HB-RF-ETH
alexreinert·PCB·HB-RF-ETH/HB-RF-ETH.kicad_pcb
About the HB-RF-ETH PCB
HB-RF-ETH is an open source ESP32 PCB design by alexreinert, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 85 × 56 mm, with 86 components from 53 distinct parts.
Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the CP2102N, SRV05-4, CH340C and RT9400. By type, the board carries 35 resistors, 26 capacitors, 6 ICs, 6 transistors, 5 connectors and 4 diodes.
It belongs with the usb & debug tools and rf & radio designs in this gallery.
From the project
Some of my PCBs
Dieses Werk ist lizenziert unter einer Creative Commons Namensnennung - Nicht-kommerziell - Weitergabe unter gleichen Bedingungen 4.0 International Lizenz.
Bei Nutzung der Platinen freue ich mich über Feedback und kleine Aufmerksamkeiten aus meiner Amazon Wunschliste.
Viele Platinen gibt es auch im offiziellen Shop viopcb.

Main components on the HB-RF-ETH
HB-RF-ETH bill of materials (BOM)
86 components, 53 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CP2102N AMS1117-3.3 | SOT-223-3_TabPin2 | U1 |
| 1 | SRV05-4 LAN8720A | QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm_ThermalVias | U2 |
| 1 | ESP32-WROOM-32 | ESP32-WROOM-32_Handsoldering | U3 |
| 1 | CH340C | SOIC-16_3.9x9.9mm_P1.27mm | U4 |
| 1 | RT9400 | RT9400 | U5 |
| 1 | SRV05-4 | SOT-23-6 | U6 |
| 2 | AO3401A S8050 | SOT-23 | Q1, Q2 |
| 1 | AO3400A AO3401A | SOT-23 | Q3 |
| 1 | S8050 | SOT-23 | Q4 |
| 1 | S8050 | SOT-23 | Q5 |
| 1 | AO3401A | SOT-23 | Q6 |
| 1 | dnp | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | CON_GPIO | PinHeader_2x20_P2.54mm_Vertical | J1 |
| 1 | CONN_02X20_ODD_EVEN HY931147C | RJ45_Hanrun_HY934711C | J2 |
| 1 | USB_B_Micro | U-F-M5DD-Y-1 | J3 |
| 1 | CON_I2C | PinHeader_1x05_P2.54mm_Vertical | J4 |
| 1 | CON_DCF | PinHeader_1x03_P2.54mm_Vertical | J5 |
| 1 | BTN | SW_PUSH_6mm | SW1 |
| 1 | LED_Status | LED_0603_1608Metric_Castellated | D1 |
| 1 | LED_Power | LED_0603_1608Metric_Castellated | D2 |
Show 33 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SS34 | D_SMA | D3 |
| 1 | 1.5KE68CA | D_DO-201AE_P5.08mm_Vertical_KathodeUp | D4 |
| 1 | C1015 FB/600R | L_0805_2012Metric | L1 |
| 1 | FB/100R | L_0805_2012Metric | L2 |
| 1 | 10NF 470u | CP_Radial_D8.0mm_P3.50mm | C1 |
| 1 | 10NF 100n | C_0402_1005Metric | C2 |
| 1 | 100NF 10u | C_0603_1608Metric | C3 |
| 1 | 4.7UF 470p | C_0402_1005Metric | C4 |
| 1 | 100NF 1u | C_0603_1608Metric | C5 |
| 1 | 4.7UF 22u | C_0603_1608Metric | C6 |
| 2 | 100NF 100n | C_0402_1005Metric | C7, C10 |
| 1 | 100NF 470u | CP_Radial_D8.0mm_P3.50mm | C8 |
| 1 | 100NF 22u | C_0603_1608Metric | C9 |
| 1 | 22n | C_0402_1005Metric | C11 |
| 4 | 22u | C_0603_1608Metric | C12, C13, C22, C24 |
| 5 | 100n | C_0402_1005Metric | C14, C16, C19, C20, C26 |
| 2 | 10n | C_0402_1005Metric | C15, C21 |
| 2 | dnp | C_0402_1005Metric | C17, C18 |
| 1 | 10u | C_0603_1608Metric | C25 |
| 1 | 100u | CP_EIA-3528-15_AVX-H | C27 |
| 13 | 10K | R_0402_1005Metric | R1, R2, R7, R19, R20, R21, R25, R26 +5 |
| 1 | 10K 1K | R_0402_1005Metric | R3 |
| 1 | 10K 100R | R_0402_1005Metric | R4 |
| 2 | 10K | R_0402_1005Metric | R5, R8 |
| 4 | 2K | R_0402_1005Metric | R6, R31, R33, R34 |
| 2 | 100R | R_0402_1005Metric | R9, R10 |
| 1 | 33R | R_0402_1005Metric | R11 |
| 1 | 12.1K | R_0402_1005Metric | R12 |
| 4 | 49.9R | R_0402_1005Metric | R13, R14, R15, R16 |
| 3 | 1K | R_0402_1005Metric | R17, R23, R24 |
| 1 | 330R | R_0402_1005Metric | R18 |
| 1 | 1M | R_0402_1005Metric | R22 |
| 1 | 100K | R_0402_1005Metric | R28 |
HB-RF-ETH design files
The KiCad project lives in the alexreinert/PCB repository on GitHub; these links point at the commit this page was built from.
HB-RF-ETH: common questions
What microcontroller does the HB-RF-ETH use?
The HB-RF-ETH is built around the ESP32-WROOM-32, from the ESP32 family.
How big is the HB-RF-ETH PCB?
The HB-RF-ETH measures 85 × 56 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the HB-RF-ETH?
86 components, from 53 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 HB-RF-ETH design files?
From the alexreinert/PCB repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the HB-RF-ETH design in my own project?
It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.
Can I test firmware for the HB-RF-ETH 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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