Toasty64
- Thread starter ToastBucket
- Start date
ToastBucket
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Eh. There are quite a few holes from where I didn't do a good job with the bumper filler, but it's pretty good imo. <3 the stencil.
ToastBucket
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04tm34l3 said:showcase the case *punny* on a bathroom counter?cats
Heck yes. My bathroom FTW
ToastBucket
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Porcelain reflects light really well.
ShockSlayer
Probably SS
Did not notice this thing untill today.
DO WANT
DO WANT
)
ToastBucket
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HOW I'M GONNA POWER IT:
Two of these wired in parallel, giving me 3.7v and 10AH. I will then use this buckboost regulator to give me the needed 3.3v, as the battery's voltage drops to about 2.4v near the end of it's life. The regulator accepts from 1.8v-5.5v and will output my needed 3.3v. It can also handle the 1000-1500 Amps (and more) that the 3.3v line will pull. I will then use a step up (I forgot the name of it
) to give me my needed 7.4v.
HOW THIS HELPS ME:
I did some math stuff and figured out that if I wire in parallel and step up, I get about 4-6 hours (4.2-5.7h). If I wire in series, I only get 2.5-4 hours (2.7-3.7)
WHY:
The N64's 12v line draws 250-300mA at 7.4v and the 3.3v line draws approx. 1000-1500mA. If I wire in series like we have been all these years, that will be 1350-1850mA (12v line + 3.3v line + ~100mA for screen +~50mA for audio amp). 5000/1350=~2.7 and 5000/1850=3.7. If I wire in parallel and use the buck boost and step up, it will be around 1750-2350mA (12v*2+3.3v+screen*2+audio amp). 10,000/1750=~4.2 and 10,000/2350=~5.7.
If I'm right, this portable will be tiny, and have decent battery life. 4-6 hours aint bad in my opinion
Two of these wired in parallel, giving me 3.7v and 10AH. I will then use this buckboost regulator to give me the needed 3.3v, as the battery's voltage drops to about 2.4v near the end of it's life. The regulator accepts from 1.8v-5.5v and will output my needed 3.3v. It can also handle the 1000-1500 Amps (and more) that the 3.3v line will pull. I will then use a step up (I forgot the name of it
) to give me my needed 7.4v.HOW THIS HELPS ME:
I did some math stuff and figured out that if I wire in parallel and step up, I get about 4-6 hours (4.2-5.7h). If I wire in series, I only get 2.5-4 hours (2.7-3.7)
WHY:
The N64's 12v line draws 250-300mA at 7.4v and the 3.3v line draws approx. 1000-1500mA. If I wire in series like we have been all these years, that will be 1350-1850mA (12v line + 3.3v line + ~100mA for screen +~50mA for audio amp). 5000/1350=~2.7 and 5000/1850=3.7. If I wire in parallel and use the buck boost and step up, it will be around 1750-2350mA (12v*2+3.3v+screen*2+audio amp). 10,000/1750=~4.2 and 10,000/2350=~5.7.
If I'm right, this portable will be tiny, and have decent battery life. 4-6 hours aint bad in my opinion
Basement_Modder
He who mods in thy basement.
I approve this message. 
pkmnjunky7
Active Member
ToastBucket said:
This. Have you tested this or did someone else test this out somewhere else? I've been looking for this information for a while but can't find it posted anywhere. Basically I need to know how much the 3.3 line pulls on average. My multimeter is busted right now so I can't do my own testing unless I run out and buy a new one. The 3.3v regulator I have has a max output of 1000-1250mA. I'm just worried it might fry...
ToastBucket
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XCVG said:
Me said:
pkmnjunky7 said:
No I haven't tested it. Got all those numbers from Snipeye.
ToastBucket
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samjc3 said:
Yeah probably
Actually, you'll get about the same amount of battery life with series or parallel.
Series: 7.4 x 5Ah = 37Wh
Parallel: 3.7 x 10A = 37Wh
(Though with 90% efficiency, you'll actually get about 33.3 Wh.)
Unless you have some super efficient dc-dc converters, 7.4V is better. Plus, you know it works and the sound won't need to be as amplified.
Series: 7.4 x 5Ah = 37Wh
Parallel: 3.7 x 10A = 37Wh
(Though with 90% efficiency, you'll actually get about 33.3 Wh.)
Unless you have some super efficient dc-dc converters, 7.4V is better. Plus, you know it works and the sound won't need to be as amplified.
ShockSlayer
Probably SS
Farnsworth is right, it is always better to step down than up.
SS
SS
ToastBucket
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But I'm stepping down for the higher current draw stuff and up for the lower current draw stuff. The buckboost has 96% efficiency and the step up has 90% (it's a PTN04050CAZ)
