FireBeetle 2 ESP32-UE (N16R2) IoT Board (16MB / 2MB PS, Ext Antenna)
ESP32 IoT board with 16 MB flash, 2 MB PSRAM, external antenna support via U.FL connector, dual power modes, and multiple programming options. The -UE suffix indicates external antenna output; use instead of the standard variant where RF range is a constraint.
Pinout
- USB InterfaceOfficial table 6 row 1
Program download and power supply, 4.75V-5.5V compatible
Type · power - Charging IndicatorOfficial table 6 row 2
Red LED for indicating charging status: 1. Off when fully charged or not charged; 2. On when charging; 3. Quick flash when powered by USB, and no battery connected.
Type · pin - User ButtonOfficial table 6 row 3
Controlled by pin IO27/D4
Type · digital io - Li-ion Battery PortOfficial table 6 row 4
Support 3.5V-4.2V
Type · power - Onboard RGB LightOfficial table 6 row 5
ESP32
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