Simplest ultrasonic ANTISPY voice recording jammer based on ATTINY13 / ATTINY85/45/25 / ARDUINO with PAM8403 / TPA3116D2 module driving piezo ultrasonic transducers (and optionally AD8933 signal generator)

Simple soldering controller for hakko 936 type soldering iron. Based on attiny85.

This MCC based MPLAB X IDE example shows how to interface an electret microphone with a microcontroller (MCU) using the Analog Signal Conditioning (OPAMP). In addition to the microphone, only one resistor and one capacitor are required.

This MCC based MPLAB X example shows how to calibrate the gain and offset of the OPAMP when configured as a Programmable Gain Amplifier (PGA). The internal DAC and ADC are used to perform the calibration procedure. No external components are required.

This MCC based MPLAB X IDE example shows how to use the Analog Signal Conditioning (OPAMP) peripheral to implement a constant-current driver using just one external resistor. The constant current amperage setting can be adjusted using firmware control.

This project demonstrates the internal gain ladder of the OPA module by setting it to output various DC levels that are proportional to the internal resistor ratios.

(For My Teaching Tutorial Blog) It is an Utility class to read a number of swirches (push button) using only one analog input. With debouce .