FARMBOT Open-source CNC Farming Machine
ArduinoControl

FARMBOT Open-source CNC Farming Machine

FarmBot is an open-source CNC farming machine designed for small-scale precision food production. Similar to any CNC milling machine, FarmBot hardware employs linear guides in the X, Y and Z directions for tooling. FarmBot tools include: seeder, watering nozzle, camera, weeder and...

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Mumai – Control Anything Using your Muscles
ArduinoSensor

Mumai – Control Anything Using your Muscles

Alvaro Villoslada designed an open-source muscle-machine to control any kind of electronic device through the myoelectric (EMG) signals. The name of this project is Mumai and it is published on hackaday.io. “The Professional EMG systems are very expensive, cumbersome and...

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Simple two-transistor circuit lights LEDs
Led

Simple two-transistor circuit lights LEDs

Barry Tigner @ edn.com has a design idea on how to power a LED from a 1.5V battery using two easily available transistors. A previous Design Idea describes a circuit that uses an astable multivibrator to drive an LED (Reference 1). The circuit in Figure 1 uses a simpler alternative...

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Google’s quantum computer just accurately simulated a molecule for the first time
Science

Google’s quantum computer just accurately simulated a molecule for the first time

Google's engineers just achieved a milestone in quantum computing: they’ve produced the first completely scalable quantum simulation of a hydrogen molecule. by DAVID NIELD @ sciencealert.com Researchers working with the Google team were able to accurately simulate the energy of...

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Measure Weights Using OpenScale from Sparkfun
ArduinoSensorTest/Measurements

Measure Weights Using OpenScale from Sparkfun

Sparkfun has a simple-to-use and open source solution for measuring weight and temperature. All you need is a load cell hooked up with OpenScale. You may find a variety of high quality weight sensors to be used in this project on Flintec load cells. OpenScale uses HX711, a 24-bit...

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Arduino Proximity Alarm
Arduino

Arduino Proximity Alarm

Lucas Reed @ instructables.com has build a proximity alarm using Arduino and an ultrasonic sensor from Parallax. If a nearby object is approaching then the alarm will sound and an RGB LED will light up. He writes: An ultrasonic rangefinder and Arduino microcontroller will check for...

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Neopixel Night Light using ATtiny85
Led

Neopixel Night Light using ATtiny85

joshua.brooks @ instructables.com describes how he build a night light using an Adafruit NeoPixel, ATtiny85 microcontroller, TSSP4038 IR receiver and some other easy available components. I'm giving some workshops in electronics in a few weeks, centered around an inexpensive, but...

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A1367 – Field programmable linear Hall-effect sensor IC
Sensor

A1367 – Field programmable linear Hall-effect sensor IC

Allegro MicroSystems Europe has added a field programmable precision linear Hall-effect current sensor IC with features including a 240 kHz bandwidth, integrated voltage regulator, reverse battery protection, user-selectable ratiometry, and uni- or bi-directional output options. By...

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