I have a Arduino ProMini. ( 5V @ 16MHz)
This has an on Board voltage regulator ( between RAW and VCC) which has a mark S80E
Unable to lay my hands on the data sheet for it. But the query is this :
Now I don' t have a power source greater than 5V to feed to RAW input. So can I use a 5V supply on the VCC pin directly ? Is it OK to do this ? What i mean is this 5V will be seen by the Voltage regulator at its OUTPUT - will it get into a problem due to this in the long run ??
The information you require is listed in the Pro Mini product page.
If you also look at the schematics there is a jumper SJ1 that you can open circuit for low power applications via VCC
MarkDerbyshire:
The information you require is listed in the Pro Mini product page.If you also look at the schematics there is a jumper SJ1 that you can open circuit for low power applications via VCC
Thanks... I guess I must have mentioned this point also. The ProMini that I have is from EBay and its one of the different variants that are floating around ( there was a thread recently on this issue of ProMinis ) . So on my ProMini I don't see any such jumper either on back or front... ;-(
Well without knowing which clone you have got we can't help much. Is it the 3.3V or 5V version.
Email the seller for more information.
You should be able to connect a regulated power supply of the correct voltage to VCC without damage but as it's a clone all bets are off
MarkDerbyshire:
Well without knowing which clone you have got we can't help much. Is it the 3.3V or 5V version.Email the seller for more information.
You should be able to connect a regulated power supply of the correct voltage to VCC without damage but as it's a clone all bets are off
Well its a 5V version. And which clone ? All I can say is its called " The Simple " if that makes any meaning !!
For sure I can contact the seller - but generally I find most sellers on EBay are traders and cannot answer some or most tech queries apart from the data sheet that they (may ) have.
Having said this I suddenly recalled that its possible to power up the board using a FTDI 5V interface. And when doing that 5V does get connected to Vcc and nothing has smoked so far... so I guess I can connect the 5V to Vcc and live happiliy !!
5V on the VCC to power the board is fine.
INTP:
5V on the VCC to power the board is fine.
Thanks !!
Mogaraghu:
Now I don' t have a power source greater than 5V to feed to RAW input. So can I use a 5V supply on the VCC pin directly ? Is it OK to do this ?
Well maybe, the exact behavour is going to depend on the regulator the Pro Mini is using. There is no guarantee that putting 5V on the output of a 5V regulator is going to be safe in all circumstances.
Remove the Pro Min regualtor, just chop the leads with a sharp scalpel.
srnet:
Well maybe, the exact behavour is going to depend on the regulator the Pro Mini is using. There is no guarantee that putting 5V on the output of a 5V regulator is going to be safe in all circumstances.Remove the Pro Min regualtor, just chop the leads with a sharp scalpel.
Hogwash. There is no such thing as a 5v regulator that for some stupid reason also has a reverse breakdown of also 5v.
I give you all of the guarantees.
INTP:
Hogwash. There is no such thing as a 5v regulator that for some stupid reason also has a reverse breakdown of also 5v.
I give you all of the guarantees.
Yeah. The promini has a 3.3 V (output) regulator, right? Not a 5 V one.
The ProMini and clones come in both voltages, very first line of OP mentions which one he's got.
INTP:
The ProMini and clones come in both voltages, very first line of OP mentions which one he's got.
Ok. Thanks INTP.
