Editing Talk:Switch boards
Jump to navigation
Jump to search
The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then publish the changes below to finish undoing the edit.
| Latest revision | Your text | ||
| Line 1: | Line 1: | ||
== PS3 2000 series Power Eject boards, enabling contour leds talk == | |||
This is a temporal section to discuss the simplest/easyer/safest/better way to make this mod, and the posible variations | |||
Is probable that exist a prototype that uses pin1 (or is connected to an intermediary device), is needed to be 100% sure the pin goes nowhere (is posible the trace goes to an internal layer of the motherboard not visible in the surface and emerge again in a syscon pin) | |||
If the pin1 line is really disabled, we can use it to carry other signals from the motherboard, like a temperature sensor, the PWM pulse of the fan, etc... add a small microcontroller in the power eject board with code to controll leds based in temperature (a PIC is a good candidate and there are 5v in the board) or even some kind of small display, etc... | |||
== Pin 1 identification == | == Pin 1 identification == | ||
All components whose pins needs to be marked in electronic equipment (because the component has several pins, like any chip/IC or connectors) always has a mark in pin 1... sometimes this mark is not visible because is "printed" under the component itself (so only visible before soldering the component to the board)... this seems to be the case in some of the connectors in PS3 power/eject boards, so the identification of pin 1 can be confusing | All components whose pins needs to be marked in electronic equipment (because the component has several pins, like any chip/IC or connectors) always has a mark in pin 1... sometimes this mark is not visible because is "printed" under the component itself (so only visible before soldering the component to the board)... this seems to be the case in some of the connectors in PS3 power/eject boards, so the identification of pin 1 can be confusing | ||
As example... HSW-001 board has a "copper point" marked close to the connector... but this point is the ground pin of the capacitor placed below (the | As example... HSW-001 board has a "copper point" marked close to the connector... but this point is the ground pin of the capacitor placed below (the photo is wrong because this point is not related with the connector). So there is no way to identify pin1 by looking at HSW-001 board... the solution is to look at the connector in the other side of the ribbon cable (in other words... in the main motherboard) | ||
<gallery> | <gallery> | ||
File:Power Eject board HSW-001 (Connector pin 1 detail).jpg|The blue text is wrong because this point is not related with the connector but this is actually pin 1 if you look at the motherboard and trace it along the ribbon cable | File:Power Eject board HSW-001 (Connector pin 1 detail).jpg|The blue text is wrong because this point is not related with the connector but this is actually pin 1 if you look at the motherboard and trace it along the ribbon cable | ||
File:Power Eject board HSW-001 (JSD-001) schematic.jpg|But by looking at this photo of the motherboard is visible another point that is actually the pin 1 mark of the connector | File:Power Eject board HSW-001 (JSD-001) schematic.jpg|But by looking at this photo of the motherboard is visible another point that is actually the pin 1 mark of the connector | ||
</gallery> | </gallery> | ||