OverviewCurrently there are over 422 million people worldwide suffering from diabetes. 28.5% of them suffer from Diabetic Retinopathy(1) . 50% of diabetics are unaware about the risk of losing their vision(2). The number of cases of diabetic retinopathy...
Hardware:Our wide format plotter project got off to a flying start late last year (December 2013) with the main printer framework, electronics and most of the custom software completed within the first three weeks.The next month was spent tweaking both...
Hardware - just stuff I had laying around, really...- Lego Egg-lathe, directly driven by a stepper- Lego linear motion stage, built from tracks of that Lego Boost robot- ESP8266- 2x A4988 drivers.- a proximity sensor for end-stop detection Firmware...
The printer holds a felt tip marker that can move in a two dimension plane, as well as vertically. The user creates an image in the iPad app, then the app controls the printer to move the pen to draw a dot at the position of each pixel. The printer...
So, I am starting this project at the second iteration. The first can be found at the thingiverse link to the left. The prior design is simple and should work fine, but lacked many features I wanted.Here are my design goals (may get updated):1. Can be...
Soldering stations is based on 2-layer PCB, transformer and custom housing (future). Power supply for pen 24V AC. There was a dilemma between power supply choosing, AC vs DC. There were prose and cons, like simpler switching, speed, saturation, isolation,...
Introduction: Hey there! Today, I'm excited to share my experience with you as I delve into the world of pen plotting. I have always wanted to try one of these! I will tell you right now that I am a complete novice. I have only seen these in videos and...
The EDUBOX kit contains complete set of parts and electronic modules to build six models of robots and unlimited number of your modifications.Extended set of wooden parts: vehicle, gorilla, hovercraft, windmill, smartphone holder, pen holder, big wheels,...
The kinematics The kinematics of the clock consists of a mix of h-bot and Cartesian system. The y axis consists of the two rings on the extreme ends of the clock driven by 2 24byj48 motors . The rings are basically gears constrained in outer rings similar...
On the hardware side, this machine possesses two degrees of freedom (X and Y directions). Take into account that as this CNC machine doesn’t have a Z axis, the pen will continuously touch the paper, so it is recommended for continuous line art projects,...
The project basically consists of the following components:1) The brain, RaspberryPi ZeroThe brain of the project is a RaspberryPi Zero. With its cost of just $5, it is an amazing processor and perfect for our application. It not only cuts our cost but...
"Tiger" drawn by polar drawing machineRotaryplate The drawing paper is stuck on the rotary plate. By rotating the plate, the angle phi can be adjusted. The rotary plate is driven by a NEMA 17 stepper motor, which allows fast and accurate positioning....
# Emulate mouse to draw Chord on the computer screen! by Hari Wiguna, Jan 2021 import time import board import digitalio import usb_hid from adafruit_hid.mouse import Mouse import math class Point: def __init__(self, xx, yy): self.x = xx self.y = yy...
How it works When you turn the input crank, the cams turn at a 5:1 ratio. Every time the cams rotate, the laser traces the path once. Using 2 cams allows the laser to move with 2 degrees of freedom. Basically one actuates in the X axis and one in the...