Here is another fan controller design based on PIC microcontroller, this time it’s temperature controlled and can be used to monitor Hard Drive temperature and adjust the fan speed accordingly or as a case fan controller. This post following recently published articles like 2 Channel PC Fan Controller and PWM Fan Controller.Current Hardware/Software configuration supports 3 … Read more
In this post we’ll add a serial data transfer capability to a standard 7-Segment LED Display by using PCF8574 I/O Port expander IC with I2C interface.For similar design based on Arduino see this link. Usually in order to minimize required outputs for driving LED display a multiplexing techniques are used. Most frequent way is to connect … Read more
In this post we’ll review a simple interface for PCF8574 I2C 8-bit IO expander IC and PIC microcontroller. For similar Arduino based implementation click this link. The format of present post is similar to 2 recently published tutorials about I2C communication. PCF8591 I2C 8-bit A/D D/A converter and PCF8573P I2C Real Time Clock. All articles … Read more
In this short tutorial we’ll learn how to control PCF8591 I2C 8-bit A/D and D/A converter with PIC microcontroller. PCF8591 was already used in a number of recently published projects like Function Generator, also I’m planning to add it to PIC Development Board design in order to extend its functionality. PCF8591 has an ADC with … Read more
In this post I’m going to show you how to interface an I2C Real Time Clock – RTC with PIC microcontroller. Only a basic hardware configuration and a communication protocol are presented here. I’m planning to extend it to a more advanced design in a near future. Although PCF8573 was used a similar IC’s like … Read more