Good morning Thank you Howard for your answers. I will slow down the I2C bus. Can I go down as low as 10 or 20 Hz ? is there a minimum frequency specified ?

One problem resolved ! The Weather Charts are now correctly displayed once I have cleared the browser (Firefox) cache... Now it is time to tackle the I2C bus sensors problem ! Thanks a lot Howard for

An interesting extract from a forum : "The insane sounding lengths like 10, 25, and 100m are perfectly possible, and I use the method often (with UART not I2C, but the method stands) when I need to pu

I forgot to join a picture :

Goodnews !!! I opened OCS web page from another computer in my home and Weather chart is OK !!!! software is Firefox on both computers... I will clear the cache tomorrow morning on the "faulty" comput

I have run the following sketch to test the SD card communication (copied from internet) : #include <SPI.h> #include <SD.h> File myFile; String buffer; String filename = "test"; void setup() { Serial.

I have inserted another SD card (8 Gb reformatted) with Chart.js placed in the root directory, but no change : Weather charts are empty. New : I now have a file written on the SD Card : But if I open

The length of the I2C cable is more around 30 m...

I have inserted a 16 Gb SD card. May be it is to much ? Up to now, no file is written on the SD card, which only contains Chart.js. Also what is the maximum length of cable for the i2c bus ? Can the b

Good morning, Status of this morning : There are still reboots, even with the the relays HIGH (i.e. no 220 V AC current transiting the output terminals of the relay). Let me make it clearer : switchin

When the relays are HIGH (220 V AC in Open Circuit at the relay ouput terminals) the system is stable : no reboot in more than 88 minutes). See screen copy : I let it in this state for the night and w

Hello everybody Thanks Howard for your efforts: I downloaded the latest OCS version 2.33, and set it up for my observatory with my basic configuration in config.h with no Weather function : OK as 1. p

Sorry Howard, I should not have gone so quick, I have to amend the picture... Soon after having sent this last message, I realized that the Web page displayed on my screen was in fact frozen... No upd

Last update for today @ 16:30 h UT: Good point for me : I think I have found the cause of the instabilities and cured them. Bad point for you Howard : It seems to be the latest version of OCS (2.31).

Sorry I was wrong in my last post : the Basic configuration that is OK and perfectly stable is with OCS version 2.1c. I did'nt update it because it is operating perfectly.

Update of 18th of April 2021: Starting point : OCS version 2.31. Basic configuration : Roof control function + Power relays control function. Operates perfectly in particular the relays operate perfec

Some update after further testing : I tried to put SQM OFF in config.h : no success : frequent reboots whatever the status of the 2 power relays (On or Off). No visible sign of these reboots when the

Good morning Howard the problem is that if I turn off the Watchdog the OCS web page fails and freezes... I had no relay problem at all with my previous configuration and the same relay wiring (8xrelay

Hello, I have used OCS up to now with success with the Roof and Power functions only. I was able to activate 2 relays for the 12 V power supply of the telescope mount and accessories, and for the 220

I have made the modification and it works as I wish now. Thanks