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cheapy 'Zero Delay' USB encoder
PL1:
Thanks for the assist, Melvinbates. ;D
If the ZD is an active high device, it would explain why things aren't working as expected.
Scott
melvinbates:
Well, I had a chance to check my own ZD and get some readings. It seems that the way you had it hooked up originally should have worked. The large back plane on the pcb is in fact the +5 and not the ground (Odd to say the least).
EDIT:
Well or at least close to the way you had it hooked up. i would try just hooking up the pulse wire to the black wire with the mech set to NO and if you want the ground from the usb connector to the ground of your mech, leave the red wire unhooked, it's just +5v. the black is the one that runs to the chip on the board. I think that should get it working for you.
PL1:
--- Quote from: melvinbates on February 24, 2014, 04:56:27 pm ---Well, I had a chance to check my own ZD and get some readings. It seems that the way you had it hooked up originally should have worked. The large back plane on the pcb is in fact the +5 and not the ground (Odd to say the least).
EDIT:
Well or at least close to the way you had it hooked up. i would try just hooking up the pulse wire to the black wire with the mech set to NO and if you want the ground from the usb connector to the ground of your mech, leave the red wire unhooked, it's just +5v. the black is the one that runs to the chip on the board. I think that should get it working for you.
--- End quote ---
Will the Zener diode cause problems with this configuration?
Scott
melvinbates:
I don't think the zenner will cause any problems if it's put on there correctly should just keep the voltage on the pulse <=5v. I think the main problem he was running into was having the pulse on the wrong wire and feeding the 5v line into the pulse line was probably keeping the USB from initializing by sinking too much power. Just conjecture but it makes sense to me.
InfantSorrow:
--- Quote from: melvinbates on February 24, 2014, 04:56:27 pm ---Well, I had a chance to check my own ZD and get some readings. It seems that the way you had it hooked up originally should have worked. The large back plane on the pcb is in fact the +5 and not the ground (Odd to say the least).
EDIT:
Well or at least close to the way you had it hooked up. i would try just hooking up the pulse wire to the black wire with the mech set to NO and if you want the ground from the usb connector to the ground of your mech, leave the red wire unhooked, it's just +5v. the black is the one that runs to the chip on the board. I think that should get it working for you.
--- End quote ---
Gentlemen... just about to test this.
Drum roll please...
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