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LimesKey
Battery-powered portable Meshtastic mesh node. Custom 4-layer PCB (XIAO ESP32-C6 + E22P-915M30S LoRa + NEO-M9N GNSS), designed in KiCad for 915 MHz / ISED RSS-247.
| Reference | Value | Description |
|---|---|---|
| Q12 | AO3401A | -4.0A Id, -30V Vds, P-Channel MOSFET, SOT-23 |
| Q13 | BSS138 | 50V Vds, 0.22A Id, N-Channel MOSFET, SOT-23 |
| Q14,Q15 | 2N7002 | 0.115A Id, 60V Vds, N-Channel MOSFET, SOT-23 |
| U1 | ESP32-S3-WROOM-1 | RF Module, ESP32-S3 SoC, Wi-Fi 802.11b/g/n, Bluetooth, BLE, 32-bit, 3.3V, onboard antenna, SMD |
| U2 | QMC6309 | |
| U9 | NEO-M9N | GNSS Module NEO M8, VCC 2.7V to 3.6V |
| U10 |
| U11 | TPS259474LRPWR |
|---|
| U12 | E22P-915M30S |
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| U13,U14 | LM61460AASQRJRRQ1 |
|---|
| U15 | TPS259474ARPWR |
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| U16 | SN74LVC1G74 |
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| U17 | TCAL9539RTWR_C22445413 |
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| C1-C3,C8,C13,C15,C104,C105,C125,C129,C135,C145 | 2.2uF | Unpolarized capacitor, small symbol |
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| C4,C5,C9,C16,C100,C107,C116,C121,C124,C128,C130,C131,C134,C136 | 100nF | Unpolarized capacitor, small symbol |
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| C6,C7 | 7pF | Unpolarized capacitor, small symbol |
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| C10,C11,C14,C98,C99,C102,C106,C110,C111,C122,C126,C141-C143,C151,C152,C154,C168,C177 | 10uF | Unpolarized capacitor, small symbol |
|---|
| C12,C17,C94,C103,C117,C118,C123,C127,C132,C137,C138,C140,C146,C147,C156,C157,C163,C164,C167,C174,C176 | 1uF | Unpolarized capacitor, small symbol |
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| C93 | 22pF | Unpolarized capacitor, small symbol |
|---|
| C95,C115 | 47pF | Unpolarized capacitor, small symbol |
|---|
| C96,C97 | 10nF | Unpolarized capacitor, small symbol |
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| C101 | 4.7uF | Unpolarized capacitor, small symbol |
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| C108,C109,C161,C162 | 2.2nF | Unpolarized capacitor, small symbol |
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| C112,C159,C160 | 1nF | Unpolarized capacitor, small symbol |
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| C113,C114 | 1pF | Unpolarized capacitor, small symbol |
|---|
| C119,C120,C144,C148-C150,C155,C165,C166,C169-C173,C175 | 22uF | Unpolarized capacitor, small symbol |
|---|
| C153,C158 | 5.6pF | Unpolarized capacitor, small symbol |
|---|
| D1-D3 | ESDS314DBVR |
|---|
| D4 | 1N5819WS | Schottky diode, small symbol |
|---|
| D10 | TI ESD501 | Bidirectional transient-voltage-suppression diode |
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| D11 | LED Red | Light emitting diode |
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| D12 | LED Blue | Light emitting diode |
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| D13 | ESD501 | Bidirectional transient-voltage-suppression diode |
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| D14 | ESD351DPYR | Bidirectional transient-voltage-suppression diode |
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| D15 | RB531SM-30 | Schottky diode |
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| D16 | RB531SM-30T2R | Schottky diode |
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| D17,D19 | TPD1E10B06 |
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| D18 | PGB1010603 | Bidirectional transient-voltage-suppression diode |
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| D20 | SMF6.0A |
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| D21 | BAT54A | schottky barrier diode |
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| D22 | BAT54W | Schottky barrier diode, SOT-323 |
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| F1,F3 | 1A Hold | Resettable fuse, polymeric positive temperature coefficient, small symbol |
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| F2 | 2A Hold, 4A Trip | Resettable fuse, polymeric positive temperature coefficient, small symbol |
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| F4 | SMD0805B035TF | Resettable fuse, polymeric positive temperature coefficient, small symbol |
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| FB1 | BLM18HG601SN1D | Ferrite bead |
|---|
| FL1 | B39162B4327P810 | 1575MHz SAW filter, SMD 1411 |
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| FL2 | 0900LP15B0063001E |
|---|
| J1 | SPI BUS | Generic connector, single row, 01x06, script generated |
