Comments on: Parallel Port Transistor Based Interface http://www.getlofi.com/?p=743 Circuit Bending tips and resources for Beginners and Pros alike. Please send tips to circuitmaster@gmail.com Fri, 10 Sep 2010 07:00:29 +0000 http://wordpress.org/?v=2.9 hourly 1 By: CM http://www.getlofi.com/?p=743&cpage=1#comment-38244 CM Mon, 31 Mar 2008 13:43:41 +0000 http://www.getlofi.com/?p=743#comment-38244 Hey Silas. I think you just type ./C-B_.exe and hit enter. Make sure that the CGA.BGI file is in the same folder as the app that you are running. I had good luck with free dos. There is a self booting image disk that I made, however never uploaded. If you hang on for just a little bit I'll get it up there. Thanks. Hey Silas. I think you just type ./C-B_.exe and hit enter. Make sure that the CGA.BGI file is in the same folder as the app that you are running.

I had good luck with free dos. There is a self booting image disk that I made, however never uploaded. If you hang on for just a little bit I’ll get it up there. Thanks.

]]> By: Silas http://www.getlofi.com/?p=743&cpage=1#comment-38216 Silas Mon, 31 Mar 2008 10:26:48 +0000 http://www.getlofi.com/?p=743#comment-38216 Nice! I've build the module and everything.. Got it hooked up to an old Compaq Contura 400C, booting DOS 6.22.. Now my question is how do i run this frigging app. ? I'm trying as hard as i can, but it just won't work.. I also tried just using MS-DOS but it started complaining about INITGRAPH not being initialized, so how do you do that? Damn this is frustrating... Nice! I’ve build the module and everything.. Got it hooked up to an old Compaq Contura 400C, booting DOS 6.22.. Now my question is how do i run this frigging app. ? I’m trying as hard as i can, but it just won’t work.. I also tried just using MS-DOS but it started complaining about INITGRAPH not being initialized, so how do you do that? Damn this is frustrating…

]]> By: Make a mellotron out of walkmansotron - Weekend Projects Podcast http://www.getlofi.com/?p=743&cpage=1#comment-14246 Make a mellotron out of walkmansotron - Weekend Projects Podcast Sat, 29 Sep 2007 19:29:40 +0000 http://www.getlofi.com/?p=743#comment-14246 [...] This week Eric Beug joins me this week to make a musical instrument out of walkmans. The mellotron is an instrument that uses taped audio through a keyboard interface. Finding inspiration in Mike Walters’ Melloman, we hacked together a simple circuit to trigger loops of tape to make a super simple sampler. We had originally thought to use getlofi’s parallel port sequencer, but ended up going with the arduino instead. I’ll have the pdf, including the program that goes on the arduino, available for download Saturday. - Subscribe Link [...] [...] This week Eric Beug joins me this week to make a musical instrument out of walkmans. The mellotron is an instrument that uses taped audio through a keyboard interface. Finding inspiration in Mike Walters’ Melloman, we hacked together a simple circuit to trigger loops of tape to make a super simple sampler. We had originally thought to use getlofi’s parallel port sequencer, but ended up going with the arduino instead. I’ll have the pdf, including the program that goes on the arduino, available for download Saturday. – Subscribe Link [...]

]]> By: Make a mellotron out of walkmans - Weekend Projects Podcast http://www.getlofi.com/?p=743&cpage=1#comment-14098 Make a mellotron out of walkmans - Weekend Projects Podcast Fri, 28 Sep 2007 16:21:27 +0000 http://www.getlofi.com/?p=743#comment-14098 [...] This week Eric Beug joins me this week to make a musical instrument out of walkmans. The mellotron is an instrument that uses taped audio through a keyboard interface. Finding inspiration in Mike Walters’ Melloman, we hacked together a simple circuit to trigger loops of tape to make a super simple sampler. We had originally thought to use getlofi’s parallel port sequencer, but ended up going with the arduino instead. I’ll have the pdf, including the program that goes on the arduino, available for download Saturday. - Subscribe Link [...] [...] This week Eric Beug joins me this week to make a musical instrument out of walkmans. The mellotron is an instrument that uses taped audio through a keyboard interface. Finding inspiration in Mike Walters’ Melloman, we hacked together a simple circuit to trigger loops of tape to make a super simple sampler. We had originally thought to use getlofi’s parallel port sequencer, but ended up going with the arduino instead. I’ll have the pdf, including the program that goes on the arduino, available for download Saturday. – Subscribe Link [...]

