Spectrum analyzer

8 boards

KiCad boards from 6 GitHub repositories tagged “spectrum-analyzer”, the most starred first; open any of them in PCBKit.

4 layers80 × 50 mm
Demo board
tombueng/emcvisual
EMC/EMI near-field simulator for KiCad PCBs in the browser: 3D field view, virtual near-field probe, spectrum, CISPR 32 estimate, return-path hints. EMV-Simulation für Leiterplatten.
16 parts30BSD
2 layers74.9 × 100.3 mm
Spectrum analyzer
JadenS180/spectrum-analyzer
ESP32-based real-time audio spectrum analyzer with custom PCB design. Features INMP441 I2S microphone, SSD1306 OLED display, FFT processing, and real-time WiFi streaming to a browser-based visualizer via WebSockets.
11 parts2MIT
2 layers153 × 95.8 mm
Spekky Matrix
jc-SpaceXp/Spekky-Matrix
Spectrum analyser displayed on a LED matrix board connected to a STM32 device
390 parts1MIT
2 layers85 × 49 mm
2db per div
benishor/w7zoi-sa-2dB-per-div
2dB per division mod for W7ZOI/K7TAU spectrum analyzer.
27 parts
2 layers100 × 80 mm
G474 Integrated Analyzer
Larryhul/periodic-signal-analyzer
STM32G474 periodic signal analyzer: FFT harmonic measurement (Upp/Urms/fundamental/spectrum), OPA2365 front end, KiCad PCB, firmware & dashboard. 2026 Shanghai electronic design contest, Problem G. 周期信号测量分析装置
64 partsMIT
4 layers85.6 × 54 mm
Sound spectrum v1
path321/sound_spectrum_mcu
STM32-powered board to analyze sound from MEMS microphone
40 partsMIT
4 layers167 × 92 mm
作业三b NTC数字温度计底板预览
Larryhul/periodic-signal-analyzer
STM32G474 periodic signal analyzer: FFT harmonic measurement (Upp/Urms/fundamental/spectrum), OPA2365 front end, KiCad PCB, firmware & dashboard. 2026 Shanghai electronic design contest, Problem G. 周期信号测量分析装置
25 partsMIT
2 layers160 × 89.5 mm
KiCad工程
Larryhul/periodic-signal-analyzer
STM32G474 periodic signal analyzer: FFT harmonic measurement (Upp/Urms/fundamental/spectrum), OPA2365 front end, KiCad PCB, firmware & dashboard. 2026 Shanghai electronic design contest, Problem G. 周期信号测量分析装置
10 partsMIT