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Bitaxe Gamma upgrade cooling
This page provides information about improving the cooling system of the Bitaxe Gamma 601 solo miner in the style of classic ASICs (such as the Antminer S9).
Advantages of this form factor
1. Cools the bottom part of the PCB (voltage controller)
2. Multiple devices can be stacked on top of each other
3. Protection of the Bitaxe PCB
4. Lower noise level (depends on overclocking). With 10V supplied to the fans (chip temperature averaging 51°C), the Bitaxe operates at 1.54Th
List of materials
1. 3d Printer
2. FAN 80MM 12V (5V optional) x2
3. MT3608 DC-DC stepUp module (optional, if 12V fans)
3. M3 8mm screw x12
4. 4-core wire 10cm and 2-core wire 20cm, 2 sockets 2.54mm
5. 20x20mm 0.5mm copper plate (optional). 35x35mm will be better, if you can find it
Let's go!
1. Download and print this STL model
- no supports, good for PLA
- layer height 0.22mm
- line width 0.6mm
2. Desolder the OLED and solder a 4-wire cable. Solder a 4-pin connector to the cable for connecting the OLED display. This is the most difficult step for a beginner. I use a soldering iron with a wide tip to heat all 4 contacts at once. Additionally, I used double-sided tape to attach the screen to the case.
3. Supply 5V to the input of the MT3608 and, using a multimeter and the adjustment resistor, set 12V at the output. You can later lower the voltage to reduce noise levels (depends on the Bitaxe chip overclock). Solder 2 fans to the output of the MT3608 and a wire with a 2-pin connector to the input.
4. Install the Bitaxe Gamma into the case using 4 screws. Optionally, for better cooling, use a copper plate (under the default heatsink). I also suggest slightly bending the heatsink fins.
5. Connect the screen and fan power connectors.
Important: do not reverse the polarity when connecting to the Bitaxe connector! MT3608 has no protection, it will immediately smoke — trust me :)
6. Mount the fans to the case — and you’re good to go!
This is my silent overclock settings. As you can see, the temperatures stay around 50 degrees (chip and voltage regulator).
Next, I plan to fit 2 Bitaxe Gamma units into a single case of the same size. This will be possible if the project gains interest from the community and there are donations to purchase a second unit for testing ;)
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