Build a Morse-Code keyer for learning & operatingDesigned by Napa Engineering in United States of America
Design Aim The Keyer PCB is made of two boards which is the framework for the STRAIGHT-KEY/PADDLE sounding side-tone as well as sending Morse code to radio. The boards offer flexibility and minimize …Read More…
The Keyer PCB is made of two boards which is the framework for the STRAIGHT-KEY/PADDLE sounding side-tone as well as sending Morse code to radio. The boards offer flexibility and minimize wiring chores by hosting the following components:
Another important factor in design is allowing the builders freedom in terms of the form-factor flexibility, placement of the components, and if to add/eliminate some parts at will. One example is if LCD module is built-in, perhaps the power indicator, green LED, may be eliminated that LCD backlit is on all the time. Thus, the boards can be used for other purpose than the KEYER project entirely.
The photos show one of the form-factors we came up with building a CW keyer. More details are available in the USER GUIDE document including schematics, how to use the firmware (available as compiled hex file), and viewing the key/paddle actions on LCD display as well as on the PC detailing the precise key/paddle actions.
Also built-in in the firmware is Farnsworth CW-Trainer between 5 to 20 WPM where characters are sent to a local speaker, if one is provided. Else, the same can be sent to the user's radio as if the operator is working in CW mode using a key/paddle.
All parts are thru-the-hole type making it easy to build
1) Main board accommodates
2) Input/Output board accommodates
What makes it unique
Since each board has different functions but working together they need to communicate. They can be, however, located anywhere to fit the form-factor user choose to have. That is the premises of having separate boards dividing the tasks.
When the boards are separated, the cabling must be done between the 10-pin headers. Else, the two boards can be hard soldered to act as a single board. The LCD display module augmented is the same idea that the main board can be piggybacked on the display module or connected via 12 hookup wires.
As to other parts, such as switches & LEDs, they are not mounted on the PCB offering freedom to locate the parts and boards where it is most logical and convenient, thus fabricating an enclosure the way the builder wishes.
Assembling & Testing
By providing the schematics and firmware, the maker is giving the builder all the information they need to build/modify a functioning keyer. The firmware will also help to ensure that the PCBs & assembly are done correctly, as it will check all the necessary components and connections. Additionally, component level details are shown on the schematics included in the 'Documentation' link below.
Should a user wish to have other than Metro-mini controllers, one can fabricate a conversion adaptor to fit into the main board very easily and inexpensively, yet, having all the peripheral resources available. Of course, by doing so, it requires a different firmware.
We are offering the PCBs only at this time but for any reason the builder wishes to have stuffed boards or an assembled keyer, please send an inquiry email to us.
Now, the user has a system to write one's own program, display text, and ample I/O ports making a CW keyer or any other similar project.
No country selected, please select your country to see shipping options.
No rates are available for shipping to .
Enter your email address if you'd like to be notified when CW Keyer PCB can be shipped to you:
Thanks! We'll let you know when the seller adds shipping rates for your country.
|Shipping Rate||Tracked||Ships From||First Item||Additional Items|
We recognize our top users by making them a Tindarian. Tindarians have access to secret & unreleased features.
We look for the most active & best members of the Tindie community, and invite them to join. There isn't a selection process or form to fill out. The only way to become a Tindarian is by being a nice & active member of the Tindie community!