Design Center
Design Ideas
Perform timing for microcontrollers without using timers 1/22/2009
Use the I/O "interrupt-on-change" feature to implement a medium-precision, long-period timer with low additional cost.Simple microcontroller-temperature measurement uses only a diode and a capacitor 12/5/2008
Discharging a capacitor through the reverse leakage of a PN junction allows you to measure ambient temperature.Microcontroller detects pulses 7/24/2008
A microcontroller detects output pulses in a device under test.Hot-swap circuit allows two computers to monitor an RS-232 channel 5/29/2008
A hot-swap serial-interface circuit allows two computers to monitor all the traffic on an RS-232 port.Tiny microcontroller hosts dual dc/dc-boost converters 5/15/2008
An Atmel AVR microcontroller can serve as the PWM controller for two dc/dc converters that provide high voltages from a two-cell supply.Microcontroller displays multiple chart or oscilloscope timing ticks 5/1/2008
A crystal controlled microcontroller generates precise timing ticks.Microcontroller moving-dot display interface uses three I/O lines 5/1/2008
A moving-dot LED-display interface to a microcontroller uses only three output pins.Circuit and software provide accurate recalibration for baseline PIC microcontroller’s internal oscillator 5/1/2008
A simple circuit and an assembly-language program allow you to recalibrate the internal oscillator of a PIC microcontroller.Three-state switch interface uses one microcontroller pin 2/21/2008
A single microcontroller I/O pin senses the state of a three-position switch.One microcontroller pin drives two LEDs with low quiescent current 2/7/2008
Two simple circuits allow a battery-powered microcontroller to drive two LEDs.ADVERTISEMENT
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