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Sometimes, character display problem.
OpenEVSE Support
There is no documentation to install the Adafruit. Most users go the simple route and upgrade the display with one we sell. The Adafruit product uses the i2c bus, you will need to Connect 5v to 5v, GND to GND, SCL to SCL, and SDA to SDA. Your LCD may have a second header for i2c where you can solder another set of pins.
Thanks for the informations, I bought it, and I will bought the Wi-Fi module from you. I trie to find the documentation about to install the Adafruit on my old display but nothing. Have you the pinout?
OpenEVSE Support
yes, you should be able to integrate this product. It has the same chip used in the color display.
Ok, is it possible to buy only the little timer board to addition it to my old display?
OpenEVSE Support
Yes, WiFi will work but you will not have all the features.
Temperature will not display and there will not be ant Temperature monitoring or throttoling
There is no clock chip (included in Color LCD), so you can not set the time or use station based Stop/Start timers
Christopher, can I use Wi-Fi Addon kit board with my old LCD mono version?
I don't have temperature sensor, only amp coil with my kit.
I don't have temperature sensor, only amp coil with my kit.
OpenEVSE Support
Yes, use the second I2C threw hole connector. Remove the two 47k resistors and add one standard resistor from 5v to SDA the other 5v to SCL.
OpenEVSE Support
Yes, R4 and R5 need to be replaced with 805 size resistors from 2.2 - 4.7K. This will make your LCD handle noise/corruption much better.
Chris
Do you need the back of the LCD yet?
OpenEVSE Support
Okay, that is a DC coil so no MOV is needed.
The controller looks a lot older than a v4. From the photos that looks like a v2. Is the LCD also older? There was one batch about 5 years ago that had 47k resistors on the i2c lines instead of 4.7k. This made them more sensitive to noise. Can you take a picture of the back of the LCD?
OpenEVSE Support
This is usually caused by Noise on the AC lines. Does your Relay have an AC coil? If so is there a MOV installed across the coil?
GuerrierSP
Hi all, I have V4 board with 40A relay with 3.11.3 firmware.
Sometime I have a display bug with my charger. You can see on the picture.
When this appears, the charger still working.
But one time last week, the charger stopped and I saw this bad things
Have you any idea about it?