CGS keyboard scanner sub-module: Difference between revisions

← Older edit

CGS keyboard scanner sub-module (view source)

Revision as of 14:50, 19 July 2022

127 bytes added , 1 year ago

m

Text replacement - " - archived" to " - archived"

VisualWikitext

Rob Kam

Bureaucrats, Interface administrators, Administrators

2,280

edits

Revision as of 20:40, 30 November 2018 (view source) Rob Kam (talk \| contribs) (Created page with "<!-- file missing thumb\|center\|600px\| --> '''CGS25''' the '''CGS keyboard scanner sub-module''' module is intended for use in conjunction...")		Latest revision as of 14:50, 19 July 2022 (view source) Rob Kam (talk \| contribs) m (Text replacement - " - archived" to " - archived") Tag: Manual revert
(7 intermediate revisions by the same user not shown)
Line 1: <!-- file missing [[File:cgs_photo_cgs25_keyscan.jpg\|thumb\|center\|600px\|]] --> '''CGS25''' the '''CGS keyboard scanner sub-module''' module is intended for use in conjunction with the [[~~Ken Stone~~CGS parallel port adapter for IBM PCs\|parallel port adapter]] and a PC. It allows the PC to scan the synthesizer keyboard to which it is connected, then to drive [[CGS digitally controlled oscillator\|DCOs]] or VCOs via [[CGS D/A converter\|D/A Converter]]s. It essentially contains the required parts to scan 32 keys, so two or more will be required for larger keyboards. As shown in the diagrams, it is wired so each group of 8 keys is accessed via an external select line, though a little cutting and jumpering using the alternate select lines of the 74LS138s, the keys can be selected as groups of 16 as is required by the parallel port adapter. Line 9: [[File:cgs_schem_cgs25_keyscan.gif\|thumb\|center\|600px\|The schematic of the Keyboard Scanner. Click for a larger version]] For a general description of how it works, please see the [[~~Ken Stone~~CGS parallel port adapter for IBM PCs\|parallel port adapter]]. == Construction == Line 58: === Notes === * Fast 74xxxx CMOS chips with the same pin configuration can be used in the circuit. == CC-BY-NC == Readers are permitted to construct these circuits for their own personal use only. Ken Stone retains all rights to his work. == See also == * [[~~Ken Stone~~CGS parallel port adapter for IBM PCs\|Parallel port adapter for IBM PCs]] * [[CatGirl_Synth#The_CGS_modules\|The CGS modules]] * [[CGS parts FAQ]] == References == * ''[https://web.archive.org/web/~~20180209234737fw_~~20180209234737f/http://www.cgs.synth.net:80/modules/cgs25_keyscan.html Keyboard Scanner sub-module for music synthesizers.]'' ~~(archived)~~ by Ken Stone, 2001, with permission of the author - archived == External links == * [http://groups.yahoo.com/group/cgs_synth CGS Synth discussion group], for discussion of locating parts, modifications and corrections etc. [[Category:CGS ~~modular~~digital synth]]