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Forum: µC & Digital Electronics Wordclock stopped working


Wordclock stopped working
von Sasa D. (fibra)

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Hi everybody! My name is Sasha and this is my first post here.

As I understand this forum is English version of Mikrocontroller.net so 
it is very strange search found nothing about Wordclock project.

I have built myself this amazing clock based on PCB from Shapelabs: 
https://shapelabs.de/mechanisches/wordclock.htm
It was working fine few days than it freezes 2 times and finally stopped 
working. It is completely blank now or it have just 4 (minutes LEDs) on. 
LED test shows LEDs are fine. DFPlayer plays the sound manually. IR 
remote does not work.

Hooking it up on serial monitor it shows all parts are online but from 
web interface RTC, EEPROM and DFPlayer are offline!
LDR shows no values, DS1820 shows no temperature, time does not update, 
there are no Animations, it forgets change in settings I make after 
powering off. I have tried to update firmware and reset EEPROM, but no 
change.

1
Welcome to WordClock Logger!

2
----------------------------

3
irmp_init...

4
power_init...

5
power_init() called

6
power_on...

7
switching power on

8
delay_init...

9
board_led_init...

10
button_init...

11
timer2_init...

12
wpsbutton_init...

13
Version: 2.9.5

14
Hardware: STM32F103

15
Display: WC12h

16
LEDs: WS2812 GRB

17
rtc is online

18
eeprom is online

19
ws2812: external pullup detected

20
eeprom is online

21
current eeprom version: 0x00000000

22
updating EEPROM to version 0x00020900... done

23
DFPLAYER LOGGER

24
ESP8266 LOGGER

25
read rtc: Su 2000-01-01 00:00:13

26
read rtc: Su 2000-01-01 00:00:13

27
DFPlayer: SD card online

28
DFPlayer: query software version

29
DFPlayer: Version 0008

30
DFPlayer: set source device: 2

31
DFPlayer: set eq 0

32
DFPlayer: set volume 0

33
DFPlayer is up

34
dfplayer is online

35
esp8266 now up

36
(- setup UDP)

37
(- local port: 2421)

38
(- setup server UDP)

39
(- local port: 2424)

40
(FIRMWARE 2.9.5)

41
(- tables found; wc12h-tables-en2.txt)

42
(- check tables successful)

43
--> tabinfo<0d><0a>

44
(- connected to AP)

45
(AP crvenkapa)

46
(MODE client)

47
(IPADDRESS 192.168.1.104)

48
info: ip address = 192.168.1.104

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Re: Wordclock stopped working
von stefanus (Guest)

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Measure the Voltage on SDA and SCL lines, which should be 3,3V in idle 
state.

If not, then remove one I²C chip after the other and powercycle the 
device until the voltage is Ok.

If you removed everything but the voltage is still not 3,3V then a 
pull-up resistor is possibly not working or you have a short-circuit to 
GND.

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