Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

All you need to know about frequency counters and building one

fpga frequency counter with Android connectivity

Andy Brown was working with embedded project where he needed to test oscillator accuracy. The first thought was to grab frequency counter on eBay and continue working. Bus somehow he ended up building his own counter with great characteristics and Android connectivity. He used FPGA to do the counting. FPGA is faster comparing to MCU. Its hardware like nature and parallel operations allow reacting to incoming signals much faster than MCU would do. He included STM32 microcontroller in his built to take care of logging and connectivity with external world. His frequency counter is able to precisely measure frequencies up to 50MHz. He took special care when designing reference oscillator, because the accuracy of counting depends on it. He built a prototype four layer board which includes Bluetooth module for… Continue reading

The Best Three in One Electronics Components That Has Ever Create!

Have you ever thought of combining the three different electronic components together? If you have not done it yet, then you should try it because it’s a fun experiment indeed! The three electronics components that you’re going to combine would be 50 MHz frequency counter, voltage meter and SWR/PWR indicator. This is a very cool project for all hobbyists. Basically, it’s a PIC16F876 based 4-digit LED frequency-counter and voltmeter. Don’t underestimate this stuff, as it is capable of driving 4 digit LED display in multiplexed mode while measuring frequency, power supply voltage or handle two analog inputs at once to display SWR/PWR signal strength in a bargraph! As a result, it doesn’t need any external LED display driver-chip or external data EEPROM, since it’s already implemented in PIC16F876. When fewer… Continue reading