# ESPARGOS/esp-sdr

> Firmware that turns the ESP32's built-in Wi-Fi radio into a software-defined radio (SDR): it captures raw I/Q samples and sends them to a computer over USB/UART for spectrum analysis. Supports most ESP32 chips, with 5 GHz reception on the ESP32-C5.

- Magnitude: 5.2 out of 10 — Early signal
- Stars: 105 total · +36 stars today, ≈ 67 by evening
- Star trust: star growth looks organic
- Category: Hardware, IoT & robotics · Language: C · Created: 2026-09-28 · Last push: 2026-09-29
- GitHub: https://github.com/ESPARGOS/esp-sdr · Homepage: https://espargos.net/espsdr/ · Page: https://gitnova.dev/en/r/ESPARGOS/esp-sdr

## Useful for

- Tune the ESP32 to a frequency and bandwidth via FREQ/BANDWIDTH and capture a spectrum snapshot with CAP16 for signal analysis.
- Write a Python client that reads the binary I/Q stream over UART and verifies the packet CRC32.
- Scan the 2400-2483.5 MHz band with several ESP32 boards to study Wi-Fi channel occupancy.

## Why it’s here

- 36 stars so far today, about 67 expected by the end of the day.
- The spike has held for 3 days in a row — not a one-off blip.
- The repository is 2 days old and already has 105 stars. With less than two weeks of history, there's no usual pace to compare the spike against yet.
- Top new repositories this week: #146.
- Hacker News: “ESP-SDR: Raw IQ Capture with Espressif's ESP32 Chips” — 6 points, 1 day ago.
- About 7 forks a day — people are taking the code.
- Recent forks include notable developers: @mildsunrise (571 followers).

## Star trust

Star growth looks organic.

Star-trust labels are heuristics based on the repository’s behavior, not a check of every stargazer.

## Numbers

- Forks: 12
- Issues and pull requests: 0
- Watchers: 1
- Average over the last week: 45 per day
- Usual pace: too little history (under two weeks)
- Stars in the last hour (measured): 5

## Stars per day, last 4 days (oldest → newest, today is partial)

2026-09-27 … 2026-09-30: 0, 7, 62, 36

## Hacker News

- ESP-SDR: Raw IQ Capture with Espressif's ESP32 Chips — 6 points, 0 comments: https://news.ycombinator.com/item?id=49882348

## Spotted in now

- Top new repositories this week: #146

## More in this category

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   Open-source 10.5 GHz phased array radar with pulse LFM modulation, available in 3 km and 20 km versions. Aimed at researchers, drone developers, and SDR enthusiasts who want to experiment with phased array radar.
   Full card: https://gitnova.dev/en/r/NawfalMotii79/PLFM_RADAR.md
2. **ios-bundles/CarrierSIM** — 4.3 · Early signal · Hardware, IoT & robotics · Python · +11 stars today, ≈ 30 by evening
   A macOS/Windows script that swaps the carrier profile in the iPhone's user Carrier Bundles directory, binding SIMs by IMSI to the Vodafone_hu bundle or another one to enable VoWiFi in Russia.
   Full card: https://gitnova.dev/en/r/ios-bundles/CarrierSIM.md
3. **Low-Zi-Hong/ESP32s3-LLM-Cluster** — 4.3 · Early signal · Hardware, IoT & robotics · C++ · +6 stars today, ≈ 23 by evening
   Distributed LLM inference engine across a 7-node ESP32-S3 cluster: the master runs the tokenizer and embeddings while nodes execute transformer layers of a 0.4B model with 1.58-bit (BitNet) ternary quantization, communicating over an SPI…
   Full card: https://gitnova.dev/en/r/Low-Zi-Hong/ESP32s3-LLM-Cluster.md
4. **ruvnet/RuView** — 4.2 · Breakout · Hardware, IoT & robotics · Rust · +51 stars today, ≈ 141 by evening
   A Rust WiFi-sensing platform that uses CSI data from cheap ESP32 boards to detect presence, breathing, heart rate, activity and pose without cameras or wearables. Runs locally on edge hardware with Home Assistant, Apple Home, Google Home…
   Full card: https://gitnova.dev/en/r/ruvnet/RuView.md
5. **seamusc/papermono-shopping-list** — 4.1 · Early signal · Hardware, IoT & robotics · C++ · +4 stars today, ≈ 10 by evening
   Firmware for the M5Stack PaperMono e-paper device that turns it into a fridge shopping list synced with a phone via a FastAPI server.
   Full card: https://gitnova.dev/en/r/seamusc/papermono-shopping-list.md

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Magnitude (0–10) measures how fast and how unusually interest in a repository is growing right now. It is not a quality score.
Days are UTC. “So far today” is a fact; “expected by the end of the day” is a forecast.
Summaries and use cases are written by an LLM (DeepSeek V4.1 Flash) from the README and may be inaccurate: verify specific claims (benchmarks, speed, hardware) in the repository itself.
Data as of 2026-09-30 12:34 UTC, updated every 30 minutes.