Starspawn

Its the same if I power from a USB charger at least, Ill add a 9V connection tomorrow. Also tried reflowing everything in power section with no luck. Just since the diagram doesnt say, and USB works so I figure its no problem ... but what are the 4 close connections under the USB, and should they be completely isolated? I just noticed they were so close that I wouldnt see if a trace connected any of them. EDIT: 5V is up on J2 almost instantly So Ill change the LF33, and its 2 caps, and hope that solves it. Thanks for steering ;)

Its definetly the power on voltage thats bad. Going in from cold it will start at 2.2ish, then slowly increase (lets say 15-20 seconds) until it jumps to 3.5V, If I power on and off quickly from there it will start up correctly. Could the rectifier thing be bad? Other options? I had this from the smashTV kit: http://au.rs-online.com/web/p/bridge-rectifiers/6296011/ While schematic has this: http://www2.mouser.com/ProductDetail/Vishay-Semiconductors/B40C800G-E4-51/?qs=sGAEpiMZZMtQ8nqTKtFS%2fMRt2%2f0z7Bct7SXSkGPtfVQ%3d

Well, I use an external one already at 2.5A 5V so should be well over needed, but I agree it might be a power supply issue after all. As I wrote there seems to be a drop in voltage on power up, and as it works when its been on, gotten contact with MIOS and is reset its just on startup/power on its a problem. Reading a bit elsewhere here I saw a discussion regarding displays (running 2 on lpc17) where that person had problems with 2 displays until you delayed the display something? I couldnt download those files and try myself. Also Im using 5V displays but the 74HC595 as it was easier to get at the time (which the other guy also did). Ill order the 74HCT595 and see if it helps, and also see if I can measure more presisely the voltages at startup, but if you still have the file with display delay I could try that as well? Thanks David

Some progress, after using a smaller card (2GB) formatting from MIOS and getting over HW file with filebrowser, I can get it to recognize the SD card without error so it loads a session whenever I reset from MIOS and no more Fat nonsense (well sometimes). But ... if I reset with power off/on there is nothing on the displays. It DOES start my session (Most of the time ... I can then press play, see things work by the leds and so on) ... but no display until I reset with MIOS. EDIT THE MANY: It also sometimes work WITHOUT MIOS, if I turn it on, almost instantly remove SD-Card, then insert it again when display shows searching for SD card. Is it possible to delay the SD-Card check? But not practical ofc, I think Im at the end of what I can troubleshoot myself now. If it matters Ive only jumpered J17 (for usb power, or actually thats a switch now), J15 (as 5V) and J4A is connected. So nothing on J18 or 26 which I dont know what does. Oh and it might matter that the board is LPC17 V1.0 , must be two years+ since I first ordered it now ( a year inbetween was waiting for CS pcb, rest being scared of it). Green one though, not red needing fix. Any other builds/betas than 0.88 I should try?

Formating from MIOS doesnt seem to work? It does start after a while, but no formating actually happens even though it reports success. All files are still there, and uploading to SD card does not work from filebrowser either. I can reset the Seq from MIOS btw, and it will boot up correctly, but it will still give me nothing on unplugging and plugging in power, with same fat error for sd-card.

Progress: After a new port and SD-Card it can finally be found quickly, but ... see picture. First time I tried it worked, on next startups (and installations) that. Card is formatted to Fat32 (from windows 7) and has only the wilba HW file on it. No name on root. 3.68 GB Is that somehow wrong? Edit: Noticed 3.3V was down to 2V with backlight, turned that down, back to 3.4ish, now the error is gone, can find SD card quickly, but not file on it. Hmm, monitoring at J10 it seems like the lower voltage is not cured only by turning down display, but that it will be low under load (startup and LPC17 working). Ill try using a power only USB connection. Nope ... I either get no hw found if SD-Card is recognized, and if not the format error, once in a while it will work but not on restart. Is 4GB or 8GB to much? Ive tried both but have no smaller ones. EDIT another hour gone: If I install firmware, disconnect and connect sd card, go to browser instead of sending sdcard command and then edit and save the HW file ... it will be autoloaded, and on every try the sd card file will be read valid after. However it still resets at startup, and after reading someone elses problems Im currently trying to save a session, but either that takes more than 5 minutes or its hung up on that step. I can now create session if I not only open HW file as text but also as hex and save both again. However, if I disconnect power and start up again ... back to start. It does seem like the sequencer is working (all buttons, all leds, tempo led,play after starting session and so on), but it wont load on startup.

Thanks, will do :smile: But it does seem to install and work when Im installing, its the next startup that gives me nothing, so figured it might be SD card as its either slooow to find it or takes several tries. Now after installing driver I get hard fault at PC=0x000386c0 when using command sdcard

Think my SD card setup is flaky, I can get the displays to work IF I upload the .088 firmware AND get it to recognize the SD card file all in one session, but after closing MIOS and powering up Im back to square "not loading default or showing anything on screen". I can now get it to recognize the core over segv4 midi but that also takes a few tries. Ill get a new SD Card thing tomorrow and see if it helps. Or is there perhaps a save function Ive missed after installing and before closing Mios?

Found the construction guide again, got so far as to send sdcard command, it did everything BUT give the last File /MBSEQ_HW.V4: valid And now when I open Mios I get the SQv4 midiports, but NOT Mios so cant redo that step. (Edit: Holding bootloader works Doubleedit: Also just clicking around on the Seq midi ports and waiting a bit) When connecting wilba display, transmitter and quad midi after I still get same display as in 1st picture. Bedtime now, but any tips much appreciated. Tried a few more times, I only get MBSEQ_HW.V4 doesnt exist or hasnt been reloaded Version I downloaded and installed is V4.088, used LPC17 file and the wilba file in same main folder. Managed to get a valid, still nothing with panel connected.

So, I think I got all the hardware done correctly, was confident enough to turn on, put in J27 to hold state but .... Nothing. LPC17 did do the three quick fades so thought bootloader was ok, but maybe not? Just copied wilba file directly to SD without any formating. Using just windows midi. (The 4 track group lights are also on off screen). Sooo, remove core (I used headers), put back other part and reflash? EDIT: I cant set MIOS32 as midi in the application? Windows 7 Pro, Mios Studio 2.4.6

Thanks again, on to the next stages :)

Thanks :smile: LPC is good now, and this is what I get on fuses (Im asking since I had to change the settings on some of the mutable instruments ones with this programmer).

Im a bit dumb when it comes to the programming part, so need some help here. Sorry if its covered elsewhere. I downloaded the newest software for LPC but on it theres no RTOS option, is that perhaps called something else now or only supported in older versions? pic attached Also with the quad midi out, is it the exact same code on all PICs, and what should the fuse settings be?

Started arriving as well, thanks Blingy :)

Dont care, still fair :)

Excellent blingy, thanks a lot!

I need a pair as well if anyone needs to fill up an order.

Was in shop now after the holidays. Dont know anything about how many, just that I ordered mine :)

Id like the last one please Ill be needing it later.

Anyone gotten wilba PCBs since January?

Also waiting my turn, meanwhile as screen is not in kit, is this compatible? http://www.ebay.co.uk/itm/ART-New-LCD-2x40-with-LED-b-l-Y-G-HD44780-standard-ABC040002A00-YIY-R-01-/390792720382?pt=LH_DefaultDomain_212&hash=item5afd0faffe

Cant quite figure out how to edit the wiki, so if youre reading this SmashTV, add me to the panel and parts list with one of each. Edit: Scratch that, this is the Lite version? Was looking for the WIlba one.