x0xbox not functioning, random leds (faulty pcb?)

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wires
 
Posts: 13
Joined: Wed Nov 30, 2005 1:22 am

Post by wires »

ARGh!

right, my stupid ass reversed D2, ... that's why the reset line was low.

man, can't believe i didn't notice that, checked all components at least twice... n00b

still, she doesn't work 100% yet...

what seems to work well, for example:

- basic keys, leds, etc...
- midi in works flawlessly: notes are read and played correctly including slide and accent.
- midi out works, in play mode midi clock is transmitted

what doesn't work well:

- pattern edit works as described in STEP mode only. i can edit and
store patterns. but R/S mode doesn't play, but midi clock is transmidded
the synth plays a single decaying note when RUN, altering pitch now and than, seems unrelated to pattern contents.

- random mode plays 3 16th notes followed a 16th rest, in a loop. pitch, accent, slide all remain constant... is this intentional? doens't sound very random to me *grins*

- tempo led doesn't really blink @ bpm speed.. or, sometimes it does, sometimes it doesn't, it does change blink speed, but not according to bpm. or maybe i'm tripping..

- keyboard mode seems to work weird.... e.g. note is played,


so i think, "maybe mcu flash is BANNED? lets reflash"

- usb_tx works, "cat /dev/tty.usbserial-01B" outputs characters when i turn the tempo knob.

- last time i checked with the scope the usb_rx from the FTDI chip
transmitted some pulses. i had to return the scope just now so couldn't recheck this.

- but, JAvrProg nor c0ntr0l cant upload firmware or connect

Code: Select all

Connecting...
Sending Packet: 0100006b
*** INCOMPLETE PACKET ***
* received 0 bytes:
* []
Bad packet!
Attempting to locate an AVR chip on port /dev/cu.usbserial-0B1
Failed.
likewise, minicom <esc><esc> in bootload mode: zlitch



if something springs to mind, please let me now...

for now, i'll wait for the programmer and new mega to arive and burn a new mcu.

finally, thanks SO much for your help and for designing, publishing and making kits of this machine. *bows*

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