Below are my experience setting up Antminer L3+ from Bitmain and using Nicehash mining pool to earn some bitcoin. There are some steps that you need to pay attention especially the troubleshooting.
Delivery time, very important
I pre order antminer L3+ from local vendor in Indonesia. We do that because we only need to pay down payment, if we order via Bitmain, although much cheaper, we need to pay all in advance using Bitcoin or Litecoin.
Earning estimation Antminer L3+ at that time is about 0.3 BTC or about $1500 per month.
When I received antminer 2 months later the earning has dropped about 0.1 BTC or about $600 per month although the bitcoin price has increase to about $6300.
When you receive the antminer, there only 1 piece of paper and the main unit. I also bought the power supply APW3++, this power supply able to power up to 2 units Antminer L3++.
First, no power button. You just need to plug the cable power to turn on. If you follow the instruction from the paper, you will ask to power up controller only after the hash board on. But this is not practical. I recommend Bitmain to put power switch to make us easier to user.
After power up normally about 1-2 minutes later you will hear the fan start spinning at their full power i think, because it too loud. But in my case I am not hard any noise the fan spin very smoothly.
Cannot get IP from DHCP server
I have this problem when turn on the machine several times, although already connected to the network that has DHCP server, the antminer still cannot get IP address. The indicator is when L3+ cannot get IP address:
1. Fan very quit from the beginning although it spin. You will need to restart it.
2. The other is the fan sometimes very loud then back to normal, then back again very loud spin into its maximum speed. it will doing this over and over.
Reset Antminer L3+
I finally got IP address from DHCP server by resetting the Antminer (press and hold reset button until you hear beep). After get IP address I login to the antminer console using Internet browser.
Default username is root and the password also root
You will need to change your pool setting in Miner Configuration tab, below is my setting when using Nicehash pool:
As our miner located in Indonesia, I choose the first pool location in Hongkong, second pool is in Japan, and the third pool is in Europe. Choose your first pool as close as possible with your miner current location.
If pool 1 down, the miner will choose the next available pool, so it is very important to fill all the pool details.
Checking the miner health:
You can check miner health on miner status tab. The most important is to keep your chip temperature low, the normal range is 40-70 degree Celcius. On our status below 55-59 Celcius which is good. On ASIC status, you see 0000… as many as 288 chips. If you see xx among them, that indicate broken/fail chip, which is not good.
Overclocking the miner will make warranty void, however by overclocking will increase earning because hash rate getting higher but also increase power consumption and heat. Do not overclock if you want to keep warranty.
Make sure you change IP address to static for several reasons, but the most important is for stability and miner’s health. When we still using dynamic IP address our miner stop mining just because temporary internet downtime. At that time we also cannot login to console so we need to hard reset the miner again to make it normal.
However, after we changed to static IP address whenever there is internet downtime, the miner will back mining after internet back online.
When there is something wrong with the miner, usually the fan rotate at full speed all the time, about 6000 rpm and this is very loud, you will still hear the noise with the door closed. As our experience acceptable noise generated by miner’s fan is up to 3600 rpm.
It is very important to always monitor your miner condition. When you see workers become 0 or efficiency less than 100% most of the time in Nicehash console, you need to check your miner by logging into their software status and check physically if still have a problem.
How much we earned so far?
With overclock we earned about 0.025 BTC per week or about $160.