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wattnotions
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This circuit diagram was designed in Inkscape with all of the electrical symbols taken from the WikiMedia commons electrical symbol library. It’s got transistors, voltage sources, LEDs, resistors etc all in SVG format. There are a few steps in Inkscape to…

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A few years ago I made a 2d line scanner using a webcam and a laser. It worked pretty well but two major improvements needed were the addition of a line laser as opposed to a dot and using a camera with a higher framerate. For version 2 of this project I…

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This post will document one possible way of getting an LED blinking with the tm4c123g microcontroller. I’ll be using the TIVA C Launchpad for this example: A toolchain is needed to compile and link our code. I used this one:…

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float l1 = 12; float l2 = 9.7; float l1_scaled = 0; float l2_scaled = 0; float l_total; int width = 650; int height = 650; int centerX = width/2; int centerY = height/2; int circle_diameter = (width – 75); float angle; void setup() { size(650,650);…

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As part of the PlantBot project, I wanted a way to look at sensor data over the internet. These sensors are moisture, light and pressure. The main one is moisture, the other two were just added in because I had the parts lying around. Here is a block…

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Sending data from a microcontroller is a pretty common requirement in a lot of the projects I work on. One way of doing it is sending serial data out from the uC to a serial to usb converter chip to a computer. This has the advantage of involving very…

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Drawings: Download svg file here Download code here Extra Info: LED strip used is ws2812b. Adafruit neopixel library ‘buttoncycler’ program lightly modified to work with a potentiometer.

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PlantBot – because watering plants is boring. Laser Cutter Plans: Here is a preview of what the plans look like: For laser cutting, click here to download an SVG file of the plans Code: #include #include Servo arm; Servo shoulder; Servo pull; //servo…

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Build Info: Gears made using the gear extension in inkscape. The inside gear or ring gear was also made with this extension but I inverted it. I’ll be making a video tutorial on how to do this in the near future. The ring gear has 42 teeth, the 3 ‘planet’…

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