Elite t1s hat
About the Elite t1s hat
Elite t1s hat is an open source PCB design by hwkim3330, published on GitHub under the MIT license. It is a 4-layer board measuring 66.2 × 49.2 mm, with 38 components from 20 distinct parts.
Other key parts include the LAN8651. By type, the board carries 16 capacitors, 9 resistors, 5 inductors, 2 connectors, 2 diodes and 1 IC.
It belongs with the dev boards & breakouts designs in this gallery.
From the project
10BASE-T1S HAT for the LilyGO T-ETH-Elite (ESP32-S3): Microchip LAN8651, 4-layer KiCad board generated from Python, JLCPCB-ready, node + bridge firmware, 3D models
Our own 10BASE-T1S board for the LilyGO T-ETH-Elite (ESP32-S3), built around a Microchip LAN8651 MAC-PHY. It replaces buying TSN Lab's ready-made HAT: same chip, same host header, our schematic.
Two source files govern this board and nothing here re-derives a number in either of them:
Everything is generated by maket1shat.py, which emits the symbol library, the two project-local footprints, the schematic and the PCB, then reads the board back and asserts every mechanical feature against GEOMETRY.md.
Main components on the Elite t1s hat
Elite t1s hat bill of materials (BOM)
38 components, 20 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LAN8651 | TQFN-32-1EP_5x5mm_P0.5mm_EP3.4x3.4mm_ThermalVias | U1 |
| 1 | C9006 25.000MHz CL12 | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | C480536 T1S BUS P N N P | PhoenixContact_MC_1,5_4-G-3.81_1x04_P3.81mm_Horizontal | CN1 |
| 1 | 2x20 socket (riser stack) | PinHeader_2x20_P2.54mm_Vertical | J1 |
| 2 | C2157827 220V(1mA) 1.5pF ESD (DNP) | Varistor_TDK_AVRH10_1005 | MOV1, MOV2 |
| 1 | C12624 GRN | LED_0603_1608Metric | D1 |
| 1 | C89811 YEL | LED_0603_1608Metric | D2 |
| 4 | C21189 0R (FB opt.) | L_0603_1608Metric | FB1, FB2, FB3, FB4 |
| 1 | C131444 200uH @ 100kHz CMC | L_CommonMode_TDK_ACT1210_3225 | L1 |
| 3 | 100NF/100V 100nF/100V | C_0805_2012Metric | C1, C2, C3 |
| 1 | C354262 4.7uF X7R | C_0805_2012Metric | C4 |
| 5 | 100NF 100nF | C_0603_1608Metric | C5, C7, C9, C11, C13 |
| 1 | 10UF 10uF | C_0805_2012Metric | C6 |
| 4 | 10NF 10nF | C_0603_1608Metric | C8, C10, C12, C14 |
| 2 | 18PF 18pF | C_0603_1608Metric | C15, C16 |
| 2 | C4014562 49R9 1% 1W (DNP) | R_1206_3216Metric | R1, R2 |
| 1 | C149504 100k 5% | R_0805_2012Metric | R3 |
| 3 | 10K 10k | R_0603_1608Metric | R4, R5, R6 |
| 1 | C22865 12k4 1% | R_0603_1608Metric | R7 |
| 2 | 1k | R_0603_1608Metric | R8, R9 |
Elite t1s hat design files
The KiCad project lives in the hwkim3330/elite-t1s-hat repository on GitHub; these links point at the commit this page was built from.
- Layouthardware/t1s_hat.kicad_pcb
- Schematichardware/t1s_hat.kicad_sch
- BOMhardware/bom.csv
Elite t1s hat: common questions
How big is the Elite t1s hat?
The Elite t1s hat measures 66.2 × 49.2 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Elite t1s hat?
38 components, from 20 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Elite t1s hat design files?
From the hwkim3330/elite-t1s-hat repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Elite t1s hat design in my own project?
Yes, under the terms of its MIT license, which hwkim3330 chose for the repository.
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