I like the mfj Morse reader with key input. Problem is it is expensive and doesn't do what I want. I would like to have a 1x40 LCD screen and a built in 9 pin dot matrix printer. I have no idea what to head to select but the point is being as small as possible. It shouldn't be too hard to build a device to slice rolled paper into 1 line strips.
I want a project to play with so I already understand that even the best cw decoders miss a lot. Noise and weak signals and so forth. The problems I perceive is dot matrix heads are loud. But the tape can be for archival and messages can be stored in memory to be printed at the end of transmission. So I have some knowledge of the parallax propeller microcontroller, but none dealing with motors. Basically the roughly 1" wide paper would advance horizontally across the print head. So I'm imagining a p-touch type label maker setup. A rubber friction pad on a pin roller would advance the paper.
So any ideas or a schematic for a 9 pin dot matrix head.
I want a project to play with so I already understand that even the best cw decoders miss a lot. Noise and weak signals and so forth. The problems I perceive is dot matrix heads are loud. But the tape can be for archival and messages can be stored in memory to be printed at the end of transmission. So I have some knowledge of the parallax propeller microcontroller, but none dealing with motors. Basically the roughly 1" wide paper would advance horizontally across the print head. So I'm imagining a p-touch type label maker setup. A rubber friction pad on a pin roller would advance the paper.
So any ideas or a schematic for a 9 pin dot matrix head.