U1 RFM95W-868S2 Low power long range transceiver module, SPI and parallel interface, 868 MHz, spreading factor 6 to12, bandwidth 7.8 to 500kHz, -111 to -148 dBm, SMD-16, DIP-16 U2 CH340G USB serial converter, UART, SOIC-16 U3 ATmega328P-A 20MHz, 32kB Flash, 2kB SRAM, 1kB EEPROM, TQFP-32 U4 AMS1117-3.3 1A Low Dropout regulator, positive, 3.3V fixed output, SOT-223 AE1 Antenna Antenna with extra pin for shielding AE2 Anten. Antenna with extra pin for shielding C1,C2,C7,C9 22pF Unpolarized capacitor, small symbol C3 100nF Unpolarized capacitor, small symbol C4,C6 0.1uF Unpolarized capacitor, small symbol C8 0.47uF Unpolarized capacitor, small symbol C10 1nF Unpolarized capacitor, small symbol C11 10uF Polarized capacitor, small US symbol D1 conn. Light emitting diode, small symbol D2,J4 Power Generic screw terminal, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/),Light emitting diode, small symbol