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Author Topic: Help po Uminit yung PIC877A at Yung LM340  (Read 7798 times)

Offline 0hñ33n

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #40 on: September 09, 2008, 11:52:15 PM »
Quote from: rdpzycho on September 09, 2008, 10:47:20 PM
doon mo ilalagay ang supply voltage mo. nakapackage lang 'yan na darlington transistors. parang 'yung TIP31 mo rin pero nasa isang IC na lang.

okie po.. pgnasa min n ung ULN2003 testing n po nmin..

Salamat po sa Mga reply.. 2m p kc kmi bili.. ;D ;D
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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #40 on: September 09, 2008, 11:52:15 PM »

Offline kinyo

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #41 on: September 09, 2008, 11:58:30 PM »
use ULN2003 ... konti lang naman difference ng presyo

I can tell you that i've already seen too many circuits using it for applications such as yours ... it is very reliable, considering that it can sink up to 500mA on each port, the 150mA solenoid current should be no sweat (but of course you can expect a little heating when all ports are driven continuously)  ;D
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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #41 on: September 09, 2008, 11:58:30 PM »

Offline 0hñ33n

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #42 on: September 11, 2008, 04:37:46 PM »

ok above is the setup na nasuggest.
Quote from: sshrekk on September 09, 2008, 09:44:48 PM
Maganda yong ULN2003 ni Rdpzycho, wag mo nang gamitin yang TIP31C mo, kung gagamit ka ng 1N4002 na rect diode, maliit lang kasi ang hfe niyang TIP31C hindi ka aabot sa saturation @ 4.3mA (1K res) baka yang TIP31C nanaman ang iinit pag continous ang trigger ng solenoid.  

 :)

ok mula sa set up na nailagay namin nun una ito n yung set up ngayun tinggal na namin yung TIP31 pati resistors so tama po ba itong set up na ito...

One more thing ung PIN 7 input&outpu since 6 lng ung gnamit namin sa ULN2003

is it hanging or should it be connected to the gnd????

 ??? ??? ??? ??? ???
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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #42 on: September 11, 2008, 04:37:46 PM »

Offline mArKhAo

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #43 on: September 11, 2008, 04:43:22 PM »
since hnd mo gagamitin, pwedeng naka hang lng yan... ;)
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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #43 on: September 11, 2008, 04:43:22 PM »

Offline 0hñ33n

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #44 on: September 11, 2008, 04:45:58 PM »
ok ok we are going to try the set up above without the ic muna to check it
 ;D ;D ;D

hehe mark musta na iecep senyu?? hehehe
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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #44 on: September 11, 2008, 04:45:58 PM »

Offline mArKhAo

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #45 on: September 11, 2008, 04:50:42 PM »
hehe... may gen assembly ah.. malapit sa nyu... punta kau... sa indang...

ung uln2003 nga pla, pag nag input ka ng high sa IN 1 ang output ng OUT 1 is low... hehe... baligtad.
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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #46 on: September 11, 2008, 05:23:52 PM »
Quote from: Ohneen on September 11, 2008, 04:37:46 PM

One more thing ung PIN 7 input&outpu since 6 lng ung gnamit namin sa ULN2003

is it hanging or should it be connected to the gnd????

 ??? ??? ??? ??? ???

Mas maganda put the 7 In to Gnd at 7 Out hanging.....baka kung ano pa ang pumasok sa pin na yan...hehehehehe  ;D
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Offline zer0w1ng

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #47 on: September 11, 2008, 05:35:33 PM »
The common connection of the solenoids should be connected to +16-24Vdc supply domain.
All unused inputs can be tied to GND.
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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #48 on: September 11, 2008, 05:52:03 PM »

Yong  "all unused inputs should be tied-up to GND"  ni Zero1ng is one of the important rules of using digital devices... ;)
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Offline 0hñ33n

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #49 on: September 11, 2008, 05:59:01 PM »
Quote from: sshrekk on September 11, 2008, 05:23:52 PM
Mas maganda put the 7 In to Gnd at 7 Out hanging.....baka kung ano pa ang pumasok sa pin na yan...hehehehehe  ;D
Quote from: zer0w1ng on September 11, 2008, 05:35:33 PM
The common connection of the solenoids should be connected to +16-24Vdc supply domain.
All unused inputs can be tied to GND.
Quote from: sshrekk on September 11, 2008, 05:52:03 PM
Yong  "all unused inputs should be tied-up to GND"  ni Zero1ng is one of the important rules of using digital devices... ;)

weee salamat sa lahat ng nag advice pogi points kayu sa akin hehehe

so ito na yung set up namin...

di p namin kinkabit yun new pic (250 rin un  :'() pero with the above set up the PIC will now be safe.. right??

