Low-Current Si5351-Based Digital VFO with Nokia Display
By ZL2PDA versatile digital VFO design utilizing the Silicon Labs Si5351a oscillator chip and Nokia 5110/3310 graphics LCD display, operating from 1-160MHz with dual VFO capability. This microcontroller-based system, powered by an ATmega328 processor, features rotary encoder tuning, selectable step sizes, RIT control, and comprehensive band memory functions. Drawing less than 40mA at 3.3V, it significantly improves upon previous DDS designs' power consumption while offering advanced features like S-meter display, VFO lock, and programmable BFO/CIO offsets. The design achieves flexible functionality through simple hardware implementation and efficient software architecture, making it particularly suitable for QRP and portable amateur radio applications.
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You will find this resource in just one category on our links directory. The title of the main category is Homebrew and it deals mainly with Amateur Radio homebrew projects and experiments. The link to this resource has been on our site since Friday Feb 28 2025, and it has been followed 9 times. So far no one has rated it yet. Be the first to rate it!
Last updated: 2025-02-28
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