Olin, you can speak about voodoo, ufos, politics or whatever you want... but that has nothing to do with this list. It's all about PIC nothing else. I do not understand why you ask me what I mean. You know it perfectly, you are not a 20 years old man, but sometimes you seem as of your responses. You are not in your first day working so, you know perfectly what I mean. It's "always" better to have a protection on each non-used pin than having nothing? True. Is it mandatory? Not. If you are experienced, mistakes like setting a pin connected to Vcc as an output, will probably not to occur. Not even updating a customer's board firmware. Are the resistors the only way to protect from a firmware mistake? No, there are many others. No need to be sarcastic about your customers boards. I never spoke about them nor told you to change them. Have you ever used a dead fish in electronics??? What sense has that to be with the post and the question from the original PO? If you consider my response is not clear enought, tell me. I will clarify. Respond with arguments silly, sarcastic and arrogant, just wasting our time, me and the listers. Sorry about that, Roger Weichert and all PIC-listers. 2009/9/16 Olin Lathrop > Here we go with the voodoo electronics, and a absolute statement for bonus. > So using a "protecting" (whatever that really means) resistor is *always* > better than any other alternative? > > I'll have to go back and tell my customer with the high volume > cost-sensitive electronic badge to stop making them immediately because the > design is incorrect. I'll need to make the PC board a little bigger to fit > all the resistors for the unused PIC pins (we used a 44 pin QFN package > even > though a 28 pin PIC was sufficient because the 44 QFN package was smaller > than any 28 pin package for that PIC type), the board will be a bit more > expensive because I'll need another layer or two to route the lines out > from > the PIC, and they'll have to make the case bigger too. I'm sure the > customers will be understanding when the badge is bigger, heavier, and > costs > more. After all, it *always* has to be done this way. It's not clear > though what exactly these resistor are supposed to be in series with. A > small piece of dead fish, I presume? Can you get those in 0402 or 0603 > packages? > > > ******************************************************************** > Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products > (978) 742-9014. Gold level PIC consultants since 2000. > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist