Re: GPIO pin control, simple applet exists?
|
The relay I use needs not just a gpio pin, but also 5v power to function. So the pi can cut its power, but it cannot turn it on (I'm going to use a separate esp module and relay to do that in my project).
That board seems to have everything exposed, can you not just bypass/jumper the switch so it is always closed?
So right now the pi won't turn on if the 12V plug is energized (no
power --> power) like if you were using the 5V port on the actual Pi
board.? You have to use the button or a IR remote.? I was wondering if
your GPIO endeavors were able to find a solution to this.
On 6/3/20, Randon Loeb <randonloeb18@...> wrote:
> What exactly are you trying to accomplish and what do you mean by "hot
> plug?"
>
> On Wed, Jun 3, 2020 at 1:26 PM Grant Greenwell
> <grant.d.greenwell@...>
> wrote:
>
>>
>>
>>
>>
>>
>> On 6/3/20, Randon Loeb <randonloeb18@...> wrote:
>> > I'm not familiar with that hat (in full disclosure, more a
>> microcontroller
>> > guy than rpi).
>> >
>> > What does it do, or where are its specs online?
>> >
>> > On Wed, Jun 3, 2020 at 10:16 AM Grant Greenwell
>> > <grant.d.greenwell@...>
>> > wrote:
>> >
>> >> That sounds amazing - would it enable "hot plug" for the 12V makerpi
>> >> hat as well I presume?
>> >>
>> >> On 6/3/20, Randon Loeb <randonloeb18@...> wrote:
>> >> > Well to answer my own question, the raspbian OS comes with command
>> line
>> >> > "gpio" utility that is pretty cool, except for some weird pin
>> >> > mapping
>> >> > convention.
>> >> >
>> >> > Was able to easily use webmin (great admin tool I put on every linux
>> >> > machine) to add simple startup and shutdown script so now the pi can
>> >> > control the relay that controls its own 2x12v 40mm fans I put on for
>> >> > cooling (going to use this outside or in a hot vehicle in florida
>> >> > for
>> >> > remote rig control).
>> >> >
>> >> >
>> >> >
>> >> >
>> >>
>> >>
>> >> --
>> >> G.D. Greenwell
>> >> C: +1.240.472.3941
>> >> grant.d.greenwell@...
>> >>
>> >>
>> >>
>> >>
>> >
>> >
>> >
>> >
>>
>>
>> --
>> G.D. Greenwell
>> C: +1.240.472.3941
>> grant.d.greenwell@...
>>
>>
>>
>>
>
>
>
>
--
G.D. Greenwell
C: +1.240.472.3941
grant.d.greenwell@...
|
