Optoisolator U2

@stuart, can U confirm please, if the optoisolator U2 in controller board is a HMHA2801 ?
i think i burn mine, is for that I don´t have communication between the modules and the controller board !!

That one does work, more recent boards swapped to EL3H7(B)(TA)-G

datasheet

LCSC stock code: C32565

You can swap to this one without any problems.

1 Like

I can´t find this in ebay (europe) china now is more 60 days :frowning:
U know where I can buy this in EU ?

thanks

Digikey? 204,529 In Stock

(https://www.digikey.co.uk/product-detail/en/everlight-electronics-co-ltd/EL3H7-B-TA-VG/1080-1197-1-ND/2675931)