An iroh powered smart fan

a month ago

The article demonstrates creating a smart fan using an ESP32 with Iroh, enabling remote temperature sensing and fan control without cloud components.
It covers setting up the ESP32 with Iroh, adding a DHT22 sensor, implementing an IRPC protocol for remote communication, and developing a WebAssembly GUI for browser-based control.
The project evolves from a simple echo server to a fully functional smart fan with authentication for setting temperature thresholds, and includes a 3D-printed enclosure for a finished product.

The author replaced their bedroom ceiling fan with a cloud-controlled Dreo fan and wanted local control via Home Assistant to avoid cloud dependencies.
They decoded the RF remote's commands by identifying the carrier frequency, modulation method (ASK/OOK), and payload structure, using an RTL-SDR to capture and analyze the signal.
To replay commands, they used a Xiao ESP32-C6 board with an RFM69HCW transceiver, manually toggling the data pin with decoded pulse timings and debugging with the RTL-SDR.

The project is a fun lazy Saturday activity after a busy week, where an ESP32-C3 and 1.28-inch round display create a live aircraft radar using ADS-B data.
The build required light soldering, but was easy and quick (about 15 minutes) using silicone wires and browser-based ESPHome flashing.
The original 3D model from Makerworld looked good but had tight tolerances, so a replacement model was printed.

QuadRF is a phased-array radio built with Raspberry Pi 5 and an FPGA, capable of advanced signal processing and beamforming.
It can detect WiFi through walls and track drones, with open-source potential hinting at more advanced government capabilities.
QuadRF includes software for RF streaming/decoding, useful for WiFi analysis, and connects via a browser-based VNC interface.

Fresh is a powerful terminal text editor and IDE with instant startup and low memory footprint.
It handles large files efficiently and supports remote editing over SSH.
Features include split-panel review for Git with staged/unstaged/untracked files, side-by-side diff views, and export to Markdown.

The author collects disposable vapes and discovered they contain a PUYA PY32 microcontroller (ARM Cortex-M0+).
The chip is a PY32F002B with 24 MHz Cortex M0+, 24 KiB flash, and 3 KiB RAM.
They used semihosting (debugger syscalls) and SLIP to emulate a modem over serial, enabling IP networking.

The author replaced their bedroom ceiling fan with a cloud-controlled Dreo fan and wanted local control via Home Assistant to avoid cloud dependencies.
They decoded the RF remote's commands by identifying the carrier frequency, modulation method (ASK/OOK), and payload structure, using an RTL-SDR to capture and analyze the signal.
To replay commands, they used a Xiao ESP32-C6 board with an RFM69HCW transceiver, manually toggling the data pin with decoded pulse timings and debugging with the RTL-SDR.

The project is a fun lazy Saturday activity after a busy week, where an ESP32-C3 and 1.28-inch round display create a live aircraft radar using ADS-B data.
The build required light soldering, but was easy and quick (about 15 minutes) using silicone wires and browser-based ESPHome flashing.
The original 3D model from Makerworld looked good but had tight tolerances, so a replacement model was printed.

QuadRF is a phased-array radio built with Raspberry Pi 5 and an FPGA, capable of advanced signal processing and beamforming.
It can detect WiFi through walls and track drones, with open-source potential hinting at more advanced government capabilities.
QuadRF includes software for RF streaming/decoding, useful for WiFi analysis, and connects via a browser-based VNC interface.

Fresh is a powerful terminal text editor and IDE with instant startup and low memory footprint.
It handles large files efficiently and supports remote editing over SSH.
Features include split-panel review for Git with staged/unstaged/untracked files, side-by-side diff views, and export to Markdown.

The author collects disposable vapes and discovered they contain a PUYA PY32 microcontroller (ARM Cortex-M0+).
The chip is a PY32F002B with 24 MHz Cortex M0+, 24 KiB flash, and 3 KiB RAM.
They used semihosting (debugger syscalls) and SLIP to emulate a modem over serial, enabling IP networking.

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