There's an arrow? (looks carefully).
A new ATMEGA328 needs to have the bootloader loaded before it will accept sketches. I dont understand why. A blank PIC chip can be programmed with a Hex file.
If you purchase 'blank' PIC chips they will not work in the PICAXE system, as they do not contain the PICAXE firmware. Therefore always buy pre-programmed 'PICAXE chips'.
From that:QuoteIf you purchase 'blank' PIC chips they will not work in the PICAXE system, as they do not contain the PICAXE firmware. Therefore always buy pre-programmed 'PICAXE chips'.So the PICAXE also needs a bootloader before it accepts sketches, via the serial port. In both cases you can use the ICSP to upload things (including the bootloader). In both cases, once you have the bootloader you can upload further sketches via the serial port.
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