2021 Jun 25, 06:57 PM
(This post was last modified: 2021 Jun 25, 07:14 PM by HereComesTheRain.)
(2021 Jun 25, 04:27 PM)astrogerard Wrote: @Rob,
Lets do a little experiment.
In the picture in from the Wiki there is a purple wire connected to pin 13 on all the hc595
Can you pull that wire from the Pi and connect this wire to GND? And test again?
Pin 13 of the HC595 is inverted OE (Output Enable). According to the datasheet, if this pin is high the output of the HC595 goes in "high impedance" mode which essentially means it neither high or low.
I have unfortunately no spare HC595 to test so everything I suggest is based on theory.
--Gerard
Hi Gerard.
Pulled the purple wire from the Pi that was connected to pin 13 and put in the top rail ground. Unplugged and plugged the fan from the outlet and the same results but more pronounced. All optocoupler LEDs were energized.
Pulled the wires going from the BOTTOM RAIL to the GND and JD-VCC on the RELAY MODULES.
Have not yet removed the GND wire from the TOP RAIL to the BOTTOM RAIL nor the short blue wires going from the SHIFT REGISTER GND to the BOTTOM RAIL GND.
Shall I go ahead, like you have been telling me to, and remove those GND wires and run the test again? Did not want to change too many things at once and not know what solves the problem.
What should I order 47uF 16V, 25V or 50V?
I have a pack of 0.1uF capacitors and a pack of 10k Ohm Resistors. Anything else I should order?
Thanks again for your time and assistance.
(2021 Jun 25, 01:26 PM)dan Wrote: A shutdown button has been considered but not added for the reason Gerard mentioned. If SIP is killed from a remote location there would be no way to restart.
Dan
Yes a shutdown button would be great. For those whose SIP/Pi device is located outside it could be a great time saver not having to trek "over the hill and thru the woods" just to power off the SIP/Pi.
You could display a popup confirming they are about to turn off their Pi, while you are at it you could display a second popup.
If people have remote access to their SIP/Pi they most likely have remote access to their network and could easily access a smart plug. (~$5.00 U.S. on a not to be named online retailer.)
If they accidentally shutdown their SIP/Pi they could remotely power off and power on the smart plug rebooting the SIP/Pi in the process.
I look forward to the feature. Nudge Nudge.
Keep up the good work.