![]() ![]() ![]() Sense and Sensibility – Written when the author was just 20, Austen’s first novel is still a delight to read over 200 years later. Illustration © Sam Wolfe Connelly for The Great Gatsby, The Folio Society The following were very close contenders – books with integrity and longevity, as well as those that are simply rollicking good reads. With so many titles to choose from, it was no easy task to pick out five favourites. ‘Skimp and save, turn the heating down, starve if necessary but don’t deprive yourself the unalloyed joy of this majestic edition’ Ulysses –James Joyce’s modernist masterpiece spans a single day took seven years to write and is one of the greatest novels of the 20th century. A Tale of Two Cities – We’re spoilt for choice with Dickens but we’ve selected his tale of love and revolution over orphans and spinsters.ġ. ![]() Shakespeare’s Sonnets – The master puts the English language through its paces in this intimate collection of work.Ģ. The Lord of the Rings – The trilogy that has sold over 100 million copies.ģ. Nineteen Eighty-Four – Big Brother is watching in Orwell’s satirical attack on the state.Ĥ. Some books are so powerful, poignant, loved and admired, that everyone should own a copy and, after much discussion, we’ve agreed on the five books that should be on your bookshelf.ĥ. Int ledPinGreen = 9 // LED connected to digital pin 9 int ledPinYellow = 10 // LED connected to digital pin 10 int ledPinRed = 11 // LED connected to digital pin 11 int monitorPin = 6 // used to scope the PWM output int analogPin = A3 // potentiometer output connected to analog pin 3 int val = 0 // variable to store the read value void setup () //define inputs and outputs If bookshelves could talk, what would they ask to be filled with? Would they love to be weighed down with the words of Shakespeare, proudly hold up tales of human achievement, or display prose that nurtures the soul? Below, you can toggle between views of each LED lit up from adjusting the potentiometer. You will find that as you decrease the resistance, more voltage is sent into the ADC and the PWM outputs will change from the green to yellow to red LEDs, respectively. Uploading the code onto the Arduino, you can now turn the potentiometer to vary the input voltage. Try it for yourself and see how the circuit responds. When I used the 3.3V supply, the results were not as desirable. This is why the 5V supply worked better for me. However, the PWM output resolution is one-fourth that of the ADC, so every time I used the ADC captured value variable I always divided it by 4, essentially scaling the ADC value to conform to the PWM resolution. Red corresponds to a clipping signal (too much coming through), yellow is a warning that the signal is close to clipping, and green is in the safe zone. Basically, I wanted to mimic audio level indicators that respond dynamically to audio levels. Lower voltages were sent to the green LED, higher voltages sent to the yellow LED, and the upper range of voltages set to the red LED. Moving to the code, beyond variable initializations and IO definitions, I expanded on the example I found in the analogWrite() documentation with a conditional if/else statement such that the analogWrite() function would write to a different PWM output depending on the captured ADC value. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |