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Arduino code
baritonomarchetto:
When the "PC on on power loss" bios option was not available (old days) there was a method we used to authomatically power on a mamecab PC: a small capacitor (1uF IIRW) directly connected to the PC power on button contacts. This emulates a key press during the charging ramp.
Not sure if it's still a viable option with modern motherboards, but could be worth a try
Zebidee:
It is still an option, but there is no need with BIOS options.
I use a similar trick to get stubborn TVs to automatically come on when power is applied, but with a slightly larger cap 10-100uF) to allow the control circuit time to wake up.
lilshawn:
--- Quote from: baritonomarchetto on October 24, 2022, 02:34:01 am ---When the "PC on on power loss" bios option was not available (old days) there was a method we used to authomatically power on a mamecab PC: a small capacitor (1uF IIRW) directly connected to the PC power on button contacts. This emulates a key press during the charging ramp.
Not sure if it's still a viable option with modern motherboards, but could be worth a try
--- End quote ---
this is one of those fabulous intel boards that powers on for a few seconds to... i dunno... test for stuff??? then shuts off before you can boot it. so now the cap is no longer a "switch" cause it's charged.
it's stupid in that way as well.
so it powers on.... then your cap gets filled and then shuts off cause now its ready for your button press.
believe me, if i didnt have to program an arduino to do this, i wouldn't
baritonomarchetto:
Ok, arduino then :)
Did you gave a look at the sketch I suggested as starting point?
nitrogen_widget:
--- Quote from: lilshawn on October 24, 2022, 09:38:21 pm ---
--- Quote from: baritonomarchetto on October 24, 2022, 02:34:01 am ---When the "PC on on power loss" bios option was not available (old days) there was a method we used to authomatically power on a mamecab PC: a small capacitor (1uF IIRW) directly connected to the PC power on button contacts. This emulates a key press during the charging ramp.
Not sure if it's still a viable option with modern motherboards, but could be worth a try
--- End quote ---
this is one of those fabulous intel boards that powers on for a few seconds to... i dunno... test for stuff??? then shuts off before you can boot it. so now the cap is no longer a "switch" cause it's charged.
it's stupid in that way as well.
so it powers on.... then your cap gets filled and then shuts off cause now its ready for your button press.
believe me, if i didnt have to program an arduino to do this, i wouldn't
--- End quote ---
oh, it's one of those boards.
maybe this will help?
https://forum.arduino.cc/t/turn-on-computers-after-power-outage/528546/4
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