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Search results: 387   Output: 21-30
  1. Francesc Casanellas EDN This design was done to get a sealed keypad for very wet environments (in my particular case, showers for swimming pools). The keypad needed to be able to detect slight pressure on a stainless steel plate 0.4 mm thick. Apart ...
  2. Dev Gualtieri Electronic Design By using a standard, low-cost PIC microcontroller with a short block of code that emulates a simple ramp-signal generator based on the venerable unijunction transistor (UJT), you can achieve smooth output and ...
  3. Noureddine Benabadji EDN Embedded systems frequently use HD44780 -type LCD displays as it is considered the most popular alphanumeric display controller. The interface comprises at least 14 pins: eight for data, three for control (EN, WR, RS), two ...
  4. Didier Juges EDN Many MCU designs are intended to control power to devices such as motors, actuators, or other electronic subsystems. This power switching usually involves using a power device like a bipolar transistor or MOSFET that the MCU ...
  5. Petre Petrov EDN 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 ...
  6. Benabadji Noureddine EDN 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 ...
  7. 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, ...
  8. Aruna Rubasinghe EDN 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 ...
  9. 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 ...
  10. 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 ...

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