 :D :D salamat tlga sa mga nag help hehe tska kay mark thru YM
weeeeeeeeeeeeeeeeeeeeeeeeeeeee
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Offline 0hñ33n

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #50 on: September 11, 2008, 06:05:17 PM »
wow tumaas ata stars ko kakatanung huhuuh


 :'( :'( :'(

anyway wala naman po siguro kaso na port A ginamit namin diba??

hehehe salamaat ulit mga master sana di na umint ung regulator at PIc once kinabit nanamin....



Balak po namin isang Power supply to provide Voltage to both PIC and solenoids or mas advisable ba yung hiwalay pa ang Pow Spply nun dlwa???

 :D :D :D hehe nag titipid kasi hohoho sna isang power supply n lng
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Offline 0hñ33n

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #51 on: September 11, 2008, 06:06:56 PM »
Quote from: mArKhAo on September 11, 2008, 04:50:42 PM
hehe... may gen assembly ah.. malapit sa nyu... punta kau... sa indang...

ung uln2003 nga pla, pag nag input ka ng high sa IN 1 ang output ng OUT 1 is low... hehe... baligtad.
wow sa indang?? kailan yan weee i wana go hehehe  ;D ;D ;D ;D
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Offline ♪ ♫ ♫ ♪ ♪ ♪ ♫ ♫ ♫

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #52 on: September 11, 2008, 06:09:35 PM »

All INPUTS bro..... wag outputs baka kung ano pa ang mashorted mo......
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Offline 0hñ33n

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #53 on: September 11, 2008, 06:19:38 PM »
Quote from: sshrekk on September 11, 2008, 06:09:35 PM
All INPUTS bro..... wag outputs baka kung ano pa ang mashorted mo......


ok n po thanks for reminding dapat pla inputs lng ang directed to gnd if not used thanks for checkin salamat po sir

 ;D ;D ;D
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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #54 on: September 11, 2008, 06:26:52 PM »
yann okay na bro... :)

Saka since your using soleniods (lots of turns coil) wag mong ilapit yang mga soleniods mo sa PIC....kung pwede use grounded shield, for experiments only, gamit ko yong aluminum foil ng ulam tapos tie it up to gnd, kung wala...pwede rin yong foil ng sigarilyo hehehehehehe

Saka huwag mong kalimutan lagyan ng tig-iisang 0.1uF na tantalum bawat supply ng mga digital devices mo bro, isang importanting rule din ito sa mga digital devices.....

wwwhhheeww...sana wala na akong nakalimutan.... :(

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Offline rdpzycho

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #55 on: September 11, 2008, 10:35:03 PM »
kung malakas 'yung solenoid kaya magpa-hang o magpa-reset ng MCU 'yan kapag malapit. ;D
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Offline 0hñ33n

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #56 on: September 11, 2008, 10:38:15 PM »
ohoohoo  8)

ok mga masters thanks for reminding me that again

 ;D

we are using mini magnetic solenoids para sa project n ito

hehehe...

Quote from: sshrekk on September 11, 2008, 06:26:52 PM
yann okay na bro... :)

Saka since your using soleniods (lots of turns coil) wag mong ilapit yang mga soleniods mo sa PIC....kung pwede use grounded shield, for experiments only, gamit ko yong aluminum foil ng ulam tapos tie it up to gnd, kung wala...pwede rin yong foil ng sigarilyo hehehehehehe

Saka huwag mong kalimutan lagyan ng tig-iisang 0.1uF na tantalum bawat supply ng mga digital devices mo bro, isang importanting rule din ito sa mga digital devices.....

wwwhhheeww...sana wala na akong nakalimutan.... :(



you mean po ba is yung sa may regulator part???
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Offline beginner wan

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #57 on: September 11, 2008, 10:52:17 PM »
kung di ako nagkakamali, yung 0.1uF ay ilalagay mo sa MCU mo..as close as possible sa supply pin ng mCU mo..
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Offline 0hñ33n

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #58 on: September 11, 2008, 10:56:07 PM »
 ::)

hmmm
as close as possble ok ill chek that out

so it acts as a protection for the MCU ok heheh

^_^ asteeg....

what else pa ba kulang  ;D
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Offline maldihtah13

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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #59 on: September 12, 2008, 10:14:48 AM »
Quote from: Ohneen on September 11, 2008, 06:05:17 PM
anyway wala naman po siguro kaso na port A ginamit namin diba??

Opps di ko napansin sa diagram mo na PORTA gagamitin mo. Remember RA4 is open drain input IIRC.

Connect a 10K pull-up resistor at this pin.
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Re: Help po Uminit yung PIC877A at Yung LM340
« Reply #59 on: September 12, 2008, 10:14:48 AM »
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