Developed as a by-product of the IBM 1620 Jr. project, the Cadetwriter is a general-purpose ASCII terminal. It can be connected via RS-232 or USB to any mini, micro, mainframe, or replica computer as a terminal device. A commercial quality IBM/Lexmark Wheelwriter 1000 was adapted by interposing a circuit board containing a Teensy 3.5 microcontroller between the typewriter's keyboard and motherboard. Custom firmware controls the typewriter and communicates with the host computer. To support the full ASCII character set, characters not on the printwheel are synthesized using overprinted characters and "period graphics". The Cadetwriter can print up to 16cps and is a reliable, low-maintenance, low-cost substitute for Teletype, DECwriter, Diablo, Spinwriter, Imagewriter, etc. teleprinters.
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Add PDF version of the schematic to allow viewing without opening in
5c1faf8View on GitHubCorrected typo in Wavelink part number 254-015-0155-AB in Parts List
8415eb2View on GitHubUpdated Cadetwriter User Guide based on feedback from Paul Williamson.
9fbfeb8View on GitHubMajor update to firmware (version 6R0) with these changes:
769d7b1View on GitHubAdded ASCII printwheel character set and printwheel character ordering.
e19e117View on GitHubMerge branch 'master' of github.com:IBM-1620/Cadetwriter
e3abf75View on GitHub