Hello, I have an arduino 328 programmed and the project board deployed on site. There is some changes to be made to the arduino sketch, which is done on the host pc. My question is How do I upload the new sketch on to the project board? I dont have access to carry a laptop to the site I cannot di…

How to program an arduino without host pc & using arduino as handheld programmer

Erni February 6, 2013, 10:17pm 4

Nick Gammon has a description on uploading a hexfile from a SD card, and an Arduino.

Maybe this could be used with a LCD display and a buttun

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