Avalon communication board
About the Avalon communication board
Avalon communication board is an open source ESP8266 PCB design by AvalonROV, published on GitHub. It is a 2-layer board measuring 100 × 62.1 mm, with 115 components from 53 distinct parts.
Its main chip is the ESP-12S, from the ESP8266 family. Other key parts include the ENC28J60-I/SO, B78476A8247A003, MPU9250, LM2575S and LM2776. By type, the board carries 37 resistors, 32 capacitors, 20 connectors, 10 ICs, 5 transistors and 4 diodes.
From the project
This is the Avalon Electrical Team GitHub Repository. This Repository contains all of the software and hardware development files for the Avalon ROV (Remote Operated Vehicle). For more information please visit our website: https://www.facebook.com/AvalonROV/
Main components on the Avalon communication board
Avalon communication board bill of materials (BOM)
115 components, 53 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ENC28J60-I/SO | SOIC-28 | IC1 |
| 1 | B78476A8247A003 | B78476A8247A003 | U1 |
| 1 | MPU9250 | MPU9250 | U2 |
| 1 | LM2575S | TO-263-5_TabPin3 | U3 |
| 1 | ESP-12S | ESP12 | U4 |
| 1 | LM2776 | SOT-23-6_Handsoldering | U5 |
| 2 | BH76330FVM | MSOP-8_3x3mm_Pitch0.65mm | U6, U7 |
| 2 | LMH6643 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U8, U9 |
| 2 | FMMT597 | SOT-23 | Q1, Q4 |
| 3 | BC817 | SOT-23 | Q2, Q3, Q5 |
| 1 | ABM3-25MHz | Crystal_SMD_5032-2pin_5.0x3.2mm_HandSoldering | Y1 |
| 1 | RJ45_LEDS | RJHSE-5381 | J1 |
| 1 | MC34629 | Socket_Strip_Straight_1x02_Pitch2.54mm | P1 |
| 4 | MC34633 | Socket_Strip_Straight_1x04_Pitch2.54mm | P2, P3, P4, P5 |
| 1 | 6 Pin SIL | Socket_Strip_Straight_1x06_Pitch2.54mm | P6 |
| 1 | 10 Pin SIL | Socket_Strip_Straight_1x10_Pitch2.54mm | P7 |
| 4 | 8 Pin SIL | Socket_Strip_Straight_1x08_Pitch2.54mm | P8, P9, P10, P11 |
| 1 | 2x3 Pin SIL | Socket_Strip_Straight_2x03_Pitch2.54mm | P12 |
| 6 | MC34631 | Socket_Strip_Straight_1x03_Pitch2.54mm | P13, P14, P15, P16, P17, P18 |
| 1 | Power Board Connector | JST_XH_B20B-XH-A_20x2.50mm_Straight | P19 |
Show 33 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Jumper | 0402 | JP1 |
| 1 | B3U-1000P | B3U-1000P | SW1 |
| 1 | LM2576 | TO-263-5_TabPin3 | V1 |
| 1 | BAT60BE | D_SOD-323 | D1 |
| 1 | 1N5819 | D_SOD-123 | D2 |
| 2 | LED | D_1206 | D3, D4 |
| 1 | 100uH | MSS1278T-334KLD | L1 |
| 1 | Ferrite_Bead | R_1206_HandSoldering | L2 |
| 1 | 330uH | MSS1278T-334KLD | L3 |
| 2 | 100uF | CP_Elec_6.3x7.7 | C1, C14 |
| 1 | 1000uF | CP_Elec_8x10 | C2 |
| 2 | 18pF | C_1206_HandSoldering | C3, C4 |
| 14 | 0.1uF | C_1206_HandSoldering | C5, C10, C11, C12, C17, C18, C19, C20 +6 |
| 1 | 10uF | C_1206_HandSoldering | C6 |
| 2 | 10nF | C_1206_HandSoldering | C7, C8 |
| 1 | 1nF | C_1206_HandSoldering | C9 |
| 1 | 100nF | C_1206_HandSoldering | C13 |
| 1 | 330uF | CP_Elec_6.3x7.7 | C15 |
| 2 | 2.2uF | C_1206_HandSoldering | C16, C23 |
| 1 | 1uF | C_1206_HandSoldering | C24 |
| 2 | 470uF | C_1206_HandSoldering | C26, C27 |
| 2 | 47uF | CP_Elec_6.3x7.7 | C28, C30 |
| 7 | 1.5K | R_1206_HandSoldering | R1, R2, R4, R5, R24, R25, R37 |
| 2 | 1K | R_1206_HandSoldering | R3, R6 |
| 3 | 100K | R_1206_HandSoldering | R7, R17, R36 |
| 1 | 2K | R_1206_HandSoldering | R8 |
| 4 | 50R | R_0603_HandSoldering | R9, R10, R11, R12 |
| 3 | 100R | R_1206_HandSoldering | R13, R14, R34 |
| 2 | 10K | R_1206_HandSoldering | R15, R16 |
| 4 | 75R | R_1206_HandSoldering | R18, R19, R20, R21 |
| 6 | 3K | R_1206_HandSoldering | R22, R23, R26, R27, R28, R29 |
| 4 | 43R | R_1206_HandSoldering | R30, R31, R32, R33 |
| 1 | 220R | R_1206_HandSoldering | R35 |
Avalon communication board design files
The KiCad project lives in the AvalonROV/Electrical_2018 repository on GitHub; these links point at the commit this page was built from.
Avalon communication board: common questions
What microcontroller does the Avalon communication board use?
The Avalon communication board is built around the ESP-12S, from the ESP8266 family.
How big is the Avalon communication board?
The Avalon communication board measures 100 × 62.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Avalon communication board?
115 components, from 53 distinct parts. The full bill of materials is listed on this page.
Where can I download the Avalon communication board design files?
From the AvalonROV/Electrical_2018 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Avalon communication board design in my own project?
The repository has no license, so all rights stay with AvalonROV. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Avalon communication board without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.
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