Prototype Rev-
About the Prototype Rev- PCB
Prototype Rev- is an open source ESP32 PCB design by DiegoBriceno03, published on GitHub. It is a 2-layer board measuring 59.9 × 66.3 mm, with 104 components from 43 distinct parts.
Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the MAX30101EFD+, CP2102N-A01-GQFN28, MAX5419LETA+, LM324 and TPS61232DRCR. By type, the board carries 44 resistors, 33 capacitors, 9 ICs, 7 diodes, 4 transistors and 3 connectors.
It belongs with the power & battery, iot & wireless and sensors designs in this gallery.
From the project
Portable Biofeedback device for anxiety management
A repository that stores hardware and software files developed for the Portable Biofeedback Device, as worked on and built by students in the Electrical & Computer Engineering (ECE) Department of the College of Engineering & Computer Science (CECS) at the University of Central Florida (UCF) in Orlando, Florida.
The accompanying Android app was developed in Android Studio 3.5.3, making use of Android SDK/API 21 (Android 5).
Main components on the Prototype Rev-
Prototype Rev- bill of materials (BOM)
104 components, 43 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MAX30101EFD+ | MAX30101EFD+ | U1 |
| 1 | CP2102N-A01-GQFN28 | QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U2 |
| 1 | MAX5419LETA+ | DFN-8-1EP_3x3mm_P0.5mm_EP1.66x2.38mm | U3 |
| 1 | LM324 | TSSOP-14_4.4x5mm_P0.65mm | U4 |
| 1 | ESP32-WROOM-32 | ESP32-WROOM-32 | U5 |
| 1 | TPS61232DRCR | TPS61232DRCR | U6 |
| 1 | BQ24072TRGTR | BQ24072TRGTR | U7 |
| 1 | TLV75718PDBVR | SOT-23-5 | U8 |
| 1 | TLV75733PDBVR | SOT-23-5 | U9 |
| 2 | SS8050-G | SOT-23 | Q1, Q2 |
| 1 | 2N7002ET7G | SOT-23 | Q3 |
| 1 | BSS83P | SOT-23 | Q4 |
| 1 | USB_B_Micro | USB_Micro-B_Molex-105017-0001 | J1 |
| 1 | Interface Hub | 1053141110 | J2 |
| 1 | Conn_01x02 | JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J3 |
| 1 | Charger / Battery Bypass | PinHeader_1x03_P2.54mm_Vertical | JP2 |
| 1 | EN | SW_SPST_PTS810 | SW1 |
| 1 | BOOT | SW_SPST_PTS810 | SW2 |
| 3 | DESD5V0S1BB-7 | D_SOD-523 | D1, D2, D3 |
| 3 | Red | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D4, D5, D6 |
Show 23 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Green | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D7 |
| 1 | 1uH | IHLP2020BZER1R0M01 | L1 |
| 7 | 0.1uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C1, C2, C7, C10, C11, C12, C13 |
| 11 | 1uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C3, C5, C20, C24, C25, C26, C27, C30 +3 |
| 8 | 10uF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C4, C6, C16, C17, C18, C21, C22, C23 |
| 4 | 4.7uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C8, C9, C28, C29 |
| 1 | 22uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C14 |
| 1 | 100nF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C15 |
| 1 | 22nF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C19 |
| 11 | 10k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1, R2, R7, R16, R24, R25, R26, R27 +3 |
| 1 | 22.1k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R3 |
| 1 | 47.5k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R4 |
| 3 | 1.5k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R5, R22, R23 |
| 2 | 2K | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R6, R29 |
| 2 | 0R | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R8, R9 |
| 3 | 530R | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R10, R11, R35 |
| 2 | 4.7k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R12, R13 |
| 5 | 200k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R14, R15, R19, R20, R37 |
| 10 | 100k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R17, R18, R30, R31, R33, R34, R39, R40 +2 |
| 1 | 1M | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R21 |
| 1 | 1.78k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R32 |
| 1 | 320R | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R36 |
| 1 | 49.9k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R38 |
Prototype Rev- design files
The KiCad project lives in the DiegoBriceno03/Portable-Biofeedback repository on GitHub; these links point at the commit this page was built from.
Prototype Rev-: common questions
What microcontroller does the Prototype Rev- use?
The Prototype Rev- is built around the ESP32-WROOM-32, from the ESP32 family.
How big is the Prototype Rev- PCB?
The Prototype Rev- measures 59.9 × 66.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Prototype Rev-?
104 components, from 43 distinct parts. The full bill of materials is listed on this page.
Where can I download the Prototype Rev- design files?
From the DiegoBriceno03/Portable-Biofeedback repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Prototype Rev- design in my own project?
The repository has no license, so all rights stay with DiegoBriceno03. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Prototype Rev- 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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