MicroPython Forum (Archive)

I got it directly from AD, so I doubt it's a knock-off. I had 2 chips, both performed the same, but I burnt out one of them (and a pyboard at the same time) by mis-connecting the 12v power supply. I agree, it seems incredible that AD would sell an expensive chip like this ($20/each) for 20 years wit...

@pythoncoder: Thanks for the tip. I have stopped using the multimeter and instead inject a 500Hz sine wave on one of the pins and have an oscilloscope connected to the other. The signal generator and scope share the analog ground from the analog power supply. In the meantime, I have done extensive t...

Thanks, but no bad connection... sigh

Thanks!

I have added diodes to the cirucuit as suggested in the data sheet. I used 1N4004 diodes instead of 1N4001 or 1N5818 as suggested, no change. I also tired BAT46 diodes, but no change either...

I am really at a loss..

Thanks for the help in any case!
B

@pythoncoder Yes, all the timing requirements are met and I have measured on the scope. I've continued to test this, now using a signal generator and the behaviors is exactly as I said: With analog supplies +/-7.6v normal correct behavior With analog supplies +/- 9v or +/- 11.35v or +/-12v, once som...

Thanks for that reminder, and I do pulse the PCLK to zero then back to one....

Any other ideas are of course welcome!
Cheers,
Bob

HI guys! I am trying desperately to get the AD75019 analog crosspoint switch to respond to bit vectors sent via SPI from a Pyboard but for the life of me I can not get it to do anything it should. The datasheet is here: http://www.analog.com/media/en/technical-documentation/data-sheets/AD75019.pdf M...

Hi guys!

Any news on this? I'm waiting for it to come to the pyboard, as I just spent weeks debugging problems which would not have occurred if I had working threads...

Ciao,
Bob

@pythoncoder I can tell you the story of my all metal Asus UX303LN laptop. It is a very high end machine and very sweet. Except that the all metal housing gathers static electricity in huge quantities. So much so that I cannot put my hands on it while typing. I spoke to Asus about this and researche...

@chrismas9 Thank you so much for all the work you did in trying to help me!!! I still can't imagine that you could even find my board design, let alone study it carefully and comment it! And your post is a FANTASTIC reference that I will keep separately, like Dave said! I did the tests as you sugges...