Hi again ! I’ve got the new pair of RC4 core module pcb’s : Great for SmashTV . . this design seems to be more versatile and bug free than the latests. I’ve got a small prob. Everything is well mounted as I did with taken all the care required for the situation, but now I’m getting 2.5V instead of the normal 5V required when realizing a Vdd measure from the MIDI troubleshooting. Can you tell me why it happens ? Maybe I’m missing new instructions for these new cores ? I see here that I get exactly the half of 5V where I have to get the whole 5V.
A think to say : If I connect ground from the PSU to the core power SIL header, it gives me the 5.20V. I think is after the entrance of the power that gets lowered. But . . . I checked and everything is ok, I think it’s my best solder since I started. Thanks again . .
Hi again . . I mounted the second core I have with even more care and I get the same results. I’m getting a bit desperate here. Some help would be much appreciated. Thanks.
Hi ! I have mounted my new core modules and, when I measure the critical points with the multimeter I get 4.60V instead of the 5.20V that should normally give back. I’m using the optimized PSU, so the Voltage regulator is removed and the pins are shortened correctly too. The PSU is right, as it gives the right voltages when measurinn it and even when measuring the J1 ( power pins ). The board has no soldering errors as I double checked and everything seems to be fine. Can somebody give me a hand with this ? Thanks.
Thanks for your reply but I must say that I tryed to sync the core to my PC with the MIOS STUDIO and It does not work. I get no response from the core. If I measure the the J1 power pin, It gives the right voltage. Seems that after the power connector it looses somewhere. As I get no response from core when I try with the MIOS STD., I think that the won’t be that issue with the multimeter. Thank you, and help is much appreciated. :-\
Just to ensure (I’m not sure if there is a misunderstanding of the circuit, or something else…): which voltage do you measure at J1 of the core module?
Thanks T. I’m feeling like an idiot . . . I didn’t remember that the right connector with the optimized PSU was the J2. Now I get the right 5.20V everywhere it should. Now the bad news : I did already all the MIDI troubleshooting, even the loopback with the IN/OUT ports of my PC and I can’t get a sign of the PIC. Maybe It’s dead ? Thanks again.
My gameport is working properly and my MIOS ST. config is the following :
PIC and the optocoupler are on the right place too. As everything is working, what can happen ? I’ve got the LCD ready to assemble. It wold be better to mount it for a better debugging ? Thank you.
I’m here once again, I can’t mount the LCD yet. I don’t have any ICD connectors so I’m waiting for a new smashTV order. I tested the second new core, and the same happens ! Does that give you any sense of what is happening ?
I think isn’t the interconnection . . . It’s a R4C core and I’m using the PCB mounted MIDI jacks
I’m doing PC Out to MIDI IN and viceversa and the software port config is good.
One more question. On the R4C you have the option to assemble the PCB with standard to-SIL jacks or the PCB mounted included. Do I have to solder the rest of the pins remaining reserved for the SIL connections. Just for ask. Thanks.
