Projects

Lock in Amplifier and Temperature Control

DNA Melting Part 2: Lock-in Amplifier and Temperature Control

In Part 2 of the DNA Melting Lab you will make revisions to allow greater control of your instrument and to reduce the effects of noise. You will add a pulse-width modulation (PWM) heater controller to enable careful control of the heating and cooling rates of the DNA sample. This will allow you to maintain […]

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Chur Robot

Chur-Robot

Electrical Components The electrical components are the five motors and their associated circuits, the buttons, and the thermocouple. The Circuit We are controlling two stepper motors, three servos, a thermocouple, and a set of buttons using an Arduino. Our final circuit diagram looks like this: Building the Circuit 1. Stepper motors: The first step we

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Arduino Target Board

Arduino from Evil Mad Scientist ATmegaxx8 Target Board

I have been making my own Arduino’s on strip-board but recently bought some of the Evil Mad Scientist ATmegaxx8 Target Boards. While they weren’t designed as an Arduino board they are perfect to use as they have: – places for the crystal and capacitors (XTL and C1, C2) or resonator – place for the power

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