Voltage regulator for standalone arduino
hi all,
i have finished "rpm meter" , have been testing it. i'm happy how works, i'd solder permanent circuit including standalone arduino (atmega328p-pu) much guy has done. then, have adafruit boards, , following the arduino breadboard tutorial. have ordered need tayda.
while waiting parts arrive, doing lot of googling , reading making own standalone arduino. came across youtube video of building breadboard arduino circuit. commenters said using 7805 voltage regulator 12v supply cause voltage regulator hot, didn't know, quite important me want use 12v power supply (well, don't want to...it's been forced upon me). understanding these kind of breadboard arduino builds best run power supply 5v or close possible not overheat 7805 volatge regulator.
the place standalone arduino (and circuit) mounted enclosed space - wooden rectangular box has holes on 1 side airflow, , computer fan built in on other side (which runs @ 7000 rpm) generate airflow. there small dc motor in space rpm tracking, , that's why fan there in first place. standalone arduino mounted right next fan (basically because there else can place it), that's 1 thing. questions are:
1) fan enough keep voltage regulator cool, or need large heatsink 7805 well?
2) came across alternative voltage regulor in google travels, de-sw050. product page suggests "any application linear or ldo regulator dissipating heat or large heatsink undesirable ".would better choice me use instead of 7805 if want use 12v supply or still have heats problems regulator due 12v supply?
3) if possible use de-sw050 instead of 7805, simple matter of building whole circuit breadboard arduino tutorial suggests , substituting de-sw050 7805? de-sw050 datasheet says "pin-compatible common 78xx family of linear voltage regulators". also, "they have integrated decoupling capacitors, external capacitors not necessary". thought double-check gurus here first!
apologies long post. out there has ideas, or suggestions. there undoubtedly many things have not though about!
many thanks,
candice
i have finished "rpm meter" , have been testing it. i'm happy how works, i'd solder permanent circuit including standalone arduino (atmega328p-pu) much guy has done. then, have adafruit boards, , following the arduino breadboard tutorial. have ordered need tayda.
while waiting parts arrive, doing lot of googling , reading making own standalone arduino. came across youtube video of building breadboard arduino circuit. commenters said using 7805 voltage regulator 12v supply cause voltage regulator hot, didn't know, quite important me want use 12v power supply (well, don't want to...it's been forced upon me). understanding these kind of breadboard arduino builds best run power supply 5v or close possible not overheat 7805 volatge regulator.
the place standalone arduino (and circuit) mounted enclosed space - wooden rectangular box has holes on 1 side airflow, , computer fan built in on other side (which runs @ 7000 rpm) generate airflow. there small dc motor in space rpm tracking, , that's why fan there in first place. standalone arduino mounted right next fan (basically because there else can place it), that's 1 thing. questions are:
1) fan enough keep voltage regulator cool, or need large heatsink 7805 well?
2) came across alternative voltage regulor in google travels, de-sw050. product page suggests "any application linear or ldo regulator dissipating heat or large heatsink undesirable ".would better choice me use instead of 7805 if want use 12v supply or still have heats problems regulator due 12v supply?
3) if possible use de-sw050 instead of 7805, simple matter of building whole circuit breadboard arduino tutorial suggests , substituting de-sw050 7805? de-sw050 datasheet says "pin-compatible common 78xx family of linear voltage regulators". also, "they have integrated decoupling capacitors, external capacitors not necessary". thought double-check gurus here first!
apologies long post. out there has ideas, or suggestions. there undoubtedly many things have not though about!
many thanks,
candice
what current draw 12v setup?
Arduino Forum > Using Arduino > General Electronics > Voltage regulator for standalone arduino
arduino
Comments
Post a Comment