Blynk
About the Blynk PCB
Blynk is an open source ESP32 PCB design by DynamicWhiteHat, published on GitHub. It is a 2-layer board measuring 80.5 × 53.9 mm, with 100 components from 45 distinct parts.
Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the ES7243, TPS563201, LM5050-1, USBLC6-2P6 and ATTINY1616-S. By type, the board carries 27 capacitors, 27 resistors, 14 switches, 9 connectors, 7 transistors and 6 ICs.
From the project
A feature-rich LED controller
Main components on the Blynk
Blynk bill of materials (BOM)
100 components, 45 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-S3-WROOM-1 | ESP32-S3-WROOM-1 | U1 |
| 1 | ES7243 | QFN-20-1EP_3x3mm_P0.4mm_EP1.65x1.65mm | U2 |
| 1 | TPS563201 | SOT-23-6 | U4 |
| 1 | LM5050-1 | TSOT-23-6 | U5 |
| 1 | USBLC6-2P6 | SOT-666 | U6 |
| 1 | ATTINY1616-S ATtiny1616-S | SOIC-20W_7.5x12.8mm_P1.27mm | U8 |
| 6 | AO3400A | SOT-23 | Q1, Q3, Q4, Q5, Q6, Q7 |
| 1 | AOD4184A | TO-252-2 | Q2 |
| 1 | USB_C_RECEPTACLE_USB2.0_16P USB_C_Receptacle_USB2.0_16P | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | PIR | PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | AUDIOPLUG3 AudioPlug3 | Jack_3.5mm_CUI_SJ1-3523N_Horizontal | J3 |
| 1 | BH1750 | XDCR_BH1750FVI-TR | J4 |
| 1 | TSOP38238 | PinHeader_1x03_P2.54mm_Vertical | J5 |
| 1 | SCREW_TERMINAL_01X02 Screw_Terminal_01x02 | Altech_AK100_1x02_P5.00mm | J7 |
| 1 | CONN_02X03_COUNTER_CLOCKWISE Conn_02x03_Counter_Clockwise | PinHeader_1x06_P2.54mm_Vertical | J8 |
| 1 | CR2032 | BatteryHolder_MYOUNG_BS-07-A1BJ001_CR2032 | J9 |
| 1 | CONN_01X03 Conn_01x03 | PinHeader_1x03_P1.27mm_Vertical | J10 |
| 1 | C914092 750 mA | Fuse_0603_1608Metric | F1 |
| 1 | C48392676 8A | Fuse_2920_7451Metric | F2 |
| 1 | ICS-43434 | InvenSense_ICS-43434-6_3.5x2.65mm | MK1 |
Show 25 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 12 | SW_PUSH_45DEG SW_Push_45deg | SW_TS-1088-AR02016 | SW2, SW5, SW6, SW7, SW8, SW9, SW10, SW11 +4 |
| 2 | SW_Push | SW_TS-1088-AR02016 | SW3, SW4 |
| 1 | C151996 D | D_SOD-323 | D1 |
| 1 | SMBJ15A hongjiacheng | D_SMB | D2 |
| 1 | TSAL4400 | LED_D3.0mm_IRBlack | D3 |
| 1 | SS34 | D_SMA | D4 |
| 1 | 2.2UH 2.2uH | L_0603_1608Metric | L1 |
| 2 | BLM15PX121SN1D | L_0402_1005Metric | L3, L4 |
| 10 | 1UF 1uF | C_0603_1608Metric | C1, C8, C9, C10, C11, C12, C14, C15 +2 |
| 6 | 0.1UF 0.1uF | C_0603_1608Metric | C2, C4, C5, C29, C30, C31 |
| 1 | 10UF 10uF | C_0603_1608Metric | C3 |
| 4 | 100NF 100nF | C_0603_1608Metric | C6, C13, C16, C19 |
| 1 | 4.7UF 4.7uF | C_0603_1608Metric | C23 |
| 5 | 22UF 22uF | C_0603_1608Metric | C24, C25, C26, C27, C28 |
| 1 | 100K | R_0603_1608Metric | R1 |
| 2 | 5.1K 5.1k | R_0603_1608Metric | R2, R3 |
| 1 | 20K | R_0603_1608Metric | R4 |
| 8 | 10K | R_0603_1608Metric | R5, R6, R12, R15, R18, R20, R22, R24 |
| 3 | 4.7K | R_0603_1608Metric | R7, R8, R27 |
| 1 | 1K | R_0603_1608Metric | R9 |
| 3 | 100R | R_0603_1608Metric | R10, R11, R14 |
| 1 | 33.2K | R_0603_1608Metric | R13 |
| 5 | 220R | R_0603_1608Metric | R16, R17, R19, R21, R23 |
| 1 | 47R | R_0603_1608Metric | R25 |
| 1 | 150R | R_0603_1608Metric | R26 |
Blynk design files
The KiCad project lives in the DynamicWhiteHat/Blynk repository on GitHub; these links point at the commit this page was built from.
Blynk: common questions
What microcontroller does the Blynk use?
The Blynk is built around the ESP32-S3-WROOM-1, from the ESP32 family.
How big is the Blynk PCB?
The Blynk measures 80.5 × 53.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Blynk?
100 components, from 45 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 Blynk design files?
From the DynamicWhiteHat/Blynk 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 Blynk design in my own project?
The repository has no license, so all rights stay with DynamicWhiteHat. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Blynk 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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