russian wrote:where to get an SD module compatible with 'ST-TF-003A'.
So I was really going to give up on this module and I have started looking for some easy-to-solder replacement, only to realize that this module has other names - http://www.dipmicro.com/store/CON-MICROSD1 sells it as tfwf1-ebxx-1x0x and eBay sells it as TransFlash TF Micro SD Socket
We made some progress:
1) all footprints were right
2) SD card works (but it is a little bit unrealizable, not sure if the issue is with the card or the fact that I do not have a 4.7nF capacitor)
3) an issue: we've got the USB pinout upside down
4) another issue: even with the hacked USB wiring, the chip is recognized as 'Unknown device'. I have no idea if that's a result of the lame wiring or if I need to initialize the FT232 chip with some default firmware to get it recognized by Windows or if that's an issue with my Windows instance
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PS: the green wire on the picture is soldered to the signal side of C353 on the schematic.
Guys, can you please research this? Do I need to initialize the FT232 chip? If not, why does it not ask for a driver? Is it because of the lame wiring on the previous picture?
Sure thing it needs a driver. My problem is that Windows does not recognize it as 'TTL232R' - it recognizes it as 'Unknown device' and it does not want any drivers! Now my question is why would windows have any USB layer issues with this chip - could it be the wiring, could it be what?
I think "reset" pin 19 is buggered, See reference found here http://puma.freeems.org/docs/Puma_spin1_schematic.pdf on page 15. I know that circuit worked, and there aren't many differeences. The cable and the 47pF are differences, but I don't expect them to be that significant.
Reset pin was not the problem - wiring was the problem. It was not simply flipped, it was totally messed up - so, I've swapped the data wires one more time and this got the module up&running! Oh, and the RX/TX pinout on the connector was wrong, too. So, while rev 0.2 is workable, I would not call our biggest success so far
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Current version of the module is know to work right away. Frankenstein communication module is same as this small PCB and again, it is expected to work as is.
