# CUSTOM-BOARD 
IT IS A DEVLOPMENT BOARD USING ESP32=S3R8 WITH 16MB FLASH 

<img width="1075" height="817" alt="Screenshot 2026-01-02 022046" src="https://github.com/user-attachments/assets/67d19183-fa4c-4b64-ac1a-73e378259e8f" />
<img width="883" height="735" alt="Screenshot 2026-01-02 022112" src="https://github.com/user-attachments/assets/e5f67d7e-d18c-4598-9ce6-5e631f424c65" />

## feature
• ESP32-S3 series of SoCs embedded, Xtensa®
dual-core 32-bit LX7 microprocessor (with
single precision FPU), up to 240 MHz
• 384 KB ROM
• 512 KB SRAM
• 16 KB SRAM in RTC
• Up to 16 MB PSRAM

## BOM
| Item              | Cost  | Note               |
| ----------------- | ----- | ------------------ |
| PCB               | 14.18  | 4-Layers           |
| PCBA              | 99.82 | Kinda Dense board  |
| Shipping charges  | 14.08  |                    |
| coupon Discount   | \-6   |                    |
| Total             | 122.70 | USD                |


# PCB 
This is 4 layer PCB
## 1st layer 
<img width="423" height="602" alt="Screenshot 2026-01-01 201641" src="https://github.com/user-attachments/assets/68919056-bfde-4529-80e7-29e3e3068224" />

## 2nd layer 
<img width="413" height="576" alt="Screenshot 2026-01-01 201755" src="https://github.com/user-attachments/assets/1fe16a14-7db5-42b0-84f7-5846c47a5bf8" />

## 3rd layer 
<img width="488" height="651" alt="Screenshot 2026-01-01 201741" src="https://github.com/user-attachments/assets/ce553288-3019-4bcc-a847-f903163e3432" />

## 4th layer
<img width="377" height="590" alt="Screenshot 2026-01-01 201707" src="https://github.com/user-attachments/assets/b735056b-c8ed-41b6-aa0c-e9a2a42bec72" />

