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PIC16F877A-I/P programmed for the 2.5GHz 12-Digit Frequency Counter [0411112C.HEX] A PIC16F877A 8-bit microcontroller programmed for the High-Resolution Frequency Counter [0411112C.HEX]. This is a revised version of the firmware which has improved accuracy when measuring low-frequency signals and improved front panel button debouncing, as per Circuit Notebook May 2015. Cat No SC1045. Price: AUD $20.00 1  Add to trolley In stock: yes (3 available). Estimated dispatch time: 1-3 days Related to: Project: A 2.5GHz 12-digit Frequency Counter, Pt.1 (December 2012 [online issue]) Project: A 2.5GHz 12-Digit Frequency Counter, Pt.2 (January 2013 [print issue] [online issue]) Project: L-o-o-o-n-g Gating Times For The 12-Digit Counter (July 2014 [print issue] [online issue]) Other items relevant to these projects: 2.5GHz 12-Digit Frequency Counter Main PCB [04111121] ($20.00) Add to trolley 2.5GHz 12-Digit Frequency Counter Display PCB [04111122] ($12.50) Add to trolley 2.5GHz 12-Digit Frequency Counter Add-on PCB [04106141a/b] ($12.50) Add to trolley VK2828U7G5LF TTL GPS/GLONASS/GALILEO module with antenna and cable ($25.00) Add to trolley 2.5GHz 12-Digit Frequency Counter front panel [04111123] ($25.00) Add to trolley Firmware for the 2.5GHz 12-Digit Frequency Counter project [0411112C.HEX] (Free) Add to trolley 2.5GHz 12-Digit Frequency Counter Main PCB pattern (PDF download) [04111121] (Free) Add to trolley 2.5GHz 12-Digit Frequency Counter Display PCB pattern (PDF download) [04111122] (Free) Add to trolley Long Gating Time Add-on Module for the 2.5GHz 12-Digit Frequency Counter PCB pattern (PDF download) [04106141a/b] (Free) Add to trolley 2.5GHz 12-Digit Frequency Counter front and rear panel artwork (PDF download) [04111123] (Free) Add to trolley