Choosing AVR programmer

As we talked earlier, there are many AVR programmers to choose from. The simplest ones are bitbang programmers. These are straight forward programmers that can be built with as little components as few resistors (or no resistors at all). These can be COM, LPT or USB-to-TTL converter based. DIY Bitbang programmers Example of LPT port programmer These are probably simplest to build as there is no need to convert any signals coming from the port. Buffer chip is used only for safety reasons to protect computer port. Even simpler programmer cable can be found here. Continue reading