 
## PCB component 

|                         |                   |                                                                         |                                     |               |                  |                         |                             |                 |                                                                                                                                                                |                                                            |                                                                                                            |               |                                                                           |          |     |           |                 |
|-------------------------|-------------------|-------------------------------------------------------------------------|-------------------------------------|---------------|------------------|-------------------------|-----------------------------|-----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------|------------------------------------------------------------------------------------------------------------|---------------|---------------------------------------------------------------------------|----------|-----|-----------|-----------------|
|                         |                   |                                                                         |                                     |               |                  |                         |                             |                 |                                                                                                                                                                |                                                            |                                                                                                            |               |                                                                           |          |     |           |                 |
|                         |                   |                                                                         |                                     |               |                  |                         |                             |                 |                                                                                                                                                                |                                                            |                                                                                                            |               |                                                                           |          |     |           |                 |
|                         |                   |                                                                         |                                     |               |                  |                         |                             |                 |                                                                                                                                                                |                                                            |                                                                                                            |               |                                                                           |          |     |           |                 |
| Top Designator          | Bottom Designator | Comment                                                                 | Footprint                           | JLCPCB Part # | Matches          | Part #                  | Manufacturer                | Footprint       | Description                                                                                                                                                    | Category                                                   | Warning                                                                                                    | JLCPCB Part # | Product link                                                              | Lib Type | Qty | Source    | Total Price ($) |
| C2                      |                   | 100nF                                                                   | C0402                               |               | Select by System | CL05B104KO5NNNC         | Samsung Electro-Mechanics   | 0402            | 100nF 16V X7R ±10% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS                                                                                      | Multilayer Ceramic Capacitors MLCC - SMD/SMT               |                                                                                                            | C1525         | https://jlcpcb.com/partdetail/1877-CL05B104KO5NNNC/C1525                  | Basic    | 35  | 35 JLCPCB | 0.042           |
| C25,C26,C27,C28         |                   | 100nF                                                                   | C0402                               |               | Select by System | CL05B104KO5NNNC         | Samsung Electro-Mechanics   | 0402            | 100nF 16V X7R ±10% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS                                                                                      | Multilayer Ceramic Capacitors MLCC - SMD/SMT               |                                                                                                            | C1525         | https://jlcpcb.com/partdetail/1877-CL05B104KO5NNNC/C1525                  | Basic    | 35  | 35 JLCPCB | 0.042           |
| C3,C8,C10,C16           |                   | 10uF                                                                    | C0402                               |               | Select by System | CL05A106MP5NUNC         | Samsung Electro-Mechanics   | 0402            | 10V 10uF X5R ±20% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS                                                                                       | Multilayer Ceramic Capacitors MLCC - SMD/SMT               |                                                                                                            | C315248       | https://jlcpcb.com/partdetail/297154-CL05A106MP5NUNC/C315248              | Extended | 32  | 32 JLCPCB | 0.2656          |
| C4                      |                   | 1uF                                                                     | C0603                               |               | Unconfirmed      | CL21B105KBFNNNE         | Samsung Electro-Mechanics   | 0805            | 1uF 50V X7R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS                                                                                        | Multilayer Ceramic Capacitors MLCC - SMD/SMT               | 1.Multiple lines in the BOM have been matched to the same part. Please check if the matching is correct. ; | C28323        | https://jlcpcb.com/partdetail/29074-CL21B105KBFNNNE/C28323                | Basic    | 30  | 30 JLCPCB | 0.273           |
