How To Build A Bitcoin Miner From Scratch CryptoCoins ...

To arms Bitcoin community! Help us to complete this mining installation for the Zürich MoneyMuseum. We are not asking for funds. Only your expertise needed! 20$ tip if you give us the relevant clue to solve or mitigate our main problem. Nice pictures of the exhibition inside as well…

Edit:
A big thank you to all people who helped us we can now mine true pps with diff1! The people in this thread which have helped most have been awarded. I want to mention also the operator of btcmp.com denis2342 and Luke-Jr.
Actually looking at the miner screen in the Linux terminal helped a lot ;-). The pool constantly resigned to stratum with variable difficulty. We can now mine true pps with diff1. Getwork with long polling seems to be default after disabling stratum...
We will probably post again, when there is a video of the installation in action...
Again many thanks. Learned a lot.
Edit: Thank you for all the answeres so far! We will try different things now and report back. Tip bounty will be distrubuted as soon as we found out what finally does the trick. Ths could take a few days. The offerd tip will be distributed and very likeley a few others as well.
First of all, let me tell you that the Bitcoin Exhibition at the Zürich MoneyMuseum is most likely the biggest and most diverse of it’s kind. Please read more about the museum and the exhibition below.
Help us solve the following problem we experience with our “Muscle Powered Proof of Work” installation:
Me and a friend have invested a lot of time to build an installation for the Museum. It is basically a 10GHash/s miner and RapberryPi which is powered by a hand generator (Maxon DC motor with planetary gear). Here are some pictures of the installation, although not entirely put together yet. There are still some changes planned.
https://www.dropbox.com/sh/0qcvl3wu4romhnt/AAAYF08lnVAy6W6KEepE7e2Ua?dl=0
Now let’s get to the core of our problem:
We are mining at the getwork diff1 pool btcmp.com as it is a true pps pool with getwork diff1. The visitors in the museum can power the generator for 2-3min and see directly how many Satoshis the "network" (actually pool but we don't want to confuse the visitors to much at that point) has given the museum for their work. This all works well so far but one problem remains. Sometimes the pool does not get a share from us for more than 40 seconds or even more than 60 in some cases. I have calculated that with 8.4 GHash/s we should find a share about every 0.5 seconds in average (diff1). I think when the pool gets a share it gets all the hashes as it then accounts for several Satoshis. Statistically we get per minute what we should get in theory. We would very much like to lower the time between the accepted shares by the pool, however. This would help to make the overall experience much smoother for the visitors.
Please look at this screenshot from MinePeon and answer some questions:
https://www.dropbox.com/s/lb1jei4trc9kqe5/MinePeonScreenshot.png?dl=0
We see that we get a lot of diff1 hashes. However, only 11 shares/packages have been accepted. The Is there a possibility to set the miner SW so it submits to the pool as soon as a share is found? It seems to send them in packages which sometimes have 4-5 seconds in between but sometimes a much as 80 seconds. I would like to submit packages of hashes much more often. How can this be influenced?
What exactly are the Getworks (GW)?
What exactly are the Accepted ones (Acc)? This is where the TipBounty is. Help us to get a better Acc/diff1 ratio. Best would be 1:1.
What exactly are the rejected ones (Rej)?
What exactly are the discarded ones (Disc)?
What exactly are the difficulty one hashes (diff1)?
Now some of these questions seem very very basic but it is important for us to understand what these are and how we can influence these. We have a 1:1 correlation between the Acc and the pool side acknowledgement of shares/packages. So whenever the MinePeon shows one more for this value the pool value for last submitted share goes to “moments ago”.
Does the miner SW have a setting where we can set after how many diff1 hashes a package of hashes is sent to the pool? If no, do you have another idea why so few are sent? Ideally we would set it so the diff1 hashes are sent every 5 seconds or so, probably even more often.
Is stratum with fixed diff1 possible? If so, would it be better to use stratum?
Are there critical settings if we should know of? (we have tried --request-diff and --no-submit-stale)
We are using BFGMiner on MinePeon if that matters. We could switch to CGMiner if that would help. Any help is very much appreciated. The museum is doing a great job explaining Bitcoin basics. We had special focus on interactive learning and have several things to underline this.
I hope to hear back from you so we can improve our installation. Please don't hesitate to ask if you have further questions. We are both not mining experts.
Thanks for reading and AMA.
SimonBelmond
Current features of the Bitcoin exhibition at the Zürich MoneyMuseum:
Current Features:
  • Life screen with various stats/charts/parameters/transactions…
  • Printed infographics.
  • Muscle powered PoW: Hand generator with 5v and 3.5-5A output, Raspberry Pi, MinePeon, 5x Antminer U2+ plus a screen to show the hash-rate at the pool and/or in MinePeon web interface. This screen will not be hand powered. This installation will complement their coining die (go to 1:27 to see what I mean).
  • The Bitcoin mining evolution (CPU, GPU, FPGA, ASIC)
  • A few short (2-3 minutes) interviews.
  • Other wallets, Trezor, PiperWallet
  • ATM Prototype, functional
  • MoneyMuseum Bit-Cards
  • PiperWallet to use.
  • Casascius and other physical Bitcoins, Wallets (also some commemorative coins), Paper wallet like one out of the first Bitcoin (A)TM ever
  • Bitcoin Quiz
  • 12 Picture tours
    • Bitcoin for beginners
    • Bitcoin advanced
    • Debunking 13 Bitcoin myths
    • What you definitely have to know
    • The history of Bitcoin
    • Bitcoin und traditional forms of money
    • Alternatives to Bitcoin
    • Citations about Bitcoin
    • How do I open an account?
    • How do I get Bitcoin?
    • Bitcoin community and economy
    • Bitcoin as a platform
I see this as a good opportunity for Bitcoin, so let’s embrace it. I am especially excited to compare the traditional forms of money which used proof of work to the new money which also uses proof of work. I think in that context it will be much easier for the visitors to value this concept.
A lot of schools and other groups book guided tours at the museum. It is open on every Friday from December 05. On. Entry is free of charge.
Edit:Markdown, typos
submitted by SimonBelmond to Bitcoin [link] [comments]

