RFID-keyChain
About the RFID-keyChain PCB
RFID-keyChain is an open source PCB design by Computer4062, published on GitHub. It is a 2-layer board measuring 153 × 61.5 mm, with 59 components from 36 distinct parts.
Other key parts include the EM4095, CH340E, USBLC6-2SC6, SPX3819M5-L-3-3 and SPX3819M5-L-5-0. By type, the board carries 29 capacitors, 10 resistors, 7 ICs, 4 switches, 2 connectors and 2 diodes.
From the project
My KiCAD files
Main components on the RFID-keyChain
RFID-keyChain bill of materials (BOM)
59 components, 36 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | EM4095 | SO-16_3.9x9.9mm_P1.27mm | IC1 |
| 1 | ~ | LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | CH340E | MSOP-10_3x3mm_P0.5mm | U2 |
| 1 | USBLC6-2SC6 | SOT-23-6 | U3 |
| 1 | SPX3819M5-L-3-3 | SOT-23-5 | U4 |
| 1 | SPX3819M5-L-5-0 | SOT-23-5 | U5 |
| 1 | TP4056 | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias | U6 |
| 1 | Q_NMOS_GDS | SOT-23 | Q1 |
| 1 | 8MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | USB_C_Receptacle_USB2.0 | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | Conn_ARM_SWD_TagConnect_TC2030 | Tag-Connect_TC2030-IDC-FP_2x03_P1.27mm_Vertical | J2 |
| 1 | 125kHz | RFID_125kHz_Antenna_Coil | AE1 |
| 1 | 1000mAh | JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | BT1 |
| 3 | SW_Push | SW_SPST_TL3342 | SW1, SW2, SW3 |
| 1 | SW_SPDT | SW_SPDT_PCM12 | SW4 |
| 1 | OLED-128O064D | OLED-128O064D | DS1 |
| 1 | LED | LED_0402_1005Metric | D1 |
| 1 | 1N914 | D_DO-35_SOD27_P7.62mm_Horizontal | D2 |
| 9 | 470nF | C_0402_1005Metric | C1, C2, C4, C7, C8, C9, C10, C12 +1 |
| 4 | 10uF | C_0402_1005Metric | C3, C11, C13, C29 |
Show 16 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 15pF | C_0402_1005Metric | C5, C6 |
| 2 | 100nF | C_0402_1005Metric | C14, C18 |
| 1 | 2.2nF | C_0402_1005Metric | C15 |
| 1 | 1nF | C_0402_1005Metric | C16 |
| 2 | 22nF | C_0402_1005Metric | C17, C27 |
| 1 | 10nF | C_0402_1005Metric | C19 |
| 1 | 6.8nF | C_0402_1005Metric | C20 |
| 2 | 10u | C_0402_1005Metric | C21, C22 |
| 2 | 1u | C_0402_1005Metric | C23, C24 |
| 2 | 4u7 | C_0402_1005Metric | C25, C26 |
| 2 | 0R | R_0402_1005Metric | R1, R6 |
| 4 | 5k1R | R_0402_1005Metric | R2, R4, R5, R10 |
| 1 | 100kR | R_0402_1005Metric | R3 |
| 1 | 1k | R_0402_1005Metric | R7 |
| 1 | 1k2 | R_0402_1005Metric | R8 |
| 1 | 390k | R_0402_1005Metric | R9 |
RFID-keyChain design files
The KiCad project lives in the Computer4062/RFID-keyChain repository on GitHub; these links point at the commit this page was built from.
- Layoutelectronics/reader.kicad_pcb
- Schematicelectronics/reader.kicad_sch
RFID-keyChain: common questions
How big is the RFID-keyChain PCB?
The RFID-keyChain measures 153 × 61.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the RFID-keyChain?
59 components, from 36 distinct parts. The full bill of materials is listed on this page.
Where can I download the RFID-keyChain design files?
From the Computer4062/RFID-keyChain repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the RFID-keyChain design in my own project?
The repository has no license, so all rights stay with Computer4062. Use it as a reference, and ask the author before reusing the design.