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12voltman
A collection of keyboard layouts and designs that emphasize data input through two handed use of the number pad with a keyboard or arrow keys
| Reference | Value | Description |
|---|---|---|
| U1-U3 | 74HC595 | |
| U4 | nRF5340-QKxx | nRF5340, BLE, NFC, Thread, Zigbee, ARM M33 SoC, Dual Core, AQFN-94 |
| U5 | W25Q32JVZP | 32Mb Serial Flash Memory, Standard/Dual/Quad SPI, DFN-8 |
| U6,U11-U13 | AP22814AW5 | Current limited 3A power switch, single channel, SOT-23-5 |
| U7 | TS3USB30ERSWR | ESD-Protected, High-Speed USB 2.0 (480-Mbps) 1:2 Multiplexer/Demultiplexer Switch With Single Enable, UQFN-10 |
| U8 | USB2514B_Bi | USB 2.0 Hi-Speed Hub Controller |
| U9 |
| DS2745U |
| Current-flow, voltage and temperature measurement to support battery capacity monitoring, 2.5V to 4.5V VDD, -40 to +85 degree Celsius, TSSOP-8 |
| U10 | TSDP341xx | IR Receiver Modules for Data Transmission |
|---|
| C1 | 10uF |
|---|
| D1 | LED | Light emitting diode |
|---|
| D2-D7 | ESDUSB | Ultra low capacitance double rail-to-rail ESD protection diode, SOT-143 |
|---|
| F1 | Polyfuse | Resettable fuse, polymeric positive temperature coefficient |
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| H1,H2 | MountingHole | Mounting Hole without connection |
|---|
| J1 | Conn_01x45 |
|---|
| J2,J7-J9,J11 | USB_C_Receptacle_USB2.0_16P | USB 2.0-only 16P Type-C Receptacle connector |
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| J3 | USB_A | USB Type A connector |
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| J4 | Conn_01x02 |
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| J5 | Qwiic_I2C_connector |
|---|
| J6,J10,J12,J13 | Conn_01x15 | Generic connector, single row, 01x15, script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| JP3 | SolderJumper_3_Bridged123 |
|---|
| R1-R4 | 4.7k |
|---|
| SW2 | SW_Push | Push button switch, generic, two pins |
|---|
| SW3 | SW_SPDT | Switch, single pole double throw |
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| SW4 | RotaryEncoder_Switch | Rotary encoder, dual channel, incremental quadrate outputs, with switch |
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