Modular clock issue

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2 months 2 weeks ago #12639 by roadrune
Replied by roadrune on topic Modular clock issue
Ok, thanks.

I can see that Ians last login was 5 weeks ago...

To use it as an offline clock, do i need to remove the wifi module?

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2 months 2 weeks ago - 2 months 2 weeks ago #12640 by BS_Jim
Replied by BS_Jim on topic Modular clock issue
It shouldn't be necessary to remove the WiFi module to use it offline. You could just unplug it from the level-shifter if you want, though.
Last edit: 2 months 2 weeks ago by BS_Jim.

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2 months 2 weeks ago #12641 by Ty_Eeberfest
Replied by Ty_Eeberfest on topic Modular clock issue

roadrune wrote: Ok, thanks.

I can see that Ians last login was 5 weeks ago...

To use it as an offline clock, do i need to remove the wifi module?


Well, he owns this site so he has to drop in some time! I do see that he has posted a message on the store site that says he's away on vacation until the 16th of this month though.

Look into it later when the dust is clearing off the crater.

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2 months 2 weeks ago #12642 by Ty_Eeberfest
Replied by Ty_Eeberfest on topic Modular clock issue
As far as what could be wrong, I can give you generalities but I don't have any great specific ideas. General possibilities include...

Corrupt WiFi module firmware - doubtful since the module is still serving web pages.

Hardware failure on WiFi module - maybe but it seems kind of strange that just the I2C interface would fail

One of the surface mount MOSFETS that perform level shifting of I2C signals failed - this is probably the most logical place to look for a failure. If you have a scope you could look at the SDA and SCL lines at the clock's microcontroller and on the WiFi module.

SDA ans SCL pins of clock microcontroller - making good contact in socket? Solder okay? Traces around those pins look okay?


For reference (see also schematic in construction manual)
Clock Microcontroller: SDA is Pin 27 and SCL is Pin 28
ESP=01 WiFi Module: SDA is Pin 5 and SCL is Pin 3


Maybe this will be useful. Or not.

Look into it later when the dust is clearing off the crater.

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2 months 2 weeks ago #12643 by roadrune
Replied by roadrune on topic Modular clock issue
I am quite shure it would be helpful if i understood it :dry:
I do not have a scope, nor the ability to search for errors in electronics, unfortunately.

Is it likely that a new wifi module would fix it?

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2 months 2 weeks ago #12644 by Ty_Eeberfest
Replied by Ty_Eeberfest on topic Modular clock issue
Replacing the WiFi module with no troubleshooting has a 50/50 chance of fixing it. However, if you order a new WiFi module you will need to let Ian know you need Firmware 356. WiFi modules now ship with newer firmware by default, which would be incompatible with your clock.

Look into it later when the dust is clearing off the crater.

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