(2 Reviews)
Write a Review (requires login)
The pinout has changed from GVD to GDV, now labeled, one larger mounting hole above header pins, unpopulated J2 has (4) through holes, J3 (2).
ALL ELECTRONICS REPLY: Thanks - we've updated the picture to the current version going out as of 2-22-18.
I'm using obsolete Parallax (SX-28) microcontrollers (but I assume they're all about the same)...
--- these were tricky. I kept getting no response except for the reset. Finally I set up some LED's and just observed (sampled EVERY TWO micro-seconds) so that I could see the unit's responses --- it was faster than I had ever expected: my program had been too slow. I then programmed my "sampling" right into the middle of those observed responses - and the units work really well...
--- also, they usually take another reset for a another function to be performed...
--- I could query each unit's serial number, (and write it down) so I didn't have to bother with the CRC; instead, I just ignore (try, try, again) any response that is not approximately what I was expecting.
--- "everything" is inside the simple, 3-lead chip -- so I will use the cheaper single chip -- I do not know the benefits of the same chip mounted on a card for an extra $4.
