Rev 3.7
Current production — ZeeTK NE602A mixer, SJWCH5351 synthesizer.
Hardware Documentation
This page collects all hardware documentation for the NanoVNA-H and NanoVNA-H4, including schematics for every PCB revision, architecture diagrams, and reference materials. Files are hosted in the NanoVNA-H repository.
Schematics
Section titled “Schematics”NanoVNA-H (STM32F072)
Section titled “NanoVNA-H (STM32F072)”Rev 3.6.1
Added SMC5351 support, improved port isolation.
Rev 3.6
ST7789 display support, ILI9341 compatibility.
Rev 3.5
Improved power management, extended to 1.5 GHz+.
Rev 3.4
First widely-available NanoVNA-H revision.
NanoVNA-H4 (STM32F303)
Section titled “NanoVNA-H4 (STM32F303)”Rev 4.4
Current production — ZeeTK NE602A mixer, 480x320 display.
Rev 4.3
Initial H4 release with STM32F303 and ST7796S display.
Architecture Diagrams
Section titled “Architecture Diagrams”These diagrams illustrate the firmware and hardware architecture. Source files (.dot) are in the repository for editing with Graphviz.
Block Diagram
Hardware signal path from RF input through mixer, codec, and DSP.
Software Architecture
Source module relationships and call graph across all major files.
Threading Model
ChibiOS RTOS thread layout, priorities, and synchronization.
Frequency Coverage
Si5351 output modes, harmonic switching, and IF configuration.
Flash Layout
On-chip flash memory organization for F072 and F303 targets.
Reference Materials
Section titled “Reference Materials”User Guide
Official NanoVNA User Guide (2019-07-11).
ZeeTK NE602A Datasheet
Datasheet for the replacement mixer IC used in Rev 3.7+ hardware.
NanoVNASharp
Windows desktop application for controlling NanoVNA from a PC.
Photos
Section titled “Photos”NanoVNA-H Device
Rev 3.4 PCB
Bare PCB layout of the NanoVNA-H revision 3.4.
Original Schematic (Sheet 1)
High-resolution schematic sheet from the original 2019 design.
Related Pages
Section titled “Related Pages” Hardware Revisions Detailed revision history and component changes
Synth Variants Si5351, MS5351, SMC5351, SJWCH5351 differences
Display Controllers ILI9341, ST7789, ST7796S auto-detection
Pin Assignments MCU pin mapping for both targets