HardLabs

Seatalk wifi

atonizzo·seatalk_wifi·hw/seatalk_wifi.kicad_pcb

Seatalk wifi PCB layout, top view — open source ESP8266 board by atonizzo

About the Seatalk wifi PCB

Seatalk wifi is an open source ESP8266 PCB design by atonizzo, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 31 × 22 mm, with 32 components from 20 distinct parts.

Its main chip is the ESP-12E, from the ESP8266 family. Other key parts include the AP62300WU-7 and MAX3221CPW. By type, the board carries 12 capacitors, 11 resistors, 3 ICs, 2 transistors, 2 switches and 1 diode.

It belongs with the iot & wireless designs in this gallery.

From the project

A bridge between Raymarine's Seatalk protocol and NMEA 0183 over a WiFi network.

- Allows older instrumentation using SeaTalk1 to be connected to newer chartplotters receiving NMEA sentences via WiFI - The WiFi link allows the instrumentation to be installed in out-of-the-way location thus freeing space in the navigation area - The board can be installed very close to the data source and does not require laying out data cables to a chart plotter. All that is needed is a 12 Volt connection to the battery

Seatalk wifi, from the project README
From the project README

Main components on the Seatalk wifi

AP62300WU-7ESP-12EMAX3221CPW

Seatalk wifi bill of materials (BOM)

32 components, 20 distinct parts.

QtyPartRefs
1
AP62300WU-7
AP62300_SOT23-6
U1
1
ESP-12E
U2
1
MAX3221CPW
MAX3221CPWR
U3
2
2N7002-G
2N7002
Q1, Q2
2
SW_SPST
SW1, SW2
1
N/A
LED_A1K2
D1
1
N/A
3.3uH
L1
7
N/A
0.1uF
C2, C8, C9, C10, C11, C12, C13
2
N/A
22uF
C3, C5
1
N/A
1uF
C4
1
N/A
10uF
C6
1
N/A
47pF
C7
1
N/A
330
R2
1
N/A
75K
R3
1
N/A
24K
R4
4
N/A
10K
R5, R6, R7, R10
1
N/A
1000
R8
1
N/A
4700
R9
1
N/A
1K
R11
1
N/A
0
R12

Seatalk wifi design files

The KiCad project lives in the atonizzo/seatalk_wifi repository on GitHub; these links point at the commit this page was built from.

Seatalk wifi: common questions

What microcontroller does the Seatalk wifi use?

The Seatalk wifi is built around the ESP-12E, from the ESP8266 family.

How big is the Seatalk wifi PCB?

The Seatalk wifi measures 31 × 22 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Seatalk wifi?

32 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the Seatalk wifi design files?

From the atonizzo/seatalk_wifi repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Seatalk wifi design in my own project?

Yes, under the terms of its Apache-2.0 license, which atonizzo chose for the repository.

Can I test firmware for the Seatalk wifi 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.

Similar boards