The Solo Mining Co'

Description

Bitaxe LonelyFan fan splitter

The Bitaxe LonelyFan fan splitter is a sleek black-PCB Y-splitter that lets your Bitaxe drive two 4-pin PWM fans from a single header. Purpose-built and designed by I Am GPIO, it keeps your build tidy while preserving speed feedback on one fan: the left-side connector reports RPM.

Highlights

• Black PCB – clean, pro finish that matches premium builds.
• Two fans, one header – rigid PCB Y-split for reliable, compact routing.
• RPM feedback preserved – left output = tach/RPM passthrough.
• True 4-pin PWM pass-through – Power, Ground, PWM, Tach correctly mapped.
• Miner-ready – robust traces and components for 24/7 operation.

How to install the Bitaxe LonelyFan fan splitter

1. Power off your Bitaxe.
2. Plug the splitter into the Bitaxe 4-pin fan header.
3. Connect the fan you want monitored to the left output (RPM reported).
4. Connect the second fan to the right output.
5. Power on and confirm RPM is detected for the left fan in your stats.

Notes

When you’re running higher-power or push–pull cooling on a Bitaxe, the
LonelyFan fan splitter keeps wiring clean while preserving a single
stable RPM reading.

Shared control: both fans receive the same PWM signal; only the left fan returns RPM.

For best results, use matching fans (same model/speed).

FAQ

Will both fans report RPM on the Bitaxe LonelyFan fan splitter?

No – only the left port passes tach/RPM back to the Bitaxe to keep readings stable.

Can I mix different fans?

You can, but matching fans usually give better acoustics and more predictable control.

Does this increase fan power?

No. It splits one header; it doesn’t boost power. Make sure your combined fan draw stays within the header’s current limit.

Why use this splitter?

If you’re pushing your Bitaxe harder with bigger heatsinks, rear coolers or a push–pull setup, the
LonelyFan splitter keeps everything neat while letting both fans follow the same PWM curve. It’s ideal alongside other cooling upgrades in the
Bitaxe accessories range, where airflow and wiring can quickly get busy.

For anyone who doesn’t know what PWM means or how PWM and RPM feedback work, this overview of 4-pin PWM fan headers is a useful primer. It’s written from a PC-cooling perspective (so not directly about bitcoin mining), but it clearly explains why keeping one clean RPM signal and a shared PWM control line – like on this splitter – is the preferred way to manage multiple fans from a single header.

Altogether, this makes the LonelyFan fan splitter a simple but essential accessory for clean, reliable Bitaxe cooling setups.