Maker project
tk44
BOM009095 · TK44-PCB
What the project is · as the catalogue files it; the circuit functions below are BOM rule hits
Filed under “人机接口HMI” in the ezPLM catalogue.
Circuit functions included · BOM rule hits · not reviewed
- Low-dropout regulator (LDO)
- U3 XC6220-3.3V · by part number
- Battery charger
- U2 MCP73831 · by part number
- Key matrix / mechanical switches
- SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23, SW24, SW25, SW26, SW27, SW28, SW29, SW30, SW31, SW32, SW33, SW34, SW35, SW36, SW37, SW39, SW42, SW44 MX · by footprint
- SW38, SW40, SW41, SW43 MX · by footprint
Helper circuits
- Power input connector
- J1 BATT · by footprint
- Debug / programming header
- SW45 SW_DPDT · by part number
- J2 SWD · by part number
- USB connector (Type-C / Micro / A)
- J3 USB_C_Receptacle_USB2.0 · by part number
Online view
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21 rows · 116 parts0 of 21 rows placedHover or click a row to mark its parts in the view; click a part in the view to find its row.
Looks up part numbers and makers at ezPLM, DigiKey and Mouser. What it finds are suggestions: check one before you use it.
| Designators | Value | Part | Qty | Placed | |
|---|---|---|---|---|---|
| R1, R2 | 5.1KR_0603 | No part number | 2 | ||
| R3, R5 | 1KR_0603 | No part number | 2 | ||
| R4 | 810KR_0603 | No part number | 1 | ||
| R6 | 3.3KR_0603 | No part number | 1 | ||
| R7 | 2MR_0603 | No part number | 1 | ||
| R8 | 100KR_0603 | No part number | 1 | ||
| D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25, D26, D27, D28, D29, D30, D31, D32, D33, D34, D35, D36, D37, D38, D39, D40, D41, D42, D43, D44, D46 | 1N5819D_SOD-123 | No part number | 45 | ||
| D45 | BLUELED_0603 | No part number | 1 | ||
| D47 | REDLED_0603 | No part number | 1 | ||
| U1 | HOLYIOT-18010Holyiot-18010-nRF52840 | No part number | 1 | ||
| U2 | MCP73831SOT-23-5 | No part number | 1 | ||
| U3 | XC6220-3.3VSOT-23-5 | No part number | 1 | ||
| SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23, SW24, SW25, SW26, SW27, SW28, SW29, SW30, SW31, SW32, SW33, SW34, SW35, SW36, SW37, SW39, SW42, SW44 | MXSwitch_Mx_Hotswap_1u | No part number | 40 | ||
| SW38, SW40, SW41, SW43 | MXSwitch_Mx_Hotswap_1.25u | No part number | 4 | ||
| SW45 | SW_DPDTMSK-12C02 | No part number | 1 | ||
| H1, H2, H3, H4, H5, H6, H7, H8 | Hole_Mount_M4Hole_Mount_M4 | No part number | 8 | ||
| Q1 | AO3407SOT-23 | No part number | 1 | ||
| SWT1 | SW_PushK2-1187SQ | No part number | 1 | ||
| J1 | BATTInterface labelBattery_Connector | No part number | 1 | ||
| J2 | SWDInterface labelConnector_THT_1x4_2.54 | No part number | 1 | ||
| J3 | USB_C_Receptacle_USB2.0USB-C-C168688 | No part number | 1 |