marioguzzi
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Everything posted by marioguzzi
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thank you Thorsten, both for the reply and for MIDIBOX :-)
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Hi, I'm planning to develop an application that reacts to note-on midi messages to trigger dout pins for a fixed time, using the Timer or Tick function seems the way to go but being not really a coder I'm a bit confused on the approach to use. Any idea? I tried searching the forum but it seems the search engine is not working
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Hi there, I'm not sure if I have to ask, but asking is free so here I am... ;) It's a year now that I have all the components to build a minimal surface stereo SID put aside in a box waiting to be finished... meanwhile I started experimenting in the analog synth world and now I desperately need an oscilloscope for developing and "bug-tracking". Now, there's this friend of mine who would like to have my SID so I was thinking if I could sell it to him to gain some money to help me buying the scope. The price would be the money I spent for PCBs, SID chips, board components etc plus something for the time and money I'll spend for building the enclosure (I'm planning to build a nice wood&alluminium case). Please let me know Dario
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replacing the transistor solved the problem ;) thanks for the support
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no, mine is definitely "noise", not a "tone". Anyone knows if c547c is it equivalent to the bc547?
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thanks for the replies! swapping the chips has no positive effects, and anyway the noise is present even without the chip (and really loud) so I can exclude that the problem is related to the chip. I'd exclude also problems related to power supply, in fact with the other SID module the noise I get is much lower, i.e. volume not comparable to SID output. I'll let you know once I replace T1
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Hi all, after solving the DIN problem I started building the second SID module for my synth. 1 Core r4d 1 Sid r3d (with 8580chip) and 2200uF electrolytic cap optimized c64 psu Due to some soldering paste left on the board when I connected the board to test voltages I got some smoke and sparkles between the voltage regulator and c10(330nF). I cleaned the board and replaced them. Voltages on SID module are 8,9V at the voltage regulator output and 5,15V from Core module Now, I'm getting a lot of noise, with or without the 8580. Probably something got fried during the first test, but I don't know which components to check, any help appreciated ??? Here's a snapshot of scope and spectrum taken WITHOUT the 8580 chip EDIT: oh, don't look for stereo snapshot, as only the problematic SID module is connected to the oscilloscope
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You got it! I was confused by DIN board's silkscreening ::) Looking again at the diagram I noticed that the board has J3 to J10 to connect digital inputs, while on the board only j3 to j6 are printed. thanks and happy holidays :) edit: oh, I'm using setup_8580.hex from midibox_sid_v2_0_rc14.zip found on ucapps. and now it seems working properly, so i don't need to modify the assembler for a specific hardware configuration (single-core mono or stereo sid), right?
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-I thought the application fitted all. where can I find apps for specific configurations? (at the moment I'm using a single SID module but I'm planning to build a single-core/stereo-SID) -I got the encoder from Smash, actually i had a wrong wiring now it's fixed. the result is that also the encoder triggers can bus errors :-\
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Hi, I'm building a midibox sid step A surface, I bought the kit from SmashTv consisting of: 1 Core r4d 1 Sid r3d (with 8580chip) 1 KS0066 lcd mounted in 4bit mode with resistor and diode connected to d3-d2 1 din r5 with 1 rotary encoder, menu button and 5 buttons connected to j3 and j4 boards are fully populated software installed: MIOS 1.9f SID 2.0 applicatio rc14 the problem is that by pressing the menu button or #5 select button I get "CAN bus errors" relative to sid 3 and 4 respectively. Also the rotary encoder is not working properly, when it comes to changing parameters the parameter value on the display blinks but value doesn't change. I tried troubleshooting with srio_interconnection app. and voltage values on the lines are alright (both on j1 and on every single chip), also midi128 app. works properly: all the buttons and the encoder send midi note on/off normally. What could be the problem?
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does it depend on the actual number of bankstick or on the pinning? I mean, could i connect less than 8 banksticks connecting one as A7 to have ensembles stored?