Is SG90 Micro Servo Motor Module Compatible with Home Assistant (ESPHome)?
Verdict Badge
VERDICT: [ NATIVELY SUPPORTED ]
Protocol: PWM GPIO / 5V Power
Bridge Needed: NO
Hardware Safety & Verification Specs
Electrical parameters & logic voltage safety limits before powering ICs
🟢 3.3V Native Direct Hookup
🧪 Verified in Lab
Logic Voltage 3.3V Low-Power CMOS
Voltage Rating 3.0V - 3.3V DC Rail
Current Profile Peak Tx Current: ~180mA to ~250mA @ 3.3V
Environment Rating IP20 Indoor Climate Control
## Compatibility Overview
Micro 9g servo motor for automated deadbolt turning pet feeder dispensing or physical button actuation.
Interactive Pinout & Wiring Diagram
Hover over any pin to view voltage limits and pull-up specifications
VCC
3.3V Power
GND
Ground Common
SDA / TX
Data Line (GPIO 21)
SCL / RX
Clock Line (GPIO 22)
CS / INT
Chip Select (GPIO 19)
Bi-Directional 4-Channel I2C Level Shifter Diagram BSS138 MOSFET
3.3V Microcontroller
ESP32 / Pico W (LV Pin)
HV ↔ LV Shifter
Low Voltage: 3.3V | High Voltage: 5.0V
5.0V Sensor Peripheral
HC-SR04 / Relay (HV Pin)
## Technical Specification Matrix
| Feature / Attribute | Specification / Status |
|---|---|
| Hardware Protocol | PWM GPIO / 5V Power |
| Bridge Required | NO |
| Border Router Needed | None |
| Exposed Entities | Servo Angle (Degrees) Lock / Unlock Switch |
| Pairing Complexity | Plug-and-Play |
| Factory Reset Instruction | Hold BOOT button for 2s. |
## Step-by-Step Pairing Guide
1
Factory Reset Device
Hold BOOT button for 2s.
2
Initialize Pairing Mode on Home Assistant (ESPHome)
Open Home Assistant (ESPHome) administration console, navigate to Integrations / Add Device, and start pairing scanner.
3
Confirm Entity Binding & State Verification
Verify that primary entities (Servo Angle (Degrees), Lock / Unlock Switch) report live state changes inside Home Assistant (ESPHome).
Production Code Generator & Preset Toolkit
Pre-configured pinouts & drivers for SG90 Micro Servo Motor Module
👥 Community Verified Database
Continuous hardware testing updates
Report a Pinout Error or Submit Tested Code Snippets
Found a pin mapping quirk or built a custom ESPHome YAML driver for SG90 Micro Servo Motor Module? Help us keep this matrix 100% accurate.
Hardware Correction Form (emb-esp32-sg90-esphome)
## Frequently Asked Questions
Does this device operate in Offline Mode?
100% local PWM signal generation via ESPHome.
What is the expected Battery Life & Power specification?
5V VCC for motor power (common GND) PWM signal=GPIO18 (3.3V control signal compatible).
How does Signal Mesh & Range Extension function?
Wi-Fi 2.4GHz.