Getting ready to install a low-profile fan and large heat sink in my DGT Pi, so I identified the GPIO connections just in case I need to reconnect one of them. Raspberry is a 3b+ but connections are the same for a 3b model.
Red = 1; Blue = 3; White = 5; Black = 9; Green = 12; Yellow = 35
Fan uses GPIO Red = 4 (5v) and Black = 6 (gnd).
Note: I had to remove the existing heat sinks. Using dental floss (to "saw" through the paste) made it easy. Clean remaining residue with Q-tip and alcohol.
Six screws need removed from the underside of the Pi to disassemble. All locations visible in first image.
The bottom line after installing the fan - The fan produces a lot of airflow at the cost of a constant hum. Probably typical for a 5-volt fan, but it's always there. I wish it would throttle. I played a match against the Rodent 4 bot and the CPU temperature never exceeded 43.5 C (110 F). The CPU would not be uncomfortable to touch.
The DGT Pi has a 3b+ Raspberry, a fan, and is running version 3 of Picochess. Certainly no longer "stock".
I like to try a 3.3-volt fan, but the DGT Pi is already using GPIO 1, so that's not an option.
The only issue I ran into with this upgrade was popping that black ground wire loose and having to re-solder it :-}
Here's a video with the fan running in the DGT PiFan
Bottom Line - With fan: 43.5 C; with heat sinks only: 53 C
Is it worth the constant drone of the fan? I think not...
Getting ready to install a low-profile fan and large heat sink in my DGT Pi, so I identified the GPIO connections just in case I need to reconnect one of them. Raspberry is a 3b+ but connections are the same for a 3b model.
Red = 1; Blue = 3; White = 5; Black = 9; Green = 12; Yellow = 35
Fan uses GPIO Red = 4 (5v) and Black = 6 (gnd).
Note: I had to remove the existing heat sinks. Using dental floss (to "saw" through the paste) made it easy. Clean remaining residue with Q-tip and alcohol.
Six screws need removed from the underside of the Pi to disassemble. All locations visible in first image.
The bottom line after installing the fan - The fan produces a lot of airflow at the cost of a constant hum. Probably typical for a 5-volt fan, but it's always there. I wish it would throttle. I played a match against the Rodent 4 bot and the CPU temperature never exceeded 43.5 C (110 F). The CPU would not be uncomfortable to touch.
The DGT Pi has a 3b+ Raspberry, a fan, and is running version 3 of Picochess. Certainly no longer "stock".
I like to try a 3.3-volt fan, but the DGT Pi is already using GPIO 1, so that's not an option.
The only issue I ran into with this upgrade was popping that black ground wire loose and having to re-solder it :-}
Here's a video with the fan running in the DGT Pi Fan
Bottom Line - With fan: 43.5 C; with heat sinks only: 53 C
Is it worth the constant drone of the fan? I think not...