EWS RevH
About the EWS RevH PCB
EWS RevH is an open source ESP32 PCB design by jhbryan0817-del, published on GitHub. It is a 6-layer board measuring 91 × 124 mm, with 95 components from 95 distinct parts.
Its main chip is the ESP32-DevKitC V4 WROOM, from the ESP32 family. Other key parts include the AMC3330DWER, ADS1115IDGSR, Pololu_D24V10F5 and Pololu_D24V50F5. By type, the board carries 40 resistors, 25 capacitors, 14 connectors, 7 ICs, 6 diodes and 1 transistor.
It belongs with the sensors and test & measurement designs in this gallery.
From the project
Engineering prototype, 3 October 2026. Native KiCad 10 sources for the two-electrode flood-hazard research USV. Open EWSRevH.kicadpro. This revision changes electronics only. A subsequent 4 October live Fusion Rev I iteration updates the mechanical fit representation; see CAD aud
Engineering prototype, 3 October 2026. Native KiCad 10 sources for the two-electrode flood-hazard research USV. Open EWSRevH.kicadpro. This revision changes electronics only. A subsequent 4 October live Fusion Rev I iteration updates the mechanical fit representation; see CAD audit. No new STEP, F3D or STL was generated.
- U4 at I2C address 0x48 acquires the high range. New U7 at 0x49 acquires the sensitive range. Both use AIN0–AIN1; each can run continuously at 860 samples/s nominal without alternating ranges. Their clocks are independent, so this is concurrent acquisition, not…
Main components on the EWS RevH
EWS RevH bill of materials (BOM)
95 components, 95 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-DevKitC V4 WROOM | U1 | U1 |
| 1 | AMC3330DWER | U2 | U2 |
| 1 | AMC3330DWER | U3 | U3 |
| 1 | ADS1115IDGSR | U4 | U4 |
| 1 | Pololu_D24V10F5 | U5 | U5 |
| 1 | Pololu_D24V50F5 | U6 | U6 |
| 1 | ADS1115IDGSR | U7 | U7 |
| 1 | DMPH3010LK3-13 | Q1 | Q1 |
| 1 | EXPANSION_3V3_ONLY | J1 | J1 |
| 1 | I2C_3V3 | J2 | J2 |
| 1 | UART_RESET | J3 | J3 |
| 1 | ADC_DIAGNOSTICS | J4 | J4 |
| 1 | PROBE_E2_G_5V_S | J5 | J5 |
| 1 | PROBE_E4_G_5V_S | J6 | J6 |
| 1 | STEER_G_5V_S | J7 | J7 |
| 1 | ESC_G_NC_S | J8 | J8 |
| 1 | REG_CTRL_VIN_REFERENCED | J9 | J9 |
| 1 | POWER_AUX | J10 | J10 |
| 1 | 2S_INPUT_EXTERNAL_FUSE | J11 | J11 |
| 1 | ELECTRODE_E2 | J12 | J12 |
Show 75 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ELECTRODE_E4 | J13 | J13 |
| 1 | DRY_LEAK_SENSOR | J14 | J14 |
| 1 | 3A fast fuse | F1 | F1 |
| 1 | REMOVE_FOR_USB | JP1 | JP1 |
| 1 | BAV199 | D1 | D1 |
| 1 | BAV199 | D2 | D2 |
| 1 | BAV199 | D3 | D3 |
| 1 | BAV199 | D4 | D4 |
| 1 | SMBJ12A | D5 | D5 |
| 1 | BZT52H-C10 | D6 | D6 |
| 1 | 1uF | C1 | C1 |
| 1 | 1nF | C2 | C2 |
| 1 | 100nF | C3 | C3 |
| 1 | 1nF | C4 | C4 |
| 1 | 100nF | C5 | C5 |
| 1 | 1nF | C6 | C6 |
