Pot pulse
About the Pot pulse PCB
Pot pulse is an open source ESP32 PCB design by rwrife, published on GitHub under the MIT license. It is a 4-layer board measuring 70 × 50 mm, with 41 components from 22 distinct parts.
Its main chip is the ESP32-C3-MINI-1-H4X, from the ESP32 family. Other key parts include the TPS62162DSGR, TPD4E05U06DQAR, ADS1115IDGSR, SHT40-AD1B-R2 and VEML7700-TR. By type, the board carries 13 capacitors, 12 resistors, 7 ICs, 6 connectors, 1 fuse and 1 diode.
It belongs with the iot & wireless and sensors designs in this gallery.
From the project
USB-powered ESP32-C3 plant-shelf monitor for home growers to track soil moisture, light, and microclimate trends in a local dashboard without cloud accounts or automatic watering.
This directory contains the editable KiCad 9 project for the USB-powered Pot Pulse four-zone sensor node: first-pass schematic (issue #3) and first-pass PCB (issue #5).
- pot-pulse.kicadpro — KiCad project settings. - pot-pulse.kicadsch — editable schematic source of truth. - pot-pulse.kicadpcb — editable first-pass PCB (generated by buildpcb.py, routed via FreeRouter, DRC-adjudicated). - lib/pot-pulse.kicadsym — project symbols whose pin maps were transcribed from the manufacturer documents cited in ../component-selection.md. - lib/pot-pulse.pretty/ — project land patterns (ESP32-C3-MINI-1…
Main components on the Pot pulse
Pot pulse bill of materials (BOM)
41 components, 22 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS62162DSGR WSON-8-1EP_2x2mm_P0.5mm_EP0.9x1.6mm_ThermalVias Texas Instruments | WSON-8-1EP_2x2mm_P0.5mm_EP0.9x1.6mm_ThermalVias | U1 |
| 1 | ESP32-C3-MINI-1-H4X ESP32-C3-MINI-1 Espressif Systems | ESP32-C3-MINI-1 | U2 |
| 1 | TPD4E05U06DQAR USON-10_2.5x1.0mm_P0.5mm Texas Instruments | USON-10_2.5x1.0mm_P0.5mm | U3 |
| 1 | ADS1115IDGSR VSSOP-10_3x3mm_P0.5mm Texas Instruments | VSSOP-10_3x3mm_P0.5mm | U4 |
| 1 | SHT40-AD1B-R2 Sensirion_DFN-4_1.5x1.5mm_P0.8mm_SHT4x_NoCentralPad Sensirion | Sensirion_DFN-4_1.5x1.5mm_P0.8mm_SHT4x_NoCentralPad | U5 |
| 1 | VEML7700-TR VEML7700 Vishay | VEML7700 | U6 |
| 1 | USBLC6-2SC6 SOT-23-6 STMicroelectronics | SOT-23-6 | U7 |
| 1 | USB4105-GF-A USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal Global Connector Technology | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 4 | S3B-PH-K-S(LF)(SN) JST_PH_S3B-PH-K_1x03_P2.00mm_Horizontal JST | JST_PH_S3B-PH-K_1x03_P2.00mm_Horizontal | J2, J3, J4, J5 |
| 1 | PinHeader_1x06_P2.54mm_Vertical | PinHeader_1x06_P2.54mm_Vertical | J6 |
| 1 | MF-MSMF050-2 Fuse_1812_4532Metric Bourns | Fuse_1812_4532Metric | F1 |
| 1 | ESD5Z5.0T1G D_SOD-523 onsemi | D_SOD-523 | D1 |
| 1 | VLS252012T-2R2M1R3 L_1008_2520Metric TDK | L_1008_2520Metric | L1 |
| 2 | GRM31CR61A106KA01L C_1206_3216Metric Murata | C_1206_3216Metric | C1, C4 |
| 9 | GRM188R71H104KA93D C_0603_1608Metric Murata | C_0603_1608Metric | C2, C5, C7, C8, C9, C10, C11, C12 +1 |
| 1 | GRM31CR61C226ME15L C_1206_3216Metric Murata | C_1206_3216Metric | C3 |
| 1 | GRM188R71C105KA12D C_0603_1608Metric Murata | C_0603_1608Metric | C6 |
| 2 | RC0603FR-075K1L R_0603_1608Metric Yageo | R_0603_1608Metric | R1, R2 |
| 1 | RC0603FR-07100KL R_0603_1608Metric Yageo | R_0603_1608Metric | R3 |
| 2 | RC0603FR-074K7L R_0603_1608Metric Yageo | R_0603_1608Metric | R4, R5 |
Show 2 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | RC0603FR-0710KL R_0603_1608Metric Yageo | R_0603_1608Metric | R6, R7, R8 |
| 4 | RC0603FR-071KL R_0603_1608Metric Yageo | R_0603_1608Metric | R9, R10, R11, R12 |
Pot pulse design files
The KiCad project lives in the rwrife/pot-pulse repository on GitHub; these links point at the commit this page was built from.
Pot pulse: common questions
What microcontroller does the Pot pulse use?
The Pot pulse is built around the ESP32-C3-MINI-1-H4X, from the ESP32 family.
How big is the Pot pulse PCB?
The Pot pulse measures 70 × 50 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Pot pulse?
41 components, from 22 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 Pot pulse design files?
From the rwrife/pot-pulse 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 Pot pulse design in my own project?
Yes, under the terms of its MIT license, which rwrife chose for the repository.
Can I test firmware for the Pot pulse 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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