Hi All, just wanting to get my thoughts correct as im new to modifying the programming for Audrino based items. i know nothing about “sketches”, are these another name for firmware?
i have 3 Emontx V3’s ( got these before i knew about he IoTaWatt) all with EmonESP modules, all talking to my own EmonCMS server.
so i have about a 10% discrepancy in my voltage readings on my emonTX’s compared to what is actually there.
i have read the guide about calibration and comprehend what is needed to be changed and how to calculate and do so.
i think i need to get the usb to Uart programmer chip to upload a changed firmware source code for modified voltage corrections that i need to suit my 9v plug pack.
am i thinking right, or is there a way to update the EmonTx firmware via the EmonESP wifi cards?