]]> By: Make a Mellotron out of Walkmans - Weekend Projects Podcast at I Make Things http://www.getlofi.com/?p=743&cpage=1#comment-14057 Make a Mellotron out of Walkmans - Weekend Projects Podcast at I Make Things Fri, 28 Sep 2007 12:42:04 +0000 http://www.getlofi.com/?p=743#comment-14057 [...] This week Eric Beug joins me this week to make a musical instrument out of walkmans. The mellotron is an instrument that uses taped audio through a keyboard interface. Finding inspiration in Mike Walters’ Melloman, we hacked together a simple circuit to trigger loops of tape to make a super simple sampler. We had originally thought to use getlofi’s parallel port sequencer, but ended up going with the arduino instead. I’ll have the pdf, including the program that goes on the arduino, available for download Saturday. - Subscribe Link [...] [...] This week Eric Beug joins me this week to make a musical instrument out of walkmans. The mellotron is an instrument that uses taped audio through a keyboard interface. Finding inspiration in Mike Walters’ Melloman, we hacked together a simple circuit to trigger loops of tape to make a super simple sampler. We had originally thought to use getlofi’s parallel port sequencer, but ended up going with the arduino instead. I’ll have the pdf, including the program that goes on the arduino, available for download Saturday. – Subscribe Link [...]

]]> By: norm http://www.getlofi.com/?p=743&cpage=1#comment-9901 norm Tue, 19 Jun 2007 11:12:25 +0000 http://www.getlofi.com/?p=743#comment-9901 there is a processing-extension for communicating with the parallel port: http://www.d-parc.be/index.php/LPT+in+Processing;18 unfortunaly only in German.. there is a processing-extension for communicating with the parallel port:
http://www.d-parc.be/index.php/LPT+in+Processing;18
unfortunaly only in German..

]]> By: ovlar http://www.getlofi.com/?p=743&cpage=1#comment-7911 ovlar Sat, 14 Apr 2007 11:54:36 +0000 http://www.getlofi.com/?p=743#comment-7911 just stick a couple of diodes in to protect the parallel port. Either that or use some optocouplers and an external power supply, either a battery or a dc pack. Using optocouplers you can be sure that there is no way that your pooter is gonna be smoked. You can make your own optocouplers cheap out of quick response LDRs/photodiodes and an LED. just stick a couple of diodes in to protect the parallel port. Either that or use some optocouplers and an external power supply, either a battery or a dc pack. Using optocouplers you can be sure that there is no way that your pooter is gonna be smoked. You can make your own optocouplers cheap out of quick response LDRs/photodiodes and an LED.

]]> By: zeitguy http://www.getlofi.com/?p=743&cpage=1#comment-7811 zeitguy Wed, 11 Apr 2007 20:03:37 +0000 http://www.getlofi.com/?p=743#comment-7811 This is cool. I will see you in Minneapolis on the 21. I have a few old systems that I can put this up on, and many bent toys waiting for some patterned switching. This is cool. I will see you in Minneapolis on the 21. I have a few old systems that I can put this up on, and many bent toys waiting for some patterned switching.

]]> By: CM http://www.getlofi.com/?p=743&cpage=1#comment-7761 CM Tue, 10 Apr 2007 18:21:53 +0000 http://www.getlofi.com/?p=743#comment-7761 Hey ProtoRob, I did a test mod on the DSI kawasaki and the buttons are triggered by a positive voltage, so you will need to have a PNP transistor connected from the Voltage Trigger Trace to the Button Trace. I just soldered the wires to the bottom of the black blob PCB board where it is soldered to the main board. Try connecting the very far right joint to the joints on the left. They should start making sounds. Once you find the connection you will have to solder the Collector of the Transistor to the Voltage Trigger and the Emitter to the actual button trigger. I will post a better image of that particular keyboard tonight with points to connect to. Hey ProtoRob, I did a test mod on the DSI kawasaki and the buttons are triggered by a positive voltage, so you will need to have a PNP transistor connected from the Voltage Trigger Trace to the Button Trace. I just soldered the wires to the bottom of the black blob PCB board where it is soldered to the main board. Try connecting the very far right joint to the joints on the left. They should start making sounds. Once you find the connection you will have to solder the Collector of the Transistor to the Voltage Trigger and the Emitter to the actual button trigger.

I will post a better image of that particular keyboard tonight with points to connect to.

]]> By: protoRoB http://www.getlofi.com/?p=743&cpage=1#comment-7758 protoRoB Tue, 10 Apr 2007 17:36:49 +0000 http://www.getlofi.com/?p=743#comment-7758 hello friends, i'm actually working on the interface to aply to a kawasaki dsi keyboard, but i can´t realeye where is the ground, i've just opened the toy and lift the button ruber and i've noticed that there are xtrange conection between the buttons (extrange at least for me) i hope to solve this isue in this days. If you have found any clue just post it. hello friends, i’m actually working on the interface to aply to a kawasaki dsi keyboard, but i can´t realeye where is the ground, i’ve just opened the toy and lift the button ruber and i’ve noticed that there are xtrange conection between the buttons (extrange at least for me) i hope to solve this isue in this days. If you have found any clue just post it.

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