OWLOS WiFi Radar

A passive 2.4 GHz WiFi radar for ESP32 boards with a screen. It only listens, never transmits, and draws every network around as a blip with its name and signal. Walk around the flat and it works out where the routers are. Pick your board below and flash it straight from the browser.

How to flash

  1. Use Chrome or Edge on a computer. Flashing goes over Web Serial, phones and Firefox can't do it.
  2. Plug the board in with a USB cable that carries data (some only charge).
  3. Press the button of your board, pick its port and say yes to erase: whatever was on the board is replaced.
  4. No port in the list? On Windows the CH340 driver may be missing. Won't connect? Hold BOOT while you plug it in.
  5. Boards with touch ask you to press 5 crosses once, so the touch knows where the screen is. The 2.8" CYD is sold with different screens: if the picture looks wrong there, press BOOT.
the radar on the 2.8 inch board

2.8" CYD

"Cheap yellow display", ESP32, 320x240, resistive touch, 15-19 fps. Sold with different screens (ILI9341 or ST7789), this one build fits them all: if the picture looks wrong after flashing, press BOOT until it's right.
This browser can't flash. Use Chrome or Edge on a computer. Flashing needs the page over https.
the radar on the 3.5 inch board

3.5" CYD

ESP32, ST7796 480x320, resistive or capacitive touch (R and C versions). Bigger radar, about 8 fps.
This browser can't flash. Use Chrome or Edge on a computer. Flashing needs the page over https.
the radar on the round screen

1.28" round

Elecrow CrowPanel, ESP32-C3, GC9A01 240x240, capacitive touch. Its own round views: swipe for the next screen, tap the top of the glass to go back.
This browser can't flash. Use Chrome or Edge on a computer. Flashing needs the page over https.
the radar on the wide e-paper

5.79" e-paper

Elecrow CrowPanel, ESP32-S3, 792x272 in 4 greys. A dashboard to read from across the room, changes drawn on top without flashing. MENU = next screen, BACK = next network.
This browser can't flash. Use Chrome or Edge on a computer. Flashing needs the page over https.
the radar on the 4.2 inch e-paper

4.2" e-paper

Elecrow CrowPanel, ESP32-S3, 400x300 in 4 greys. Same as the 5.79" in one column. Pins and panel sequences are the ones ViewOwl runs on it.
This browser can't flash. Use Chrome or Edge on a computer. Flashing needs the page over https.
the radar at 480x320

3.5" RPi LCD (ILI9486)

Waveshare RPi LCD (A) on the OWLOSAirQuality board, ESP32, 480x320, no touch: BOOT picks the next network, hold it for the 360 turn.
This browser can't flash. Use Chrome or Edge on a computer. Flashing needs the page over https.