Microcontrollers L10 (FOLLOWER REQUEST @ha_rshit_p9829): an ESP32-S3 project — the Wi-Fi signal hunter
An ESP32-S3 scans nearby Wi-Fi networks, shows each one's strength in dBm with bars on an I²C OLED (SDA 8, SCL 9), an SMA antenna gives more range; −30 dBm is strong, −90 almost nothing.
You asked, @ha_rshit_p9829: a project for the ESP32-S3 + an OLED + an SMA antenna? 📡
👉 Build a Wi-Fi SIGNAL HUNTER!
1️⃣ The ESP32-S3 scans every network nearby (WiFi.scanNetworks()) and reads each one's strength in dBm (WiFi.RSSI(i)).
2️⃣ The 0.96" OLED shows the list + signal bars. Wiring: VCC → 3.3 V, GND → GND, SDA → GPIO 8, SCL → GPIO 9 (I²C address 0x3C, Adafruit SSD1306 library).
3️⃣ The SMA antenna screws on for much better range — always fit it BEFORE you power the board.
📶 Which is strong? −30 dBm! Closer to zero wins. −67 is fine, −80 is weak, −90 is almost nothing.
🏠 Then walk around your home and find the Wi-Fi dead spots.
Level up: add a buzzer that beeps faster as the signal gets stronger, and hunt down your router!
Read the voiceover (transcript)
- Your ESP32 S3 project!
- Build a Wi-Fi signal hunter with an OLED!
- It scans every network nearby and shows its strength.
- The SMA antenna screws on, for much better range!
- Which one is the strong signal?
- Minus thirty! Near zero wins.
- Then find your dead spots!
- Next: the STM32 chip. Follow for Part 11!
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