Making a buzzer sound Discuss max current draws on the Raspberry Pi. V = IR For GPIO pins this means 3.3 = 0.016 R R= 3.3/0.016 R= 206.25 Ohms Therefore the lowest resistance we can have in a output circuit is 206.25 Ohms How to use the debugger to examine buzzer code. Using the "time" calls and turning the output pin on and off make the buzzer sound The buzzer sound is too low just using the GPIO pin so we need one of two things A transistor to amplify the signal from the GPIO pin without increasing the current draw on the GPIO pin A passive buzzer board that has a power and signal input. Extension activity making the buzzer sound using PWM What are the limits of changing the frequency. Possible reasons why. Programming today Finish of variables from last week. Looping For, While Add up numbers 1-100 Using for loop Functions (intro) Scope of blocks (counter inside function) use of the global keyword. Homework Using a while loop add Fibonacci numbers and output...
Comments
Post a Comment