Quote from: thedrs on August 25, 2017, 07:51:11 AM

Want to demo mining to kids for educational purposes (plz dont spam on its not worth mining with old rigs bla bla - this is a tech issue, i don't really need to mine a block):

I setup latest bitcoin core 14.2 full node on a win7x64 machine with correct bitcoin.conf settings for solo mining (tested with bitcoin-cli)
I setup latest 5.4.2 bfg miner (64bit)
I plugged in my old BFL jalapeno ASIC box (dusted it off) - win7 installed drivers automatically from win update correctly (COM14).

ran BFGMiner (according to BFGMiner readme example for solo mining):

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bfgminer -o http://127.0.0.1:5252 -u asdfasdf -p asdfasdf --generate-to 1QATWksNFGeUJCWBrN4g6hGM178Lovm7Wh --coinbase-sig "rig1: This is Joe's block!"

BFG finds pool and authenticates correctly, but it has trouble connecting to the Jalapeno com port 14:

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NO DEVICES FOUND: Press 'M' and '+' to add
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
[2017-08-25 10:47:12] Waiting for devices; press 'M+' to add, or 'Q' to quit
[2017-08-25 10:47:12] Probing for an alive pool
[2017-08-25 10:47:12] Network difficulty changed to 888G ( 6.36Eh)
[2017-08-25 10:47:12] Long-polling activated for http://127.0.0.1:5252 (getblocktemplate)
[2017-08-25 10:47:12] Pool 0 http://127.0.0.1:5252 alive
[2017-08-25 10:47:13] Longpoll from pool 0 detected new block
[2017-08-25 10:47:15] Failed to open Device Parameters registry key in lowl-vcom.c _vcom_devinfo_scan_windows__hubport():556: The system cannot find the file specified.
[2017-08-25 10:47:15] FT_GetComPortNumber(00000000002D5F20 (0), 14)

(last 2 messages continue endlessly)

[also tried to GPU mine - my comp crashed, last resort will be cpu mining but i need to recompile your code for that...]

Any suggestions ?

Thanks

Problem solved !

I used a power supply with not enough amps (used 800mAh it was just enough to start the jalapeno but not enough for serial interfacing probably)