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PRASHEED this is not the problem with Crystal and DS 1307 chip, I am also facing this same problem.when I run this clock with internal battery (without getting display) the time is perfect, when i connected to a usb (5volt) power supply clock gains 24 minute / day. I am searching a solution for this, if any one can help me please do.

2018-08-25 09:43:33 Pomocny (0)
odpowiedzi (5)

Q: what type of display is dot matrix

zapytał deepak_6260 na 2018-08-24 01:18:25

PRASHEED Yes this is a dotmatrix display. each module having 5 hotizontal and 7 vertical led (5x7) like that 3 module, minimum working voltage is 3.5volt.

2018-08-25 09:37:25 Pomocny (0)
odpowiedzi (1)
PRASHEED 2018-08-02 11:38:55
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