2 layers

CWKeyer

A simple CWKeyer for CW-Paddles based on a ESP8266 with WebInterface

Copper layers: 2
Thickness: 1.6 mm
Parts: 9
Nets: 32
Pads: 65
Tracks, vias: 3, 0
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 9 Nov 2023
Updated: 26 Oct 2026

Overview

CWKeyer is an open-source printed circuit board by StefanKDS, from the StefanKDS/CWKeyer repository on GitHub. It is a 2-layer board with 9 parts on 32 nets, routed with 3 tracks and 0 vias.

Its parts include 4 connectors, 2 resistors and 1 capacitor. It belongs with the ESP8266 boards of this library.

README

README.md

CWKeyer

A simple CWKeyer for CW-Paddles based on a ESP8266 with WebInterface.

SSID: CWKeyer
PW: 123456789
Address: 192.168.4.2

Features

Adjustable speed in WPM and Farnsworth
Internal buzzer for sound output ( can be deactivated in software )
LineOut
2 Memories for 128 char's each
WebInterface for setting the memory and training data
CW Audio decoder ( Under 'Docs' you can find a 'How it works' )

Images

plot

PCB

plot

Circuit

plot

Category and platform

ESP8266

Project files

Show this board on your page

https://pcbkit.io/boards/StefanKDS/CWKeyer

The board's own page, for a message or a post.

Source

Repository: StefanKDS/CWKeyer
Board file: Circuit/KiCad/CWKeyer/CWKeyer.kicad_pcb
Commit: fc129f2
Licence: Not stated

Parts

Qty	Value	Footprint	References
2	10k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R2, R3
1	100nF_Ceramic	Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm	C1
1	AudioIn	Connector_Audio:Jack_3.5mm_PJ320E_Horizontal	J2
1	Encoder	Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical	J1
1	Headphone	Connector_Audio:Jack_3.5mm_PJ320E_Horizontal	J3
1	Keyer	Connector_Audio:Jack_3.5mm_PJ320E_Horizontal	J4
1	Lolin_NodeMCU_ESP8266_V3	PCM_SL_Development_Boards:Lolin_NodeMCU_ESP8266	A1
1	R_Potentiometer	Potentiometer_THT:Potentiometer_Piher_PT-10-V10_Vertical	RV1

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Questions

What parts does the CWKeyer use?

9 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the CWKeyer KiCad files?

From the StefanKDS/CWKeyer repository on GitHub, at the commit this page was made from: the board is Circuit/KiCad/CWKeyer/CWKeyer.kicad_pcb and its schematic Circuit/KiCad/CWKeyer/CWKeyer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the CWKeyer design in my own project?

Its repository states no licence, so its author keeps all rights: ask StefanKDS before reusing the design.