Circuits & Schematics - Microcontrollers Usage - 11

Many of the sensors capturing information from the world around us are resistive. A few examples are NTC, PTC, LDR, contact sensors. If we convert the resistance of the sensors into frequency or pulse duration, these parameters can be measured by ...

This Design Idea (Figure 1) demonstrates a new method of driving six LEDs with only two I/O lines from a microcontroller, and so is particularly suitable for any pin-limited chip. It uses a pair of I/O lines combined with a pair of complementary ...

This project is pretty cool for a few reasons, and driving a huge LED matrix with a single 8-bit controller is just one of them. The idea was born when I bought 120 LEDs of the wrong type, and decided to do something with them. With that many LEDs, ...

There are several ways to read multiple switch inputs using a reduced number of microcontroller-unit (MCU) pins. For example, you can use an analog MCU pin to read multiple switches by assigning a unique voltage to each switch through a resistor ...

Part 1 Input Card The input cards come in several types, each tailored to a different type (or types) of input. The first input card we designed is capable of measuring temperature through either a thermistor or thermocouple. Work on the next input ...

PID stands for proportional-integral-derivative controller. This is a device used in control systems or simply to control other devices or other electronic systems. The main function of this controller is to help regulate or maintain the level of ...

William Swanson Electronic Design Low-voltage microcontrollers often need to control higher-voltage loads via high-side switching. This simple two-transistor circuit enables that control and provides over-voltage protection. Although ...

Application Note JN-AN-1166 Version 1.1 December 2013 This application note provides and describes a set of NXP software drivers for use with ‘smart lamps’. These software drivers are intended to be used in applications that run on ...

Application Note TB3103 October 2013 Mihnea Rosu-Hamzescu This technical brief describes a synchronous buck power supply, based on the PIC16F753 using 100% analog control for output regulation. The implementation has the advantage of not using any ...

Simple DACs realized by lowpass filtering microcontroller-generated pulse-width-modulated (PWM) signals have a response that is typically a tenth of the PWM frequency. This Design Idea is a novel implementation of a previously published method [ 1 ...