Project Owner Contributor

The Trash Printer - Version 3

sam-smithSam Smith

15.6k
86
75
alpha and beta instead of x and y
Project Owner Contributor

Dual-Disc Polar Printer

heinzheinz

6.5k
82
74
Combine the speed of a Delta printer with the automation of a conveyor belt
Project Owner Contributor

Delta belt 3D-printer for automated production

brian-brockenBrian Brocken

8.3k
71
71
Solar Bottle Lamp is a solar-powered light that is constructed from waste plastic bottles. The design idea is to reuse waste plastic bottles
Project Owner Contributor

DIY Solar Bottle Lamp

open-green-energyOpen Green Energy

6.7k
64
70
I like to call this my smart watch, as it can calculate numbers and show the time
Project Owner Contributor

New PCB For Calculator Watch

davedarkodavedarko

4.7k
39
37
Adding FPV experience to my model railway.
Project Owner Contributor

Model railway FPV

vassily98Vassily98

8k
37
56
What, you're using a 555? I could've done that with a microcontroller!
Project Owner Contributor

ATTiny555

shranav-palakurthiShranav Palakurthi

2.2k
33
22
Using your phone’s camera and IMU to position stabilize a self balance robot – no additional sensors needed
Project Owner Contributor

World’s first camera stabilized self balance robot

serialsensorSerialSensor

12.3k
30
31
A simple to build, inexpensive PCB drill press that is highly accurate with light and foot pedal.
Project Owner Contributor

Highly Accurate Really Cheap PCB Drill Press

wkfayw_k_fay

4.4k
25
34
The World's First Battery-Powered All-In-One Portable Amstrad CPC!
Project Owner Contributor

The Amstrad CPC Portable

michael-wesselMichael Wessel

1.8k
18
21
The MCL65 is a cycle accurate microsequencer-based FPGA core which can be used as a drop-in replacement for the MOS 6502
Project Owner Contributor

MCL65 - Cycle Accurate MOS 6502 FPGA Core

ted-friedTed Fried

15
17
A defcon badge that's a throw back learning tool in disguise
Project Owner Contributor

DC Zia 30-in-One Badge

hamsterhamster

2.3k
13
13
Yet another overly engineered business card, that probably I would never give a way, because it is too expensive.
Project Owner Contributor

Electronic CV

dimitarDimitar

449
7
10
Raspberry pi 4 portable cyberdeck with panel mounted inputs
Project Owner Contributor

Graflex cyberdeck

andyfriedlandyfriedl

209
4
3
This is an amazing approach to program these small power microcontroller without spending a lot of money on development shields.
Project Owner Contributor

ESP8266 Programming Shield is Insane

electroboyElectroBoy

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