|---|
| J2 | I2C3 | Generic connector, single row, 01x04, script generated (kicad-library-utils/schlib/autogen/connector/) |
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| J3 | I2C1 | Generic connector, single row, 01x04, script generated |
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| J4 | I2C2 | Generic connector, single row, 01x04, script generated (kicad-library-utils/schlib/autogen/connector/) |
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| J5 | e-Ink Display Connector | Generic connectable mounting pin connector, single row, 01x08, script generated (kicad-library-utils/schlib/autogen/connector/) |
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| J6 | UART0 | Generic connector, single row, 01x03, script generated |
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| J11,J13 | Conn_Coaxial | coaxial connector (BNC, SMA, SMB, SMC, Cinch/RCA, LEMO, ...) |
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| J12 | Conn_Coaxial_Small | small coaxial connector (BNC, SMA, SMB, SMC, Cinch/RCA, LEMO, ...) |
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| J14 | GPIO_Expander | Generic connector, double row, 02x08, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| L2 | 47nH | SRF >= 2GHz |
|---|
| L3 | 470nH | Inductor, small symbol |
|---|
| L4 | 2.2uH | Inductor |
|---|
| L5 | 3.3uH 11A Sat | Inductor |
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| R1-R4 | 33 | Resistor, small symbol |
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| R5,R6,R12-R15,R18,R19,R69,R73,R75,R93,R95,R100 | 0 | Resistor,Resistor, small symbol |
|---|
| R7,R9,R20,R24-R26,R67,R76,R92,R94,R97,R101,R113,R119,R132,R133 | 10k | Resistor,Resistor, small symbol |
|---|
| R8 | 10M | Resistor, small symbol |
|---|
| R10,R11,R16,R17,R98 | 22 | Resistor, small symbol |
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| R21,R22,R68,R72 | 2.2k | Resistor,Resistor, small symbol |
|---|
| R23,R77,R79,R86,R91,R96,R105,R106,R108,R130,R131 | 100k | Resistor, small symbol |
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| R70 | 2k | Resistor, small symbol |
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| R71,R78,R99,R123,R124 | 1k | Resistor, small symbol |
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| R74 | 62 | Resistor |
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| R80,R83 | 150 | Resistor |
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| R81 | 37.4 | Resistor |
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| R82 | 4.7k | Resistor, small symbol |
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| R84 | 150k | Resistor, small symbol |
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| R85 | 215k | Resistor, small symbol |
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| R87 | 113k | Resistor, small symbol |
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| R88 | 6.65k | Resistor, small symbol |
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| R89 | 200k | Resistor, small symbol |
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| R90 | 301k | Resistor, small symbol |
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| R102 | 1M | Resistor, small symbol |
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| R103,R111,R117 | 100 | Resistor, small symbol |
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| R104,R107,R115,R121 | 402k | Resistor, small symbol |
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| R109,R110 | 6.04k | Resistor, small symbol |
|---|
| R114,R120 | 10 | Resistor, small symbol |
|---|
| R116 | 174k | Resistor, small symbol |
|---|
| R122 | 101k | Resistor, small symbol |
|---|
| R125 | 86.6k | Resistor, small symbol |
|---|
| R126 | 3.92k | Resistor, small symbol |
|---|
| R127 | 27.4k | Resistor, small symbol |
|---|
| R128 | 750 | Resistor, small symbol |
|---|
| R129 | 280k | Resistor, small symbol |
|---|
| SW1 | ESP_RESET | Push button switch, generic, two pins |
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| SW2 | BOOT | Push button switch, generic, two pins |
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| SW4 | RESET_GNSS | Push button switch, generic, two pins |
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| SW5 | SAFEBOOT_GNSS | Push button switch, generic, two pins |
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| TP7 | EN_3V3 | test point (alternative probe-style design) |
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| Y1 | 32.768KHz | Two pin crystal |
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| Y2 | SX1M4.000M10F30TNN |
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