| C19,C20,C30             |                   | 1uF 50V X7R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS | C0805                               |               | Unconfirmed      | CL21B105KBFNNNE         | Samsung Electro-Mechanics   | 0805            | 1uF 50V X7R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS                                                                                        | Multilayer Ceramic Capacitors MLCC - SMD/SMT               | 1.Multiple lines in the BOM have been matched to the same part. Please check if the matching is correct. ; | C28323        | https://jlcpcb.com/partdetail/29074-CL21B105KBFNNNE/C28323                | Basic    | 30  | 30 JLCPCB | 0.273           |
| C5,C29                  |                   | 1pF 50V Ceramic Capacitor C0G 0402                                      | C0402                               |               | Select by System | GJM1555C1H1R0BB01D      | Murata Electronics          | 0402            | 1pF 50V C0G 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS                                                                                             | Multilayer Ceramic Capacitors MLCC - SMD/SMT               |                                                                                                            | C76898        | https://jlcpcb.com/partdetail/MurataElectronics-GJM1555C1H1R0BB01D/C76898 | Extended | 20  | 20 JLCPCB | 0.23            |
| C6,C9                   |                   | 10pF                                                                    | C0603                               |               | Select by System | CL10C100JB8NNNC         | Samsung Electro-Mechanics   | 0603            | 10pF 50V C0G ±5% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS                                                                                        | Multilayer Ceramic Capacitors MLCC - SMD/SMT               |                                                                                                            | C1634         | https://jlcpcb.com/partdetail/1986-CL10C100JB8NNNC/C1634                  | Basic    | 20  | 20 JLCPCB | 0.09            |
| C7                      |                   | 22uF                                                                    | C1206                               |               | Select by System | CL31A226KAHNNNE         | Samsung Electro-Mechanics   | 1206            | 22uF 25V X5R ±10% 1206 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS                                                                                       | Multilayer Ceramic Capacitors MLCC - SMD/SMT               |                                                                                                            | C12891        | https://jlcpcb.com/partdetail/13537-CL31A226KAHNNNE/C12891                | Basic    | 9   | 9 JLCPCB  | 0.3663          |
| C14                     |                   | 1uF                                                                     | C0603                               |               | Select by System | CL10A105KB8NNNC         | Samsung Electro-Mechanics   | 0603            | 1uF 50V X5R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS                                                                                        | Multilayer Ceramic Capacitors MLCC - SMD/SMT               |                                                                                                            | C15849        | https://jlcpcb.com/partdetail/16531-CL10A105KB8NNNC/C15849                | Basic    | 20  | 20 JLCPCB | 0.096           |
| D1                      |                   | HPESD5V0U1BA-Q                                                          | SOD-323_L1.7-W1.3-LS2.5-BI          |               | Select by System | HPESD5V0U1BA-Q          | HXY MOSFET                  | SOD-323         | -40℃~+125℃ 1 12.9V 1uA 2.5pF 2A 30W@8/20us 5.4V 5V Bidirectional ESD IEC 61000-4-2 SOD-323 ESD and Surge Protection (TVS/ESD) ROHS                             | ESD And Surge Protection (TVS/ESD)                         |                                                                                                            | C25503782     | https://jlcpcb.com/partdetail/HXYMOSFET-HPESD5V0U1BAQ/C25503782           | Extended | 11  | 11 JLCPCB | 0.2497          |
| D4,D5                   |                   | SS14L                                                                   | SOD-123F_L2.8-W1.8-LS3.7-RD         |               | Select by System | SS14L                   | Guangdong Hottech           | SOD-123FL       | 1A 30A 40V 500uA@40V 550mV@1A SOD-123FL Schottky Diodes ROHS                                                                                                   | Schottky Diodes                                            |                                                                                                            | C190475       | https://jlcpcb.com/partdetail/GuangdongHottech-SS14L/C190475              | Extended | 20  | 20 JLCPCB | 0.272           |
| JP1                     |                   | 6GHz                                                                    | RF-SMD_FRF05002-JSS103M             |               | Select by System | U.FL-R-SMT-1(80)        | HRS(Hirose)                 | SMD             | -40℃~+90℃ 1 1.25mm 2mm 50Ω 6GHz Board Side IPEX Male Pin SMD Coaxial Connectors (RF) ROHS                                                                      | Coaxial Connectors (RF)                                    |                                                                                                            | C88374        | https://jlcpcb.com/partdetail/HRS_Hirose-U_FL_R_SMT_1_80/C88374           | Extended | 7   | 7 JLCPCB  | 0.8386          |
| L1,L2                   |                   | 2.0nH                                                                   | L0603                               |               | Select by System | LQG15HS2N0S02D          | Murata Electronics          | 0402            | 2nH 6GHz 8@100MHz 900mA 90mΩ 0402 Inductors (SMD) ROHS                                                                                                         | Inductors (SMD)                                            |                                                                                                            | C18216        | https://jlcpcb.com/partdetail/MurataElectronics-LQG15HS2N0S02D/C18216     | Extended | 22  | 22 JLCPCB | 0.1716          |
