Acroname Blog

Driving Loads with High Power

Driving Loads with High Power blog post

Post date: 5 years 7 months ago
OVERVIEW A common automation system requirement is to drive or actuate high power loads using low level voltage signals. Motors, solenoids, relays and capacitive loads can be actuated with appropriate circuitry that is only possible using small current/voltage combinations often found in embedded...
Description of Pulse Width Modulation

Description of Pulse Width Modulation blog post

Post date: 6 years 3 months ago
PWM (Pulse Width Modulation) refers to the concept of rapidly pulsing a digital signal on a wire. Along with many other uses, it can be used to simulate a varying static voltage. PWM is commonly used for driving motors, heaters, LEDs or lights in varying intensities or speeds. TERMINOLOGY Period...
Back-EMF Motion Feedback

Back-EMF Motion Feedback blog post

Post date: 6 years 7 months ago
INTRODUCTION Electromotive force (EMF) refers to the voltage generated by a spinning motor. Measuring this voltage in order to determine the rotational speed of a motor is commonly called Back-EMF since the voltage tends to "push-back" against the circuit driving current into a motor's windings....
Reading a Photoresistor Asynchronously

Reading a Photoresistor Asynchronously blog post

Post date: 7 years 11 months ago
OVERVIEW Photoresistors are used in many applications because they either increase or decrease in resistance depending on the amount of light.  A common application for photoresistors is the triggering of an event when the light passes a certain point.  This example demonstrates the use of a...
Reading a Button State

Reading a Button State blog post

Post date: 8 years 8 months ago
OVERVIEW Buttons are an ideal basic example because they are easy to implement and are used in many applications that the user needs to interact with the system.  This example demonstrates how easy it is to configure the BrainStem to read digital pin data and use that data to execute another...
Flash an External LED

Flash an External LED blog post

Post date: 9 years 3 months ago
OVERVIEW LED's serve many purposes and can range in color from ultraviolet to infrared.  They can be used to detect light similar to the light they emit, serve as voltage references, and as a visual reference for active channels.  Since LED's have a large range of uses and are conceptually simple...
Reading a Potentiometer using Reflex

Reading a Potentiometer using Reflex blog post

Post date: 10 years 6 days ago
OVERVIEW Potentiometers are commonly used in applications where accurate manual adjustment of a setting is required.  The potentiometer changes its resistance depending on the location of the knob, causing a change in voltage that can be read and used to change a value.  This example demonstrates...
Reading a Photoresistor using Reflex

Reading a Photoresistor using Reflex blog post

Post date: 10 years 9 months ago
OVERVIEW Photoresistors are used in many applications because they either increase or decrease in resistance depending on the amount of light.  A common application for photoresistors is the triggering of an event when the light passes a certain point.  This example demonstrates the use of a...

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