Twilight2
About the Twilight2 PCB
Twilight2 is an open source ESP32 PCB design by elkel53930, published on GitHub. It is a 4-layer board measuring 80 × 80 mm, with 161 components from 61 distinct parts.
Its main chip is the ESP32-S3-FN8, from the ESP32 family. Other key parts include the 74LVC1G07SE-7, ADCS7476, BD63573NUV, LSM6DSR and OKL-T/6-W12N-C. By type, the board carries 49 capacitors, 37 resistors, 19 ICs, 16 transistors, 13 connectors and 13 diodes.
From the project
A robosweep agent Twilight-2
Main components on the Twilight2
Twilight2 bill of materials (BOM)
161 components, 61 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74LVC1G07SE-7 | SOT-353_SC-70-5 | U1 |
| 4 | ADCS7476 | SOT-23-6 | U2, U3, U6, U7 |
| 2 | BD63573NUV | VSON-10-1EP_3x3mm_P0.5mm_EP1.2x2mm | U4, U5 |
| 1 | LSM6DSR | Bosch_LGA-14_3x2.5mm_P0.5mm | U10 |
| 1 | OKL-T/6-W12N-C | OKL-T&slash_6-W12N-C_MUR | U11 |
| 1 | XC6221B332MR | SOT-23-5 | U12 |
| 2 | LM74700QDBVRQ1 | SOT-23-6 | U13, U15 |
| 1 | MCP73213T-A6SI/MF | DFN-10-1EP_3x3mm_P0.5mm_EP1.58x2.35mm | U14 |
| 2 | FT231XQ-R | QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | U16, U17 |
| 1 | SL2.1A | SOP-16_3.9x9.9mm_P1.27mm | U18 |
| 1 | INA219AIDCN | SOT-23-8 | U19 |
| 1 | ATmega328P-AU | TQFP-32_7x7mm_P0.8mm | U20 |
| 1 | ESP32-S3-FN8 | QFN-56-1EP_7x7mm_P0.4mm_EP4x4mm | U22 |
| 2 | DTC114E | SOT-723 | Q1, Q2 |
| 4 | ST-1KL3A | ST-1KL3A | Q3, Q4, Q5, Q6 |
| 6 | IRLML6344 | SOT-23 | Q7, Q8, Q9, Q10, Q15, Q16 |
| 3 | DMT6008LFG | Diodes_PowerDI3333-8 | Q11, Q12, Q13 |
| 1 | MMBT3904 | SOT-23 | Q14 |
| 1 | CSTCE16M0V53-R0 | Resonator_SMD_Murata_CSTxExxV-3Pin_3.0x1.1mm | X1 |
| 1 | 830108208709 | Oscillator_SMD_ECS_2520MV-xxx-xx-4Pin_2.5x2.0mm | X2 |
Show 41 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | X322512MSB4SI | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2 |
| 1 | ~ | JST_ZH_B7B-ZR-SM4-TF_1x07-1MP_P1.50mm_Vertical | J1 |
| 1 | Conn_01x22_Female | Hirose_FH12-22S-0.5SH_1x22-1MP_P0.50mm_Horizontal | J2 |
| 2 | PinHeader | PinHeader_1x03_P2.54mm_Vertical | J3, J14 |
| 2 | Conn_01x02 | JST_ZH_B2B-ZR-SM4-TF_1x02-1MP_P1.50mm_Vertical | J4, J5 |
| 3 | B6B-ZR | JST_ZH_B6B-ZR-SM4-TF_1x06-1MP_P1.50mm_Vertical | J6, J8, J13 |
| 1 | B4B-ZR | JST_ZH_B4B-ZR_1x04_P1.50mm_Vertical | J7 |
| 1 | B2B-ZR | JST_ZH_B2B-ZR_1x02_P1.50mm_Vertical | J9 |
| 1 | MJ-179PH | PJ-002A | J10 |
| 1 | Fan motor | PinHeader_1x02_P2.54mm_Vertical | J16 |
| 1 | 1000mAh LiPo 2S | JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | BT1 |
| 1 | SMT-0440-T-2-R | SMT-0440-T-2-R | LS1 |
| 1 | ComputeModule4 | Raspberry-Pi-4-Compute-Module | Module1 |
| 6 | TS-1088-AR02016 | PUSH SW 4x3mm | SW1, SW2, SW3, SW4, SW5, SW6 |
| 3 | D-060306G1/SS2/G1 | LED_0603_1608Metric | D1, D2, D9 |
| 3 | KT-0603R | LED_0603_1608Metric | D3, D10, D11 |
| 4 | SFH4550 | SFH4550 | D4, D5, D6, D7 |
| 1 | 1N5819WS | D_SOD-323 | D8 |
| 1 | WS2812B-2020 | LED_WS2812B-2020_PLCC4_2.0x2.0mm | D12 |
| 1 | BAS516 | D_SOD-523 | D13 |
| 2 | NR6045T100M | L_Changjiang_FNR6040S | L1, L2 |
| 2 | 1005 N/M | C_0402_1005Metric | C1, C13 |
| 1 | 0603 50V 0.1uF | C_0201_0603Metric | C2 |
| 19 | GRM033R61A104KE15D | C_0201_0603Metric | C3, C4, C5, C6, C8, C14, C15, C16 +11 |
| 1 | GRM033R61A105ME44D | C_0201_0603Metric | C7 |
| 4 | CL10A105KB8NNNC | C_0603_1608Metric | C9, C10, C33, C34 |
| 6 | CL21A106KAYNNNE | C_0805_2012Metric | C11, C12, C24, C29, C37, C39 |
| 4 | CL10A475KO8NNNC | C_0603_1608Metric | C17, C45, C46, C47 |
| 3 | CL32A107MPVNNNE | C_1210_3225Metric | C18, C48, C49 |
| 6 | CC0603KRX7R9BB104 | C_0603_1608Metric | C21, C22, C23, C30, C31, C32 |
| 3 | CL10A106KP8NNNC | C_0603_1608Metric | C26, C27, C28 |
| 15 | RC0201FR-071KL | R_0201_0603Metric | R1, R2, R3, R4, R11, R21, R22, R24 +7 |
| 4 | 0603WAF4700T5E | R_0603_1608Metric | R5, R6, R7, R8 |
| 1 | 0603WAF1501T5E | R_0603_1608Metric | R9 |
| 9 | RC0201FR-0710KL | R_0201_0603Metric | R10, R13, R14, R15, R16, R17, R23, R35 +1 |
| 1 | 0603WAF1000T5E | R_0603_1608Metric | R12 |
| 3 | 0603WAF1001T5E | R_0603_1608Metric | R18, R34, R36 |
| 1 | 0603WAF3300T5E | R_0603_1608Metric | R19 |
| 1 | 0603WAF100JT5E | R_0603_1608Metric | R20 |
| 1 | 25121WF500MT4E | D_2512_6332Metric | R29 |
| 1 | 1005 470 1% | R_0402_1005Metric | R31 |
Twilight2 design files
The KiCad project lives in the elkel53930/twilight2 repository on GitHub; these links point at the commit this page was built from.
Twilight2: common questions
What microcontroller does the Twilight2 use?
The Twilight2 is built around the ESP32-S3-FN8, from the ESP32 family.
How big is the Twilight2 PCB?
The Twilight2 measures 80 × 80 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Twilight2?
161 components, from 61 distinct parts. The full bill of materials is listed on this page.
Where can I download the Twilight2 design files?
From the elkel53930/twilight2 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Twilight2 design in my own project?
The repository has no license, so all rights stay with elkel53930. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Twilight2 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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