| LED1                    |                   | XL-1608SURC-06                                                          | LED0603-RD_RED                      |               | Select by System | XL-1608SURC-06          | XINGLIGHT                   | 0603            | -40℃~+85℃ 120° 2.3V 20mA 225mcd 50mW 620nm~630nm 625nm Red Top-mount Water Clear 0603 LED Indication - Discrete ROHS                                           | LED Indication - Discrete                                  |                                                                                                            | C965799       | https://jlcpcb.com/partdetail/XINGLIGHT-XL_1608SURC06/C965799             | Extended | 20  | 20 JLCPCB | 0.06            |
| LED2,LED4               |                   | XL-1608UBC-04                                                           | LED0603-RD_BLUE                     |               | Select by System | XL-1608UBC-04           | XINGLIGHT                   | 0603            | 120° 20mA 3.3V 300mcd 455nm~475nm 470nm 70mW Blue Top-mount Water Clear 0603 LED Indication - Discrete ROHS                                                    | LED Indication - Discrete                                  |                                                                                                            | C965807       | https://jlcpcb.com/partdetail/XINGLIGHT-XL_1608UBC04/C965807              | Extended | 22  | 22 JLCPCB | 0.077           |
| LED3                    |                   | XL-5050RGBC-2812B                                                       | LED-SMD_4P-L5.0-W5.0-BL_XL-5050RGBC |               | Select by System | XL-5050RGBC-2812B       | XINGLIGHT                   | SMD5050-4P      | -20℃~+85℃ 0.3mA 1.6mm 120° 2000V 3.5V~5.5V 4kHz 5mm 5mm 800Kbit/s G:1300mcd~1800mcd R:620nm~635nm Top-mount Water Clear SMD5050-4P RGB LEDs(Built-in IC) ROHS  | RGB LEDs(Built-In IC)                                      |                                                                                                            | C2843785      | https://jlcpcb.com/partdetail/XINGLIGHT-XL_5050RGBC2812B/C2843785         | Extended | 9   | 9 JLCPCB  | 0.3924          |
| Q1,Q2                   |                   | SS8050-G                                                                | SOT-23-3_L2.9-W1.5-P1.90-LS2.6-BR   |               | Select by System | SS8050-G                | Comchip                     | SOT-23          | 1 NPN 1.5A 100@10mA,1V 100MHz 100nA 25V 300mW 400mV@50mA,5mA 5V NPN SOT-23 Bipolar (BJT) ROHS                                                                  | Bipolar (BJT)                                              |                                                                                                            | C3199946      | https://jlcpcb.com/partdetail/Comchip-SS8050G/C3199946                    | Extended | 10  | 10 JLCPCB | 0.629           |
| R8                      |                   | 499                                                                     | R0603                               |               | Select by System | RC0402FR-07499RL        | YAGEO                       | 0402            | -55℃~+155℃ 499Ω 50V 62.5mW Thick Film Resistor ±1% ±100ppm/℃ 0402 Chip Resistor - Surface Mount ROHS                                                           | Chip Resistor - Surface Mount                              |                                                                                                            | C137970       | https://jlcpcb.com/partdetail/YAGEO-RC0402FR07499RL/C137970               | Extended | 20  | 20 JLCPCB | 0.014           |
| R14                     |                   | 0Ω                                                                      | R0603                               |               | Select by System | 0603WAF0000T5E          | UNI-ROYAL(Uniroyal Elec)    | 0603            | -55℃~+155℃ 0Ω 100mW 75V Thick Film Resistor ±1% 0603 Chip Resistor - Surface Mount ROHS                                                                        | Chip Resistor - Surface Mount                              |                                                                                                            | C21189        | https://jlcpcb.com/partdetail/21903-0603WAF0000T5E/C21189                 | Basic    | 20  | 20 JLCPCB | 0.022           |
| R18,R19                 |                   | 10kΩ                                                                    | R0603                               |               | Select by System | 0603WAF1002T5E          | UNI-ROYAL(Uniroyal Elec)    | 0603            | -55℃~+155℃ 100mW 10kΩ 75V Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHS                                                            | Chip Resistor - Surface Mount                              |                                                                                                            | C25804        | https://jlcpcb.com/partdetail/26547-0603WAF1002T5E/C25804                 | Basic    | 20  | 20 JLCPCB | 0.022           |
| R23,R24,R25,R26,R27,R28 |                   | 0Ω                                                                      | R0402                               |               | Select by System | RC0402FR-070RL          | YAGEO                       | 0402            | -55℃~+155℃ 0Ω 50V 62.5mW Thick Film Resistor ±1% 0402 Chip Resistor - Surface Mount ROHS                                                                       | Chip Resistor - Surface Mount                              |                                                                                                            | C106231       | https://jlcpcb.com/partdetail/YAGEO-RC0402FR070RL/C106231                 | Extended | 40  | 40 JLCPCB | 0.024           |
| R29,R30,R31,R32         |                   | 5.1kΩ                                                                   | R0603                               |               | Select by System | RC0603FR-075K1L         | YAGEO                       | 0603            | -55℃~+155℃ 100mW 5.1kΩ 75V Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHS                                                           | Chip Resistor - Surface Mount                              |                                                                                                            | C105580       | https://jlcpcb.com/partdetail/YAGEO-RC0603FR075K1L/C105580                | Extended | 30  | 30 JLCPCB | 0.039           |
| R33,R34                 |                   | 10kΩ                                                                    | R0603                               |               | Select by System | RC0603FR-0710KL         | YAGEO                       | 0603            | -55℃~+155℃ 100mW 10kΩ 75V Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHS                                                            | Chip Resistor - Surface Mount                              |                                                                                                            | C98220        | https://jlcpcb.com/partdetail/YAGEO-RC0603FR0710KL/C98220                 | Extended | 20  | 20 JLCPCB | 0.022           |
