| Q1,Q2 | NPN | Bipolar transistor symbol for simulation only, substrate tied to the emitter |
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| Q3,Q6 | NMOS | N-MOSFET transistor, drain/source/gate |
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| Q4,Q5 | PMOS | P-MOSFET transistor, drain/source/gate |
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| U1 | ESP32-WROOM-32 | RF Module, ESP32-D0WDQ6 SoC, Wi-Fi 802.11b/g/n, Bluetooth, BLE, 32-bit, 2.7-3.6V, onboard antenna, SMD |
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| U2,U3 | SFH617A-1X016 | Optocoupler, Phototransistor Output, 5300 VRMS, VCEO 70V, CTR% 40-80, -55 to +110 degree Celsius, VDE, UL, BSI, FIMKO, cUL, wide THT PDIP-4 |
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| C1-C7 | 100nF | Unpolarized capacitor, small symbol |
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| D1-D7 | PESD3V3S1UL | Unidirectional ESD protection diode, 3.3V, SOD-882 |
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| J1,J2,J5 | Screw_Terminal_01x02 | Generic screw terminal, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
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| J3 | Screw_Terminal_01x03 | Generic screw terminal, single row, 01x03, script generated (kicad-library-utils/schlib/autogen/connector/) |
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