Thanks Djuri. What about the PCB file? Do you open source it too? 

 Nice one, thx. So it could also be used as dead lghtning node switch. Dead home Server, router, switch too. Or lets call it notification :-)  

 Yes, please. Can I use a adress of core lightning. Did you try that?
 

 Strange. So actually the lightning devs need to implement testnet4 before?
 

 Yeah, why not. I will generate a new address  with core lightning, and send it to you. Would be cool to test that. Just send a tiny amount for the first try. I will send you an address in maybe 3-4h. Hopefully this works! 

 tb1qr49xg7jythtp8qdsnmu434p2lh0jq6aa26qut6

It s a sparrow wallet. I did not manage to connect core lightning to bitcoin testnet4. Althought i changed the rpc port.

Do you have a lightning node on testnet4 running? 
 

 It is never to late. If you like computers and libux. Check out the 402 payment required video about seting up a secure fullnode. 90% is still valid. 

 I did not receive anything. I conected to public server to be sure it works 

 Basically Shitcoin on Bitcoin. This rollup stuff might bring us all Ethereum Shitcoins to Bitcoin. This could indeed be the next big hype. 

Somehow good for Bitcoin, as it will once more everywhere be talked about. But somehow bad because this are Shitcoins and after the buble one might think it is Bitcoins mistake.

We will see. Personaly I am very pessimistic to this development. But open to be convinced for better. Bizcoin really needs privacy. 

 Yeah, but it matches the general EU politics perfectly.