Whatever happened, before blaming this guy, remember what people were saying when the first reports of cracked mtgox accounts were reported on this forum. Nobody believed them. A couple of days later the mtgox account database was available for download.

With fees of 0.65% you need ~15ct trading margin just to recover the fees. There were not many occasions in the last days where you could pull a profit.

To convince me it is still possible, how much has anybody here earned during the last week with a bot? You don't need to tell how you did it ;-)

The question for a bot is: what shall it do? Volatility is low, by just buying and selling within a range you will barely make profit. For longer term strategies, you don't need a bot, but a concept how to predict what the market will do.

A bit off topic, but has anybody though about simply using Arduino http://arduino.cc/en/ together with an Ethernet shield http://de.rs-online.com/web/cpd/6961661/ and then just making one new shied for every FPGA that shall be plugged on top?

This could be the 100€ "backplane" with Ethernet and each FPGA board would need nothing than the FPGA and power. This could also keep the cost of the daughterboard low.

True, but if you put an FTDI USB chip on every daughterboard (is this what you propose?), how do you connect it to the FPGA? Here you still need I2C, SPI or JTAG. Then you can also put it directly on the backplane and connect the daughterboards only using i.e. I2C. USB on the daughterboard will probably also require more careful routing and special impedance matched connectors because it is a high speed bus.

I think you all should try to keep it simple. That increases chances to produce something that is working in time and without multiple iterations for PCB production and assembly (money!). The later this thing is ready probably the higher is mining difficulty, this in the end also costs money.

As far as I can tell USB is a much more complex protocol than SPI or I2C. Thats why FTDI can sell chips. Implementing USB inside the FPGA costs LE cells that could otherwise be used for mining. In addition there is a host needed to connect multiple slaves. For mining no bandwidth is needed. SPI, I2C, JTAG all are capable of pushing enough bits for mining.

My proposal:

• make the motherboard simple, put only the FPGA + decoupling + one of (SPI, I2C, JTAG), put an direct JTAG connector on the board for debugging the FPGA.
  
• let the motherboard supply one of (SPI, I2C, JTAG) + programmable power supply + reference clock. Power needs cooling and you normally don't want to have this on the daughterboard. Connect the motherboard to a standard PC power supply.
  
• The simplest motherboard would then just put an FTDI USB connector on the motherboard and you are ready to go. Easy debugging. Anybody who feels up to the task can then replace it in a second step with a microcontroller and ethernet.
  

We build a similar board (not for mining) at work and you will find out that it is a pretty complex task. You will succeed much faster if you try to keep complexity as low as possible.

And just as a reminder: to my knowledge there is at least one startup working on an ASIC, announced to be ready in October. If this is true, an FPGA board only suitable for mining will be worthless.

In my case the transaction was created by the Andriod app "Bitcoin Wallet". I have no way of pointing it to specific peers.

Anyway, as far as I know in the moment all nodes run the same software, because except of bitconj there is only one implementation. So why should some of peers relay the transaction while others do not when they are all running the same software and following the same rules?

Thanks, that can explain the problem. Seems like only very few people are aware of details like this. I think for a project that is as big as bitcoin starts to become, basic features like this one should be documented somewhere together with a change list for new releases. Don't want to blame anybody, thanks to everyone working on the software!

The blockchain download problem is now gone after a reinstall. I was able to receive 0.001BTC. I sent 0.001BTC back to my PC wallet 16h ago (1NCTneo6yy8b1bok7F2U7RP4VgciHY2sik) but the transaction does not show up, not even unconfirmed, both client have been runnning constantly. Did anybody manage to sent money from the Android client? What is the clients policy for resending unconfirmed transactions?

The 0.001 BTC should go to this address: 1NCTneo6yy8b1bok7F2U7RP4VgciHY2sik. It was sent yesterday (16h ago) and it is not in blockexplorer and not in the unconfirmed transactions on bitcoincharts. My client (on Android) is still running and is connected to 7 peers. So if the net does not drop such small transactions without fee, I assume the client does not work properly.

While trying the Bitcoin Wallet for Android I have tried to send 0.001 BTC to the phone (in this case with 0.0005 fee) and back (this time without fee, because the app does not implement fees in the moment).

The transaction with fees went through nicely, but the backward payment without fees did not arrive even after a day. I searched the unconfirmed transactions on
http://bitcoincharts.com/bitcoin/
but cannot find it. It also does not show up in my PC-client. Is it possible that such small transactions without fee are dropped completely by the network? Are there any documents I should read?

It always shows downloading block chain: 0% Do you know what might be wrong?

Looks good! Does it store the blockchain in internal memory? Is it possible to push it to the sdcard for memory constrained devices?

Where exactly is the file?

I hit the refresh button already a couple of times and it seems to do something, as it is just sucking up my data flatrate. But still no visible transactions.

First thanks, I think this client is a big step in the right direction, but it seems it still has some flaws:

I send me a money request by mail and send sent 0.01BTC to the android client in order to try it. I did this 8 hours ago, the transaction has 76 confirmations but it still has not appeared in the android client. I have tried to turn off WLAN and only use 3G in order to make sure it is not a firewall problem, but nothing so far.

What can I do? Is there any way to get hold of the wallet of this thing? Or make it somehow rescan the blockchain?

BTW: accidentally posted the same question already on another thread, but I think this one is the right one to ask.

First thanks, I think this client is a big step in the right direction, but it seems it still has some flaws:

I send me a money request by mail and send sent 0.01BTC to the android client in order to try it. I did this 8 hours ago, the transaction has 76 confirmations but it still has not appeared in the android client. I have tried to turn off WLAN and only use 3G in order to make sure it is not a firewall problem, but nothing so far.

What can I do? Is there any way to get hold of the wallet of this thing? Or make it somehow rescan the blockchain?

Hi,

my client tells me a 0.01 transaction fee is required for 0.38 BT transaction, because of its size, complexity or use of recently received funds. This is roughly 3% transaction fee, nearly what paypal charges. Can someone tell me why this is required for such a small transaction?

I am using the mac client 0.321-beta.

Ok, thanks.

Should have received 0.3BTC today afternoon. They are not in my deepbit balance anymore and not in the block chain with my address. I rechecked it on blockexplorer, the money is not there. The address on my deepbit account is still correct: 13PsdCr2GgxGLngMsB5Ha7CJUYsjxUrj7g

Can somebody please check why the money is not sent?

Thanks.