besh
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Everything posted by besh
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I use it as a live toy to combine drum patterns and mix them. The black knobs are to equalize with kill switches.
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Here you can see my midibox project. A 3 oktave Acarde Push Button Style controller with mixer section. It took me about 2 month to build it. Thanks for this great project that makes it possible for me to build that thing.
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Is it possible to split this over two regions. So maybe shift register 0 and 1 change leds by button press and separately from this shift register 2 and 3? How to change the code for that?
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ok I made it. Pin 2 and 4 to ground Pin 7 to 5 Volt Pin 3 is the signal from pot Pin 6 is the amplified signal to ainx module to get a doepfer modwheel work full range you need R1 10k R2 22k thanks for you're help.
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Another question. With this formula V = 1 + R2 / R1 I get the resistor values. So in my case I need V=3,125. I tried it with R2 22k and R1 10k and it doesn't work. Are these resistors to high?
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so I got some mc1458P to do it. This thing has 8 connectors 1 1out 2 1in- 3 1in+ 4 Vcc- 5 2in+ 6 2in- 7 2out 8 VCC+ Is it right that this thing don't need a own power supplie? (vss+ & vss-) So I connect pin 2 to ground (with the 2 resistors) the outcoming voltage from pot to pin 3 and pin 1 to ain module
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Thanks for you're help, I think the best solution would be going with a rail-to-rail opamp. But I'm a dummy when it comes to electricity. Do anyone have a shematic for such a thing?
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Hi, if got some modwheels on my midibox which are only using 40% of a 10k pot. so I got a very limited range of value. Some say use a 30k pot to increase the value, but I havent seen any to buy. Some say there is a solution by modifying the MIDIBox ASM file. Whats the way to go? Anyone already solved this issue?
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It works! After trying two differnt psu which were dc with over 500mA ,I tried a ac psu and it works now. thanks for your patience. But why it works now, I dont know.
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The voltage at J1-2 is about 7,6Volt. If I try to press more then one button together the midibox reset. It must be some voltage problem without pic and all leds burning the Voltage at dout module is only 4 Volt.
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Ahhrrgg, on either way it dont work. 10 times or more turning on, all is fine. next time turning on all leds or only a some are burning but midibox dont start. The voltage on J8 Vd is too low. I proved all soldering an see no problem. Why is the starting prodcedure randomized?
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Looks like you were right. Thanks a lot.
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Yes, J8 Vd 3.8 Volt, and then with putting finger 5 Volt. And sometimes midibox do start, sometimes not, wihout any schematic.
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There are only 3.85 Volt on the line to dout module and if I touch the rc/sc line it goes up to 5 Volt. Mysterious.
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After turning mad,could the problem be that I have not grounded the case? Now with ground it seems to work. EDIT: No it has nothing to do with grounding I ve to search again.
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Hi Thorsten, There are 2 dout modules connected to 60 Leds. The longest cables to the Leds are about 50 cm. Is that maybe to long?
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Hello, this is my first midibox project and I have a problem with the dout module. My mb64 start sometimes , sometimes not. If I put my finger on the sc/rc input of the dout module the box get started. I tested all buttons and all leds, they are working. Do I have to drill a hole in my midibox to get it started by putting my finger on the rc/sc line???