Hi
I am trying to build a very simple ultrasonic range finder. I have 12f675 on hand and wanted to use them but they lack CCP so i cannot use pwm. However as i understand the pwm would also only be able to manage 20Khz and not the 40Khz I require. I also wanted to use the FreqOut function but that also only does 10Khz Max. Please gimme some direction as i would love to remove the 555 I am using at the moment. I want something will not require "calibration" and should have super low (like 1) part count.
I am trying to build a very simple ultrasonic range finder. I have 12f675 on hand and wanted to use them but they lack CCP so i cannot use pwm. However as i understand the pwm would also only be able to manage 20Khz and not the 40Khz I require. I also wanted to use the FreqOut function but that also only does 10Khz Max. Please gimme some direction as i would love to remove the 555 I am using at the moment. I want something will not require "calibration" and should have super low (like 1) part count.