FPGA Learning and Use for bit/altcoin mining

Hello folks
I've started to learn a bit about the FPGA hardware, and wanted to expand into having a goal that I could pursue. As such, I decided that I (likely unprofitably) want to set up an FPGA to mine bitcoins/altcoins, simply because I am more motivated when I have a goal in mind, and this seems like a good starting point. Does anyone have any recommendations for a beginners/intermediate FPGA board that might have a good foundation for something like this?
submitted by Packeselt to FPGA [link] [comments]

8 x Xilinx VCU1525 FPGA Crypto-Mining Rig Demo - YouTube Bitcoin Mining with FPGAs (EC551 Final Project) DIY FPGA  Installing and Configuring the KU115 for Crypto ... One of THE WORST INVESTMENTS in Cryptocurrency EVER  SQRL ... ELE 432- FPGA Bitcoin Miner

As consensus algorithms increasingly become ASIC-resistant, GPU mining cards appear to be going the way of the dodo. While GPUs struggle at this technological crossroads, Field Programmable Gate Array (FPGA) mining cards are seeing a groundswell in popularity because of lower costs, algorithm customization, and increased efficiency. Estimates are $1 per BitCoin for electricity (GPU mining). Current BTC price is around $6-7 each. It is all about the ROI window. If BTC drops to below $1, then FPGA mining would rule the day. But, do you see any reason for BitCoins to fall in value any time soon? Experienced mining experts in the digital currency space have already started to call out this alleged scam. I don't know who needs to hear this, but: you can't *profitably* mine Bitcoin with an FPGA. Ever. Period. Disclaimer: You can technically mine Bitcoin with an FPGA, but why the fuck would you. ASICs for bitcoin were introduced in 2013 and, as of November 2017, they are the best processors available for mining bitcoin and they outperform FPGAs in power consumption. Mining pools. To offset the difficulty of mining a block, miners started organizing in pools or cloud mining networks. First of all, this desktop-based application work with Windows, Linux, Mac OS X. Secondly, it allows its users to move the mining devices (FPGA, AISC) to different currencies (Bitcoin, Litecoin). This software is automatized meaning that it looks for pools and lucrative altcoins on its own.

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8 x Xilinx VCU1525 FPGA Crypto-Mining Rig Demo - YouTube

This is why you should switch to FPGA Mining! Hey Guys! Welcome to the first episode of our whiteboard story! Get deeper knowledge about FPGA Mining https://fpga.guide/en/ Ask anything on ... One of the worst investments in the Bitcoin and cryptocurrency space EVER wasn't actually a coin, token, or crypto project, it was actually a mining rig or m... Bitcoin Mining with FPGAs (EC551 Final Project) - Duration: 6:11. Advanced Digital Design with Verilog and FPGAs - Boston University 5,295 views I decided to mine Phi2 algo on a pool that sells the coins for Bitcoin, using pools like this usually result in a faster ROI as you are mining the most profitable coin with others and selling your ... Beginners' Openings and Tactics - GM Varuzhan Akobian ... T4D #84 - Pt 2 Bitcoin Mining, BFL ASIC vs FPGA vs GPU vs CPU - Duration: 28:50. mjlorton 63,615 views. 28:50.

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