WaterflowSensor
About the WaterflowSensor PCB
WaterflowSensor is an open source ESP32 PCB design by ragilalfarizi, published on GitHub. It is a 2-layer board measuring 81.9 × 61.5 mm, with 35 components from 22 distinct parts.
Its main chip is the ESP32-C3FN4, from the ESP32 family. Other key parts include the AMS1117-3.3. By type, the board carries 15 capacitors, 6 resistors, 5 connectors, 3 diodes, 2 ICs and 2 inductors.
From the project
Personal PCB design of The Watermatters
Main components on the WaterflowSensor
WaterflowSensor bill of materials (BOM)
35 components, 22 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-C3FN4 | QFN50P500X500X90-33N-D | IC1 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U1 |
| 1 | 40MHz | Crystal_SMD_SeikoEpson_FA238-4Pin_3.2x2.5mm | Y1 |
| 1 | SMA_CONN | SMA_Molex_73251-1153_EdgeMount_Horizontal | J1 |
| 1 | BATTERY | JST_EH_S2B-EH_1x02_P2.50mm_Horizontal | J2 |
| 1 | SENSOR | JST_EH_S3B-EH_1x03_P2.50mm_Horizontal | J3 |
| 1 | UART | PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | JTAG | PinHeader_1x06_P2.54mm_Vertical | J5 |
| 1 | SW_SPST | SW_SPST_B3U-1000P | SW1 |
| 1 | GREEN | LED_0603_1608Metric | D1 |
| 1 | YELLOW | LED_0603_1608Metric | D2 |
| 1 | BLUE | LED_0603_1608Metric | D3 |
| 2 | 2n2 | L_0402_1005Metric | L1, L2 |
| 6 | 100n | C_0402_1005Metric | C1, C2, C5, C6, C8, C11 |
| 1 | 1u | C_0402_1005Metric | C3 |
| 4 | 10u | C_0402_1005Metric | C4, C7, C12, C13 |
| 2 | 15p | C_0402_1005Metric | C9, C10 |
| 2 | 3p3 | C_0402_1005Metric | C14, C15 |
| 1 | 22R | R_0402_1005Metric | R1 |
| 1 | 5k1 | R_0402_1005Metric | R2 |
Show 2 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 1k | R_0402_1005Metric | R3, R4, R6 |
| 1 | 499 | R_0402_1005Metric | R9 |
WaterflowSensor design files
The KiCad project lives in the ragilalfarizi/WaterflowSensor-PCB repository on GitHub; these links point at the commit this page was built from.
- LayoutESP32-Capstone.kicad_pcb
- SchematicESP32-Capstone.kicad_sch
WaterflowSensor: common questions
What microcontroller does the WaterflowSensor use?
The WaterflowSensor is built around the ESP32-C3FN4, from the ESP32 family.
How big is the WaterflowSensor PCB?
The WaterflowSensor measures 81.9 × 61.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the WaterflowSensor?
35 components, from 22 distinct parts. The full bill of materials is listed on this page.
Where can I download the WaterflowSensor design files?
From the ragilalfarizi/WaterflowSensor-PCB repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the WaterflowSensor design in my own project?
The repository has no license, so all rights stay with ragilalfarizi. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the WaterflowSensor 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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