Dec 7, 2007 #1 J jsbmim Newbie level 4 Joined Nov 29, 2007 Messages 5 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,312 HI, How can I connect five dot matrix display 5X7 using multiplexing method.I whant to control the displays with a ATEMEGA8. Thanks Added after 17 minutes: Helpppppppppppp!
HI, How can I connect five dot matrix display 5X7 using multiplexing method.I whant to control the displays with a ATEMEGA8. Thanks Added after 17 minutes: Helpppppppppppp!
Dec 7, 2007 #2 R rajeshbij Member level 1 Joined Feb 9, 2007 Messages 33 Helped 4 Reputation 8 Reaction score 2 Trophy points 1,288 Location Jaipur, INDIA Activity points 1,468 Re: Dot matrix displays u started asking without searching. have a look at the topic DIY: Moving message display in Topics
Re: Dot matrix displays u started asking without searching. have a look at the topic DIY: Moving message display in Topics
Dec 7, 2007 #3 J jsbmim Newbie level 4 Joined Nov 29, 2007 Messages 5 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,312 Re: Dot matrix displays What I would like to know is how to connect this five dot matrix displays with Atmega8, because ATEMEGA8 has only 28 pins and I have to connect 25 pins and I would like to use as few as possible pins. Thanks
Re: Dot matrix displays What I would like to know is how to connect this five dot matrix displays with Atmega8, because ATEMEGA8 has only 28 pins and I have to connect 25 pins and I would like to use as few as possible pins. Thanks
Dec 7, 2007 #4 dian Member level 3 Joined Apr 16, 2006 Messages 61 Helped 15 Reputation 30 Reaction score 6 Trophy points 1,288 Location Indonesia Activity points 1,574 Re: Dot matrix displays you just have to use serial to parallel shift register (such us 74ls164) for data (spent 2 pin) and control the common using another pin.
Re: Dot matrix displays you just have to use serial to parallel shift register (such us 74ls164) for data (spent 2 pin) and control the common using another pin.
Jan 4, 2008 #5 Q quoc_thaibk Newbie level 2 Joined Dec 20, 2006 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,288 Dot matrix displays u should use 74HC595 is better than 164 cause 595 has the latch on it.