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YuriySm
Small 1W LoRA on Seeed Studio XIAO nRF52840 PCB for Meshtastic (fork of Ikoka Nano)
| Reference | Value | Description |
|---|---|---|
| Q1 | AO3401A | -4.0A Id, -30V Vds, P-Channel MOSFET, SOT-23 |
| Q2 | BC848 | 0.1A Ic, 30V Vce, NPN Transistor, SOT-23 |
| U1 | Seeed Studio XIAO nRF52840 | |
| U2 | E22-900M30S | SX1262 868/915 MHz 1w SPI LoRa Module |
| U3 | MT3608B | High Efficiency 1.2MHz 2A Step Up Converter, 2-24V Vin, 28V Vout, 4A current limit, 1.2MHz, SOT23-6 |
| C1,C2 | 47uF | Unpolarized capacitor |
| C3,C4 | 22uF | Unpolarized capacitor |
| C5 | 10nF | Unpolarized capacitor |
| D1,D2 | DSK26 | Schottky diode |
| J1 | Qwiic_RA | Generic connectable mounting pin connector, single row, 01x04, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J2 | Solar | Generic connectable mounting pin connector, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J3,J4 | Battery | Generic connectable mounting pin connector, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
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| J5 | V+ | Generic connector, single row, 01x01, script generated (kicad-library-utils/schlib/autogen/connector/) |
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| J6 | V- | Generic connector, single row, 01x01, script generated (kicad-library-utils/schlib/autogen/connector/) |
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| J7 | + | Generic connector, single row, 01x01, script generated (kicad-library-utils/schlib/autogen/connector/) |
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| J8 | - | Generic connector, single row, 01x01, script generated (kicad-library-utils/schlib/autogen/connector/) |
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| L1 | FXL0420-2R2-M | Inductor |
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| R1,R3 | 300k | Resistor |
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| R2 | 39k | Resistor |
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| R4,R5 | 1k | Resistor |
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| R6 | 10k | Resistor |
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| SW1 | SW_Push | Push button switch, generic, two pins |
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