starting a sega mega drive project

c_mon · Post by **c_mon** » Tue Jan 16, 2007 1:02 pm

Yes, in a few days time I'll start the project. I have a pal version psone screen and pal version mega drive. I think the make of story is similar to snesp. I have the book so I don't think I'll have problems. If I have any, I'll always look for a hand under this topic. Wait for the first pics!!

c_mon · Post by **c_mon** » Tue Jan 16, 2007 6:42 pm

Here the first question comes; how much current(mA) does official psone screen need?

ShockSlayer · Post by **ShockSlayer** » Tue Jan 16, 2007 7:01 pm

I think its around 1500 maH w/backlight

SS

c_mon · Post by **c_mon** » Tue Jan 16, 2007 7:03 pm

It's very much. So it needs hacking:)

ShockSlayer · Post by **ShockSlayer** » Tue Jan 16, 2007 7:08 pm

c_mon wrote:It's very much. So it needs hacking:)

I think the led backlight mod takes off a HUGE chunk of power.

EDIT: consumption, that is.

SS

vskid · Post by **vskid** » Tue Jan 16, 2007 8:47 pm

ShockSlayer wrote:I think its around 1500 maH w/backlight

SS

I think you've been spending time with Cennar.

Its really about 750ma with the backlight, ~350ma LED mod. Theres been several readings, but thats about the average.

c_mon · Post by **c_mon** » Tue Jan 16, 2007 8:52 pm

Really? It's better then. I thougt of placing parallel attached 2 packs of 7.2 V 2700maH batteries. Is it good? I think it will give 5400maH current and that'll provide me 4-5 hours of power.

c_mon · Post by **c_mon** » Tue Jan 16, 2007 8:58 pm

Actually I did led modding. It ran for about an hour without any problems. When I saw that the light isn't enough to me I bypassed the cv23 to make it brighter. The result was one dead led + one flashing led and one properly lighting led so I didn't do further work on it; just fixed everything how I found. It now works without leds and I don't want to make that boring work again.

vskid · Post by **vskid** » Tue Jan 16, 2007 9:31 pm

You must've shorted your led's.

metalliqaz · Post by **metalliqaz** » Tue Jan 23, 2007 7:51 pm

Current is measured in Amps. Amp-hours does NOT describe current.

Just wanted to make sure you understood that your 2700mAh battery is probably not designed to provide 2700mA (2.7A) of current.

-d

c_mon · Post by **c_mon** » Sun Feb 04, 2007 2:06 am

metalliqaz wrote:Current is measured in Amps. Amp-hours does NOT describe current.

Just wanted to make sure you understood that your 2700mAh battery is probably not designed to provide 2700mA (2.7A) of current.

-d

Well I've just tried two batteries connected as series. One of them was 6volts 4000mah and the other was 1.2 volts 1800mah. Both the screen and the system worked without any problem. So if I use a single pack of 7.2 volts at 4250mah, I suppose there'll be no problem.