Nerdaxe Gamma setup: step by step to your first share

Join the open Wi-Fi Nerdaxe_XXXX. The dashboard opens by itself, otherwise open http://192.168.4.1.

Under Settings, in “WiFi Settings”, enter hostname, Wi-Fi name and password.

In “Stratum Settings”, primary pool tab: stratum host stratum.bitaxe.de, port 3333, username your Bitcoin address, password x.

Save, then Restart. Open the IP address from the display in your browser.

Set the fan controller to “Auto Fan Control (PID)” at 60 °C, save, check hashrate and temperatures in the dashboard.

Open the Wi-Fi settings on your phone or laptop and pick the open network Nerdaxe_XXXX with the four characters from the display. No password is needed.

After a few seconds the captive portal opens the NerdOS dashboard. Unlike on the Bitaxe there is no separate setup page; you set everything in the normal settings. If nothing opens, go to http://192.168.4.1 in the browser.

Open Settings in the menu. The “Language / Langue” card at the very bottom switches the interface language; your browser remembers the choice.

In the WiFi Settings card enter a Hostname, for example nerdaxe. You will later also reach the miner as http://nerdaxe.local. Devices with OSM-OS show OSM-Miner there by default.

Enter the name of your Wi-Fi under WiFi Network (SSID) or search with the magnifier, and the password under WiFi Password. Mind upper and lower case.

Do not save yet; enter the pool first (next chapter). That way you only need one restart.

In the Stratum Settings card the pool mode stays on “Failover (Primary/Fallback)”. The “Primary Stratum Pool” tab is open.

Leave Stratum Protocol on “Stratum V1”. Under Stratum Host enter stratum.bitaxe.de, without stratum+tcp:// and without a port; the interface itself points this out.

Stratum Port: 3333.

The Username field contains a foreign address out of the box. Delete it completely and enter your own Bitcoin address. Optionally append a device name after a dot, for example bc1q…your-address.nerdaxe.

Password: x. Leave the boxes “Encrypted connection (TLS)”, “Enable Extranonce Subscribe” and “Coinbase Verification” unticked.

The “Fallback Stratum Pool” tab is empty out of the box. You can enter a second pool there that steps in when the first cannot be reached; it is not required.

Scroll down, click Save and then Restart. The miner restarts, joins your Wi-Fi and shows its IP address at the top of the display, for example 192.168.20.136.

The Hash Rate should be close to the “expected” value. With the original firmware the Nerdaxe Gamma runs at 515 MHz out of the box, about 1,050 GH/s. OSM-OS sets 650 MHz out of the box, about 1,326 GH/s. Short fluctuations are normal.

In the pool card the Shares keep rising and “Rejected” stays well below one percent. The card also shows the host stratum.bitaxe.de:3333 and the ping to the pool.

The input voltage is close to 5 V and the power usage around 15 to 20 W depending on the clock. On the Nerdaxe Gamma this value is calculated from the voltage regulator plus a 5 W allowance, not measured at the wall.

The temperatures of chip (“ASIC Temp”) and voltage regulator and the fan speed are on the right. If the chip stays below 65 °C, everything is fine.

In the Fan Controller card, ASICs section, choose “Auto Fan Control (PID)”.

Enter 60 °C as Target Temp. The controller then holds the chip at that temperature and only spins the fan up as far as needed.

Shutdown Temperature is 70 °C out of the box. If the chip reaches it, NerdOS switches it off, sets the fan to 100 % and shows “MINER OVERHEATED”; the miner then needs a restart. Do not raise this value.

Keep “PID uses highest of ASIC and VReg temperature” ticked so the control also takes the voltage regulator into account. Save, done; fan settings do not need a restart.