Quantity   Component name
1 × ESP-12S WiFi module with integrated MCU
1 × RA-02 Radio module, controlled via SPI
1 × AMS1117-3.3 Power Management ICs / Linear Voltage Regulators and LDOs
2 × 10µf ceramic 1206 capacitor
2 × 22µf tantalum 1206 capacitor (polarized)
1 × 10µf tantalum 1206 capacitor (polarized)
2 × 0.1µf ceramic 1206 capacitor
1 × USB OTG connector power input
1 × Connector_PinHeader_2.54mm 1x4 pin as debug connector
2 × 220 Ohm 1206 resistor for LEDs
1 × 1 kOhm 1206 resistor to safely tie boot pin to ground
1 × 1206 "red" LED status LED
1 × 1206 "yellow" LED status LED