Unable to disable Wide Input SHIM

Hi there,

The Wide Input SHIM has an Enable input, which disables the supply output when held low. I can’t get this to work. I’m driving the Enable input from a Or gate (27HC32) but when the output of the gate is 0v (well, 0.02v), I still see a supply voltage on pin 2 of the Pi interface. The Pi isn’t yet attached, would that affect it? Power to the board is coming in via the barrel connector. I’ve also tried disconnecting the gate, and directly connecting the Enable to the adjacent +, then - pad. when held on the - pad, the pin 2 voltage also does not drop.

Any idea what I’m doing wrong, here?


Found it all worked, once I put a load on.

Thanks for posting the solution. This one had me scratching my head?