@rob
Relays (3)
- wss://relay.nostr.band/ – read & write
- wss://nos.lol/ – read & write
- wss://relay.damus.io/ – read & write
Recent Notes
Live on Bitcoin without giving up sovereignty
Spend directly from your savings.
Keep full control.
No compromises.
Bitcoin → Euros → Bank in seconds
Bank → Euros → Bitcoin in seconds
Lightning...
Question: what possibilities do you have with the vIBAN?
- Can other people deposit to it?
- Can it be used to pay a bill for example?
Or is it only meant as a gateway to transfer funds to / from a commercial bank account?
- Can other people deposit to it?
- Can it be used to pay a bill for example?
Or is it only meant as a gateway to transfer funds to / from a commercial bank account?
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What to do with mining residual heat #241: de-ice your kitchen freezer 
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This week I met a guy working for an energy research institute. He told me the wind energy department had to let 20% of the people go because they had to cut costs and this particular department was not profitable enough anymore. The industry is mature and has taken over.
Then I suggested that they could be focusing on enhancing the profitability of renewable energy sources by operating mining equipment in tandem, to stabalize the grid and as a buyer of last resort.
I think I made his day because he was literally laughing out loud.
We are still early so it seems. In this tempo it will cost Europe years to catch up when they get it finally.
Then I suggested that they could be focusing on enhancing the profitability of renewable energy sources by operating mining equipment in tandem, to stabalize the grid and as a buyer of last resort.
I think I made his day because he was literally laughing out loud.
We are still early so it seems. In this tempo it will cost Europe years to catch up when they get it finally.
Sounds like NZ prices! Will be interested in any results. I’ve on and off thought about this, but mainly come to the conclusion that you are better with a heat pump or wood fire and use the solar s...
If you do it purely for profit home mining is not an option, unless you have access to real cheop energy (<$0.0.6 or so). You also have to invest in equipment and who knows how much it will generate per kWh within one or two years? Could be more if btc price appreciates, but also could be less if increase in hasrate outpaces that.
But building something like this is definitely a lot of fun and you learn a lot of it.
But building something like this is definitely a lot of fun and you learn a lot of it.
Let's share the results of my home miner project of this winter.
I was wondering if I could package a S19J Pro miner into a usefull piece of furniture. It became a mobile sidetable with a miner inside.
Because it is a prototype i created enough room for electronics. This can be much more compact, but since I didn't know upfront what I needed I made it flexible.
An esp32 is used for reading temp and humidity in the room, as well as the start / stop button, which state it sends to Domoticz.
The esp32 also controls the fans through pwm. That way we don't have to suffer from the noise when the miner boots. It makes it also easy to make it run efficiently when nobody is around, by incrceasing the fan speed. A timer in Domoticz starts the miner in the morning with a high fan setpoint, and switches to a lower fan speed when the first person in the house wakes up.
It has a 230V socket for a laptop for example, and a USB port for charging a phone. The miner is fully remote controlled through Domoticz but also has a local on / off button for convenience. It features a 5m power cable for increased mobility.
Various values are sent to Influxdb and shown in a dashboard.
One of which is the BTC cost price, which is on average 3M/BTC.
So not really profitable yet, but the costs are offset by a slight reduction in heating costs and a huge increase in comfort. The house is heated through floor heating which is quit slow, the miner can quickly heat up the room when requested.
I was wondering if I could package a S19J Pro miner into a usefull piece of furniture. It became a mobile sidetable with a miner inside.
Because it is a prototype i created enough room for electronics. This can be much more compact, but since I didn't know upfront what I needed I made it flexible.
An esp32 is used for reading temp and humidity in the room, as well as the start / stop button, which state it sends to Domoticz.
The esp32 also controls the fans through pwm. That way we don't have to suffer from the noise when the miner boots. It makes it also easy to make it run efficiently when nobody is around, by incrceasing the fan speed. A timer in Domoticz starts the miner in the morning with a high fan setpoint, and switches to a lower fan speed when the first person in the house wakes up.
It has a 230V socket for a laptop for example, and a USB port for charging a phone. The miner is fully remote controlled through Domoticz but also has a local on / off button for convenience. It features a 5m power cable for increased mobility.
Various values are sent to Influxdb and shown in a dashboard.
One of which is the BTC cost price, which is on average 3M/BTC.
So not really profitable yet, but the costs are offset by a slight reduction in heating costs and a huge increase in comfort. The house is heated through floor heating which is quit slow, the miner can quickly heat up the room when requested.
Re: home mining, has anyone come across a good solution for 1-3 KW of mining/heating?
Setup is an oversized solar array, producing excess electricity (about $800 stored up)
The local grid pays 0.18...
What do you want to use the heat for? With some modifications an old(er) S19J (Pro) can be turned into a quiet livingroom miner. My setup delivers around $0.08 / kWh.
With some more effort, you can embed it into a mobile sidetabel like this one:
With some more effort, you can embed it into a mobile sidetabel like this one:
https://m.primal.net/MfMG.png
https://m.primal.net/MfMI.png
Hey, thanks alot for this idea!
I made a rapid - rapid prototype of wood and carboard to test this and it works wonderfully.
I haven't measured the sound level yet, but it is now at a level that the high frequency noise from the power supply fans are getting more annoying, with chip temperature at around 90 deg Celcius.
Have you considered turning around one of the boards so that the heatsinks both face inwards? I see a 10% higher temperature on the board with the heatsink facing outwards.
I made a rapid - rapid prototype of wood and carboard to test this and it works wonderfully.
I haven't measured the sound level yet, but it is now at a level that the high frequency noise from the power supply fans are getting more annoying, with chip temperature at around 90 deg Celcius.
Have you considered turning around one of the boards so that the heatsinks both face inwards? I see a 10% higher temperature on the board with the heatsink facing outwards.
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