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Yet another LC meter using PIC16F628A

Posted on October 2, 2014 by R-B Leave a comment

DIY LC meter projects are very popular among hobbyists and students. Here is another LC meter project which is based on PIC16F628A microcontroller. It uses a tank oscillator circuit combining a few external components and PIC’s internal comparator module. The L and C values are computed from the resonant frequency of the LC tank circuit. The project also incorporated auto-calibration by shorting the test leads. The meter uses a standard 2×16 character LCD for display.

Charming 8x8x8 RGB LED cube

Posted on October 1, 2014 by R-B Leave a comment

Check out this another 8x8x8 RGB LED cube controlled by Arduino. The 512 RGB LEDs are driven by 25 74HC595 shift registers using multiplexing. For those unfamiliar with LED cubes, they are simply a 3-dimensional array of LEDs that make for interesting displays. My project here is not the first RGB LED cube, nor is it the best, but I am documenting my process because while designing this cube I appreciated every resource on 8x8x8 RGB LED cubes I could find. My goals for this project were to create an 8x8x8 multicolor (RGB) LED cube cleanly. That is, with all

Microchip announced a new addition to its PIC12/16LF155X 8-bit microcontroller (MCU) family featuring dual ADC peripheral

Posted on October 1, 2014 by R-B Leave a comment

Microchip Technology expands low-cost 8-bit PIC® Microcontroller portfolio with new devices featuring dual ADC peripheral. Microchip Technology Inc., a leading provider of microcontroller, mixed-signal, analog and Flash-IP solutions, today announced a new addition to its PIC12/16LF155X 8-bit microcontroller (MCU) family with the PIC16LF1554 and PIC16LF1559 (PIC16LF1554/9) devices. The PIC16LF1554/9 includes two independent 10-bit 100K samples per second Analog-to-Digital Converters (ADC) with hardware Capacitive Voltage Divider (CVD) support for capacitive-touch sensing. This unique ADC configuration enables more efficient sensor acquisition and assists with advanced touch-sensing techniques for extremely noisy environments, low-power applications, matrix keypads and water-resistant designs. Read the full story!

STM32 powered miniature power supply

Posted on September 30, 2014 by R-B Leave a comment

This compactly designed power supply uses STM32 microcontroller to compute the power supply output voltage and load current, and display these parameters on a RGB OLED display. The input to this power supply is a 24V DC , and the output can be varied from 0V to 24V at 0A to 3A.

PIC Microcontroller based resistor decade box

Posted on September 28, 2014 by R-B 2 comments

The old resistor decade boxes consisted of a bunch of rotary switches which make them little bulky and expensive. Stynus has built this microcontroller-based resistor decade box that uses one rotary encoder and 16 relay switches to switch on the various resistances. The microcontroller used in this project is PIC16F84A.

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