Have long wanted to try Bitcoin mining using surplus solar I have from living offgrid. But previously mining rigs were either too big to use on my 1600watt PV/ 2.4kw/h LiPo4 battery solar system, or were too small to use any significant amount of surplus solar electricity. The solar system I have is designed to be just big enough power lights fridge freezer and laptops/tv all year round with very occasional need to use generator mid winter, if it rains for more than several days. Most of the year however there are daily surpluses of electricity which just gets wasted as the controller dumps the surplus power once battery is full...so a small solar miner rig that can use some of that surplus has always been a plan. Recently saw the Lucky Miner LV07 which has a hashrate of about 1 Tb/s and a power consumption of 25-30 watts. The solar system can handle a constant 30 watt draw (except maybe the midwinter) so I ordered one and now have it running. Although the chances of earning much are low its been an interesting experience to learn how to connect the rig up to a mining pool and adjust its settings. Its not that difficult to set up -and I'm far from expert in tech. So if you have always wanted to try Bitcoin mining on a small scale, especially using surplus solar power it is now viable. USD$120 for the miner now creates a (slim) chance of winning 3.25BTC every ten minutes!