Shuriken

Just a suggestion, maybe it's time to ask someone on this forum to fix it for you. Personally i would not mind to have a look, but i won't have time till atleast first week of october.

If you want i might be able to help you. But it's probably cheaper to have someone in Italy help you out. I know that Antix is based in Napoli. Not sure though if he has the time.

If you buy it at mouser there is a 5 euro price difference. Not sure if that qualifies as much more expensive :wink:

The seller did sell you the wrong board though. Maybe you can get your money back. The description clearly says STM32F407.

One thing you could check, if you have 5V near the banksticks. I remember having this problem when i didn't size my transformer correctly.

Looks like it's the project.bin (see: http://www.midibox.org/dokuwiki/doku.php?id=eclipse)

Looks very very good, nice job!

I am pretty sure the case is already conductive since it's metal :rolleyes: Connecting earth to the case is something which is a nobrainer, same goes for the fuse on the mains part. But it's just our advice to keep you and your loved ones safe, as always you are welcome to ignore our advise. For the cable loss part they invented the sense mechanism, which is on a lot of switching psu these days. The psu will compensate for any cable losses. And there is no part in the MB6582 which will need 2A.

I had been looking on this schematic, the extra holes are probably from a later revision. So i did not notice. No, it's not ground. It could very well be you killed T1 with the extra wire.But since i don't have the schematic of the new revision i am not sure. But since T1 is responsible for the current flow to the backlight, it's a likely suspect. I would remove the extra wire and my guess is you need to replace T1 (BC337). But you could check first.

I assume this is the datasheet for the Optrex Step part. The power for the backlight is indeed on pin 1 + 2 instead of the normal 15 + 16. But did you do anything else to mod it? How are DB6+7 on the lcd connected to the datalines on the Sammichsid base pcb?

You can find a picture here: https://lh3.googleusercontent.com/dZALRRQvb7YxPNpFAARGiMEV8mA4MdPp0mFNTtOQjxo=w1597-h574-no @Ilmenator, i think this is the one you mean The depth is 29 cm.

I have 3 1HE(U) Cabinets here. 2 are still new in original box, one i have opened. I bought these at Pollin for 22,65 euro. Quality is not great, but so is the price. I want to sell these for 15 Euro the piece. Ask for postage costs to the country in question.

Cool, i have been playing with the idea to have the pcb from Christian made. Good to hear that someone has tried them.

Indeed, you better connect the earth connector to the case. And i hope that you have one of those fuses on the mains input, otherwise if the thing short circuits, it wont turn off....

It seems the hardsid.com domain is down. But all the links are on the fb page: https://dl.dropboxusercontent.com/u/269512280/HardSID_files/drivers_docs/usb_manuals_drivers_vst/hardsid_4u_vsti.rar

Yes please do!

Looking good Benoit. And i see an XMOS xCore there.

I cannot take credit for the table. It's an article on a dutch website (circuitsonline.net) The pcb is also there. Yes the transformer voltage is in AC (haven't yet seen DC transformer :wink:) C4 needs to be applied in powersupply box. As for the LM2596, you could experiment with faster diodes (MUR120) to rectify. And a big capacitor in front of it.

Unfortunately it is not that easy. It all depends on what regulator you use and so on. For the 78xx regulator the following table applies: Output-voltage Outputcurrent Transformervoltage V 100 mA 1 A 2 A V 2 78L02 - - 5 3,3 78L33 7833 - 9 5 78L05 7805 78S05 9 6 78L06 7806 - 9 7,5 - - 78S75 9 9 78L09 7809 78S09 12 10 78L10 - 78S10 12 12 78L12 7812 78S12 12 15 78L15 7815 78S15 15 18 78L18 7818 78S18 18 24 - 7824 78S24 21 of 24 The parts need to be adapted to current and voltage. With a low voltage (below 5 V) C1 can be decreased to 1000 µF. With voltages above 15 V en 1 A, C1 needs to be 4700 µF. With currents above 1 A moeten the diodes need to be replaced by 1N5401's. C4 needs to be applied if the wiring between powersupply and appliance exceeds ±15cm Partlist: C1 = 2200 µF/35 V (see text for remark) C2, C3 = 100 nF C4 = 10 µF/35 V (see text for remark) Br1 = 4x 1N4002 of 1N5401 (see text for remark) Vr1 = 78xx T1 = trafo

In theory yes, but it depends alot on the components in front of the circuit. Did you provide power with a transformer? a 7809 can never pull more load then 1A, so highly unlikely. It's probably more todo with the amount of AC coming out of the wall socket. If the transformer outputs 9VAC at 230V and you only have 225V or less coming out of the wall....

You should set output of LM2596 to 8V to properly let 7805 regulate.

I don't think Benoit is using an STM32 M4 for the RTPMIDI board. However the MIOS32 part is running on that MCU. And yes the code for that is open :wink:

I guess it's this book: Most impressive :thumbsup: . Unfortunately not yet translated by Elektor to any other language. I can read basic french, but this probably has to much topic specific words for me.