Vela Navega Forum

hello,

Just installed a brand new NMEA4Wifi device las week-end in my boat.

I see erratic Seatlak1 to NMEA conversion, for example on depth.
Sometime the value is correct, sometime it is not.
Same for water temperature.
It's constantly switching between 3 or more different value, like 2.1, 1740, etc... 2.1 being the correct one (was in the harbour).

Attached is my wiring. I first tested with ONLY Seatlak (Port4) connected and had already the issue, thus this not linked to the complexity of wiring.

On the wifi side, I have a PC with Lubuntu (Linux) and OPENCPN on UDP port 2000 and dashboard plugin showing depth.

Firmware version is 4.4.
I have seen multiple fixes in other threads regarding Seatlak and version 2.5,2.6,2.7, etc...
Could it be a bad merge/fix/bug still in 4.4 ?
(I used to be a software developper earlier in my carrier, if I can have source code, I may help)

Hello,

Could you please send to my private email a photo of the PCB so that I can be sure what hardware you have. Since I started to offer both the TH and SMD versions earlier this year I changed the optocouplers that now are much faster. The new firmware (as 44) identifies the hardware it is running and use different timing to handle interrupts ( which are the base for SeaTalk input). As you are a programmer we can exchange information by email that will not confuse other users that read this forum. In the end we can write here a summary of our findings.

Regards, Luis

Bonjour,
J'ai le même problème avec l'entrée seatalk sur mon Nmea4Wifi TH Version.
Les données arrivent mais de façon très erratique ...
Un remède ? merci
Cordialement

Hello,

Long time I could not go to my boat, but finally could.

After testing, upgrading to firmware 4.9 resolved my problem !
(You have to disconnect all serial ports, not just seatalk to be able to upgrade via wifi)

Thanks to Luis !