| 1 | 1uF | C7 | C7 |
| 1 | 100pF C0G | C8 | C8 |
| 1 | 1uF | C11 | C11 |
| 1 | 1nF | C12 | C12 |
| 1 | 100nF | C13 | C13 |
| 1 | 1nF | C14 | C14 |
| 1 | 100nF | C15 | C15 |
| 1 | 1nF | C16 | C16 |
| 1 | 1uF | C17 | C17 |
| 1 | 100pF C0G | C18 | C18 |
| 1 | 100nF | C30 | C30 |
| 1 | 330nF | C31 | C31 |
| 1 | 330nF | C32 | C32 |
| 1 | 100nF 25V X7R | C33 | C33 |
| 1 | 10uF 25V X5R | C40 | C40 |
| 1 | 10uF 25V X5R | C41 | C41 |
| 1 | 10uF 25V X5R | C42 | C42 |
| 1 | 100nF 25V X7R | C43 | C43 |
| 1 | 100nF 25V X7R | C44 | C44 |
| 1 | 1k 0.1% | R1 | R1 |
| 1 | 1k 0.1% | R2 | R2 |
| 1 | 47k | R3 | R3 |
| 1 | 100k 0.1% | R11 | R11 |
| 1 | 100k 0.1% | R12 | R12 |
| 1 | 47k | R13 | R13 |
| 1 | 1k | R30 | R30 |
| 1 | 1k | R31 | R31 |
| 1 | 1k | R32 | R32 |
| 1 | 1k | R33 | R33 |
| 1 | 4.7k | R40 | R40 |
| 1 | 4.7k | R41 | R41 |
| 1 | 10k | R42 | R42 |
| 1 | 10k 1% | R43 | R43 |
| 1 | 100k | R50 | R50 |
| 1 | 100k | R51 | R51 |
| 1 | 100k | R52 | R52 |
| 1 | 100k | R53 | R53 |
| 1 | 100k 1% | R60 | R60 |
| 1 | 200k 0.1% | R61 | R61 |
| 1 | 33k 0.1% | R62 | R62 |
| 1 | 10k 1% | R63 | R63 |
| 1 | 1k 1% | R64 | R64 |
| 1 | 10k 1% | R65 | R65 |
| 1 | 249k 0.1% 200V | R100 | R100 |
| 1 | 249k 0.1% 200V | R101 | R101 |
| 1 | 249k 0.1% 200V | R102 | R102 |
| 1 | 249k 0.1% 200V | R103 | R103 |
| 1 | 249k 0.1% 200V | R104 | R104 |
| 1 | 249k 0.1% 200V | R105 | R105 |
| 1 | 249k 0.1% 200V | R106 | R106 |
| 1 | 249k 0.1% 200V | R107 | R107 |
| 1 | 249k 0.1% 200V | R110 | R110 |
| 1 | 249k 0.1% 200V | R111 | R111 |
| 1 | 249k 0.1% 200V | R112 | R112 |
| 1 | 249k 0.1% 200V | R113 | R113 |
| 1 | 249k 0.1% 200V | R114 | R114 |
| 1 | 249k 0.1% 200V | R115 | R115 |
| 1 | 249k 0.1% 200V | R116 | R116 |
| 1 | 249k 0.1% 200V | R117 | R117 |
EWS RevH design files
The KiCad project lives in the jhbryan0817-del/Energized_Water_Scan repository on GitHub; these links point at the commit this page was built from.
EWS RevH: common questions
What microcontroller does the EWS RevH use?
The EWS RevH is built around the ESP32-DevKitC V4 WROOM, from the ESP32 family.
How big is the EWS RevH PCB?
The EWS RevH measures 91 × 124 mm, has 6 copper layers and is 2 mm thick.
How many components are on the EWS RevH?
95 components, from 95 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 EWS RevH design files?
From the jhbryan0817-del/Energized_Water_Scan 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 EWS RevH design in my own project?
The repository has no license, so all rights stay with jhbryan0817-del. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the EWS RevH 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.
More boards in Energized_Water_Scan
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