barrystyle
New Member
Hi all,
First post here.
I am looking to test a HD44780-based LCD screen, which is currently connected to another circuit.
From what i've seen, 5v to Vcc and normal ground isn't enough to get the LCD to light up. I have tried directly powering the backlight, this also does not work. Will the LCD display anything at all without the backlight?
Are there any easy resistance checks etc I can do to make sure the LCD is working?
I am not sure if the circuit which provides it with data is working either, so I am trying to cross out possibilities here.
Thanks for any replies,
james
First post here.
I am looking to test a HD44780-based LCD screen, which is currently connected to another circuit.
From what i've seen, 5v to Vcc and normal ground isn't enough to get the LCD to light up. I have tried directly powering the backlight, this also does not work. Will the LCD display anything at all without the backlight?
Are there any easy resistance checks etc I can do to make sure the LCD is working?
I am not sure if the circuit which provides it with data is working either, so I am trying to cross out possibilities here.
Thanks for any replies,
james