i think it might have been my wall charger for the screen....
unfortunately, now the sandisk card reader isnt powering up.
so this sucks.
j
Simple fun psone screen project Digital Photo Frame.
Moderator: Moderators
I had the same problem with the rolling grey bars but scherubino pointed me in the right direction. I added the voltage regulating circuit found in Ben's book... page 159 I believe (Nes section on powering the screen) and it cleared it up perfectly. I am also using the unregulated input power to power my sandisk photo album and they both work great now.
EDIT: Actually, the circuit in the book did not do it for me since the output voltage was like 7.1V. If you replace the 150ohm with a 100ohm resistor it makes the make like this Vout=1.25(1+R2/R1).
7.5V=1.25(1+[3900/780])
the 780 is the 680ohm and the 100ohm in series. works perfect now
EDIT: Actually, the circuit in the book did not do it for me since the output voltage was like 7.1V. If you replace the 150ohm with a 100ohm resistor it makes the make like this Vout=1.25(1+R2/R1).
7.5V=1.25(1+[3900/780])
the 780 is the 680ohm and the 100ohm in series. works perfect now
Good!!!
<a href="http://www.etoway.com/categorybig_26.htm"> Digital photo frames, digital picture viewers, digital photo album: supplied by China manufacturer</a>