Mindboards

All of these could also be driven from a sensor port using a PCF8574 - http://www.futurlec.com/Mini_PCF8574.shtml. h-g-t, thank you for the answer. Could you please explain how power could be driven from PCF8574? I have several PCF8574 sets from Mindsensors so could use one of them instead of Mini ...

Dear All! I am using Mindsensors 8 channel servo controller( http://mindsensors.com//index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=93 ) to run multiple servos. It required external 6 Volt power and I am using Mindsensors 4AA Battery Holder with NXT Mount ( http://mindsensors.com...

Gents, I assembled Mindsensors PCF8574 and its working ok. The only problem I realize after assembling is it size. To hide that plate required quite large area. So, the next step I am planning is to assemble custom PCF8574 and make it as small as possible. I found a simple solution in "Extreme ...

Finally I bought couple mindsensors PCF8574 sets http://mindsensors.com/index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=71 Now I have coupl e more questions about it. On PCB connector area, each item (ie 5 v) have two holes. Are they exactly the same and doubled for convinience? W...

Thanks everyone for your help! Lifelites wired resisters into some LED's thats why regardless the color they all rated 3.2V.

Update.

Lifelites helped me with socket type as well as provided LED parameters.
Could you please recommend me a resistor size and type (metal or carbon) for the following LED's:
3.2 V and 20 mA.

Am i right thinking about 120Ohm and 1/4 Watt?

Thanks and regards,
Alex

Really simply question which still isn't clear to me.

What is the difference between PCF8574 and PCF8591? Please show it on examples rather than tell that one is digital IO other one is analog.

Thanks in advance!
Alex

Dear All, I have a lot of LED's for LEGO from Lifelites ( http://lifelites.com/ ). Now would like to connect them to Mndsensor PCF8574. To make a device flexible I would like to solder on board female sockets like Lifelites use ( http://lifelites.com/products/133 ), rather than LED cables. Does anyo...