| R35                     |                   | 2.7kΩ                                                                   | R0402                               |               | Select by System | RC0402FR-072K7L         | YAGEO                       | 0402            | -55℃~+155℃ 2.7kΩ 50V 62.5mW Thick Film Resistor ±1% ±100ppm/℃ 0402 Chip Resistor - Surface Mount ROHS                                                          | Chip Resistor - Surface Mount                              |                                                                                                            | C138017       | https://jlcpcb.com/partdetail/YAGEO-RC0402FR072K7L/C138017                | Extended | 20  | 20 JLCPCB | 0.014           |
| R36,R37                 |                   | 680Ω                                                                    | R0402                               |               | Select by System | RC0402FR-07680RL        | YAGEO                       | 0402            | -55℃~+155℃ 50V 62.5mW 680Ω Thick Film Resistor ±1% ±100ppm/℃ 0402 Chip Resistor - Surface Mount ROHS                                                           | Chip Resistor - Surface Mount                              |                                                                                                            | C137948       | https://jlcpcb.com/partdetail/YAGEO-RC0402FR07680RL/C137948               | Extended | 20  | 20 JLCPCB | 0.014           |
| SW1,SW2                 |                   | TS-1088-AR02016                                                         | SW-SMD_L3.9-W3.0-P4.45              |               | Select by System | TS-1088-AR02016         | XUNPU                       | SMD,4x3mm       | -30℃~+80℃ 1.6N 100,000 Cycles 12V 2mm 3mm 4mm 50mA Black Round Button SMD(SMT) Tab SPST Surface Mount,Vertical Without Bracket SMD,4x3mm Tactile Switches ROHS | Tactile Switches                                           |                                                                                                            | C720477       | https://jlcpcb.com/partdetail/XUNPU-TS_1088AR02016/C720477                | Basic    | 14  | 14 JLCPCB | 0.6076          |
| U1                      |                   | ESP32-S3R8                                                              | QFN-56_L7.0-W7.0-P0.40-TL-EP4.0     |               | Select by System | ESP32-S3R8              | Espressif Systems           | QFN-56(7x7)     | -40℃~+65℃ -74.2dBm 150Mbps 18.5dBm 2.412GHz~2.484GHz 2.4GHz 283mA 3V~3.6V 88mA Bluetooth SPI transceiver QFN-56(7x7) RF Transceiver ICs ROHS                   | RF Transceiver ICs                                         |                                                                                                            | C2913194      | https://jlcpcb.com/partdetail/EspressifSystems-ESP32S3R8/C2913194         | Extended | 5   | 5 JLCPCB  | 16.118          |
| U4                      |                   | GD25Q128ESIGR                                                           | SOP-8_L5.3-W5.3-P1.27-LS8.0-BL      |               | Select by System | GD25Q128ESIGR           | GigaDevice Semicon Beijing  | SOP-8-208mil    | 100,000 Cycles 128Mbit 133MHz 14uA 150ms@(32KB) 2.7V~3.6V 20 Years 500us SPI SOP-8-208mil NOR FLASH ROHS                                                       | NOR FLASH                                                  |                                                                                                            | C2928891      | https://jlcpcb.com/partdetail/3260959-GD25Q128ESIGR/C2928891              | Extended | 5   | 5 JLCPCB  | 6.216           |
| U5,U6                   |                   | TYPEC-ZL-102PWB                                                         | TYPE-C-SMD_HDGC_TYPE-C-ZL-103PWB    |               | Select by System | TYPE C-ZL-102PWB        | HDGC                        | SMD             | 1 10,000 cycles 16P 7.35mm Female Surface Mount, Right Angle Type-C maize-yellow SMD USB Connectors ROHS                                                       | USB Connectors                                             |                                                                                                            | C5273950      | https://jlcpcb.com/partdetail/HDGC-TYPE_C_ZL102PWB/C5273950               | Extended | 10  | 10 JLCPCB | 0.991           |
| U7                      |                   | CH343P                                                                  | TQFN-16_L3.0-W3.0-P0.50-BL-EP1.7    |               | Select by System | CH343P                  | WCH(Jiangsu Qin Heng)       | TQFN-16-EP(3x3) | -40℃~+85℃ 3.3V 3mA 6Mbps 90uA USB 2.0 USB to UART TQFN-16-EP(3x3) USB Converters ROHS                                                                          | USB Converters                                             |                                                                                                            | C2846043      | https://jlcpcb.com/partdetail/WCH_Jiangsu_Qin_Heng-CH343P/C2846043        | Extended | 5   | 5 JLCPCB  | 5.664           |
| U8                      |                   | AMS1117-5.0                                                             | SOT-223_L6.5-W3.5-P2.30-LS7.0-BR    |               | Select by System | AMS1117-5.0             | Advanced Monolithic Systems | SOT-223         | -40℃~+125℃ 1 1.3V 15V 1A 5V 60dB Fixed Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS                                        | Voltage Regulators - Linear, Low Drop Out (LDO) Regulators |                                                                                                            | C6187         | https://jlcpcb.com/partdetail/Advanced_MonolithicSystems-AMS1117_50/C6187 | Basic    | 7   | 7 JLCPCB  | 1.3209          |
| X1                      |                   | 40MHz                                                                   | CRYSTAL-SMD_4P-L3.2-W2.5-BL         |               | Select by System | XXDBBCNANF-40.000000MHZ | TAITIEN Elec                | SMD3225-4P      | -20℃~+70℃ 12pF 40MHz Crystal Oscillator ±10ppm ±10ppm SMD3225-4P Crystals ROHS                                                                                 | Crystals                                                   |                                                                                                            | C521661       | https://jlcpcb.com/partdetail/TAITIENElec-XXDBBCNANF_40000000MHZ/C521661  | Extended | 5   | 5 JLCPCB  | 0.847           |

