I'm thinking of building the DIY wiggler so that I can program and debug some LPC2103 chips on the cheap. I see the wiggler.txt schematic in the files area. It is using a 74AC244 chip to do voltage level conversion between the PC and the LPC21xx chip. It only seems to use 4 line drivers of the 74AC244 chip (half the chip is left unused). Would there be any problem with using a 74VHC08 quad 2 input AND gate chip instead? I would just tie one side of each AND gate high so that it can be used as 4 line drivers. This chip is cheaper and smaller than the 74AC244. The schematic also uses a DTC114 NPN transistor. I don't have any DTC114 transistors. Would MMBT3904 work okay instead? Any other tips for a DIY wiggler?
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Building DIY wiggler w/74VHC08
2006-01-16 by Ed Schlunder
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