Hello.
I've received a new nano board this morning (to update the one used in my Half-Life restrooms project and use the old one for my Tron disc project) and this one shows a 3.2 version.
here we have only the 3.0 schematics
so what are the differences? hardware? software? where is the schematic of the 3.2? because it's usefull when I use the board to create my electronic around.
Some things:
Labeling changes:
PWR LED is now ON
Some layout changes - fewer support parts around the FTDI chip.
Addition of PTC resettable fuse.
Looks like bigger caps on the power supply lines too.
Functionally, I'd say probably no differences to you as the user - pinout at the connectors hasn't changed.
that was only a fuse in 0805/0603 size? not allready a PTC?
yes I Think you're right CrossRoads about the functionnalities
I'm using the arduino board more as a chip adapter because I prefer to use a cross compiler and put the code directly in the chip than to use IDE/bootloader.
the two options have pro/cons
other changes:
Power led is now ....green the cheapest old vintage one in green-yellowish 570nm wavelenght instead of great 525nm true green.
TXD led is green (570nm), RXD led is red, L led is yellow
when connected on the USB out of the box the "L" led blink 4 times-pause-4 times-pause etc and the TX one is flashing every two cycles of the "L" led....)
sending "TESTATA" word @38400 bauds
Unfortunately they have not added the simple low power modification on the FT232 like I've proposed in the hardware section to decrease the standby current of the board when in "power down" (only a shorted copper jumper required so no more cost)
27€ (ex taxes) for a board with 4 euros of components becomes to be expensive. (38.8€ ex taxes from farnell)
I'm ok to support a team and buy genuine but if they not listen/answer their free user request/ameliorations and start to use cheaper components to earn money...this is the beginning of the end xD
ok I've find more/updated informations here:
like before, unfortunately no decoupling cap at the LDO input (Vin).
This V3.2 version is an issue for my application because the 3.1 was using an UA78M05 regulator and I've ordered a MIC5239S µpower LDO to replace it.
now the V3.2 is using a LM1117 regulator with another pinning. the pin 1 is GND instead of Vin.
no luck! I must order a new micropower LDO to replace the LM1117 on my new V3.2 because the two boards must work in low idle power applications.
it's a pleasure to work with old schematics.....I think update the documentation on arduino.cc could be a good idea
another thing is the maximum input voltage. they allways say 20V here but this value was ok for the UA7805 (25V and absolute max 35V). not for LM1117 where 15V is the max and 20V is the absolute maximum value!
Possibly one of the first obvious differences between arduino.cc and arduino.org.
The older nanos were manufactured by Gravitech, and the new ones by arduino.org
I sorta thought the nanos were always rather overpriced. Nowadays you can consider the Baite nano derivatives with the ch340 USB chip...
yes Westfw your right. But I can build my own too, it will be cheaper But I know what it is to have their own ideas stolen and used as commercial products (personal experience inside with my ILDA laser harp). But I like the "Not do to others what you would not like done to yourself".
It's ok to support the inventor/developper team up to a certain price limit but when we know the real cost of the board + components they becomes very overpriced.
the cheapest old vintage one in green-yellowish 570nm wavelenght instead of great 525nm true green.
