Serial Communication between Espruino - PIC16F628A

Thanks for attaching the picture though - it makes finding problems a
lot easier :)

Is this real? or are you kidding ? :)

Yes, I have only two wires RX and TX. But there is a red-small jumber on the PIC's board. This is VDD of PIC. I think you don't mean this, you mean a GND for Serial communication.