Ismael Ittner

> Try using this: > > ``` > #define CHANNEL 1 > > for (uint8_t i = 0; i < 9; i++) { > if (i != CHANNEL) { >...

Hello Nitti, > Hello, first of all as a simple tip to help isolationg the problem I'd suggest to make sure there are no `SerialPortPrinter`/`USBPortPrinter`/`DirectParallelPortPrinter`/`ShiftRegParallelPortPrinter` declarations other than your `SerialPortPrinter...

My experience: just put a p.ln() **right before** p.image(_filename_) and solved for me... hope it helps someone.

In my case, I was using a new printer from Bematech and it works good...but when I try to print in a new EPSON TM-T88V the problem occur. I think...

Update: now I have all authorizations in my key file on the MacOS keychain. The error now is `failed: Error in connection establishment: net::ERR_CERT_COMMON_NAME_INVALID`, but my hostname is the same...