organbuilding.wordpress.com
Well, that’s a lot neater | organbuilding
https://organbuilding.wordpress.com/2012/08/22/well-thats-a-lot-neater
I have speakers in my bones, oscillators in my head. Laquo; Light is the MIDI messenger. The mysteries of the lower manual. Well, that’s a lot neater. August 22, 2012 by Rob Mitchelmore. Pruning the electronic forest. The version 2 relayboard is on the right; it uses the solid-state relays mentioned in my last post to control keys. It works. I’m making another one now; after that I will have enough to MIDI-ify the whole upper manual. Leave a Reply Cancel reply. Enter your comment here.
organbuilding.wordpress.com
opto2 | organbuilding
https://organbuilding.wordpress.com/2012/12/03/the-mysteries-of-the-lower-manual/opto2
I have speakers in my bones, oscillators in my head. The mysteries of the lower manual. Leave a Reply Cancel reply. Enter your comment here. Fill in your details below or click an icon to log in:. Address never made public). You are commenting using your WordPress.com account. ( Log Out. You are commenting using your Twitter account. ( Log Out. You are commenting using your Facebook account. ( Log Out. You are commenting using your Google account. ( Log Out. Notify me of new comments via email.
organbuilding.wordpress.com
Rob Mitchelmore | organbuilding
https://organbuilding.wordpress.com/author/kerastion
I have speakers in my bones, oscillators in my head. Https:/ organbuilding.wordpress.com. Neurotic computer scientist cross musician cross poet. Posts by Rob Mitchelmore:. December 3, 2012. The mysteries of the lower manual. August 22, 2012. Well, that’s a lot neater. August 4, 2012. Light is the MIDI messenger. July 22, 2012. Somewhere, a cable installer is crying. July 20, 2012. February 24, 2012. And the musical instrument of the day is…. February 17, 2012. Older Posts ». Light is the MIDI messenger.
organbuilding.wordpress.com
Testing the relayboard | organbuilding
https://organbuilding.wordpress.com/2012/07/20/testing-the-relayboard
I have speakers in my bones, oscillators in my head. Laquo; And the musical instrument of the day is…. Somewhere, a cable installer is crying. July 20, 2012 by Rob Mitchelmore. I’m still alive, and so is the project! Relayboard no. 1 is finally complete; this board, to remind any imaginary readers I may have, will electrically replace about half the keys on the top keyboard. I wonder which species of bird is nesting on my sofa. On July 20, 2012 at 8:17 pm. Leave a Reply Cancel reply.
organbuilding.wordpress.com
The mysteries of the lower manual | organbuilding
https://organbuilding.wordpress.com/2012/12/03/the-mysteries-of-the-lower-manual
I have speakers in my bones, oscillators in my head. Laquo; Well, that’s a lot neater. The mysteries of the lower manual. December 3, 2012 by Rob Mitchelmore. I am writing this when I am very tired. It will be terse.]. Essentially, then, the organ needs two sets of opto-isolators, one for each set of contacts. This means that each pin on the MIDI board needs to switch two. This means that, instead of our previous circuit, for each key, we have:. S) This /should/ be interchangeable with v2 (so long as I&#...
organbuilding.wordpress.com
Somewhere, a cable installer is crying | organbuilding
https://organbuilding.wordpress.com/2012/07/22/somewhere-a-cable-installer-is-crying
I have speakers in my bones, oscillators in my head. Laquo; Testing the relayboard. Light is the MIDI messenger. Somewhere, a cable installer is crying. July 22, 2012 by Rob Mitchelmore. 8220;no, no, make it stop, please at least use cable ties…”. There are now 20 notes active on the relayboard. This is all the notes I can get working without going back and fixing some dud soldering. What’s good about the relayboard design? It is electrically very simple, and within even my questionable powers to assemble.
organbuilding.wordpress.com
Light is the MIDI messenger | organbuilding
https://organbuilding.wordpress.com/2012/08/04/light-is-the-midi-messenger
I have speakers in my bones, oscillators in my head. Laquo; Somewhere, a cable installer is crying. Well, that’s a lot neater. Light is the MIDI messenger. August 4, 2012 by Rob Mitchelmore. This is a nerdy update at least as much for my own memory as for anything else.). It should be possible to wire one of these up like this (ish):. I’m looking at a Toshiba quad-opto-islator chip that will switch up to 55v at up to 150ish mA ( datasheet. Still need, though, to find the value of the resistor that protec...
