- Wed Feb 08, 2006 7:03 am
#9644
Hi all, I'm just getting started in hobbyist electronics, and trying to figure out how to use PICs and Atmegas, etc. I had a couple of newbie questions that maybe someone can help with...?
- I'm trying to put together ELMs desktop line follower (here). The schematic calls for an Atmega8, but only has a CR2032, 3.0V battery to power it. The Atmega8 data sheet says this chip runs at 4.5-5.5 operating voltage. I guess my question is: does this project make any sense? I've finished fabrication, but I'm having problems programming the chip (avrdude gives "no response"), and was wondering if this was the problem.
- I'm this close to pulling the atmega8 off the board, and replacing it with an atmega8L, which has lower operating voltage and speed. As I said previously, I'm just getting into this hobby, and I don't have a lot of money to spend on reflow ovens and the like. How can I, using a soldering iron, some braid, and whatever pins, needles and eyebrow tweezers I have lying around, remove this surface mount, 32-pin TQFP package without damaging the board? I also have a heat gun (for removing paint), but can't figure out how to use it for this, without melting all the solder on the board. I've looked everywhere for instructions on the internet, but can't find a solution that doesn't involve buying loads of additional tools/equipment. If anyone has any real-world experience, I'd love to hear it.
- I'm trying to put together ELMs desktop line follower (here). The schematic calls for an Atmega8, but only has a CR2032, 3.0V battery to power it. The Atmega8 data sheet says this chip runs at 4.5-5.5 operating voltage. I guess my question is: does this project make any sense? I've finished fabrication, but I'm having problems programming the chip (avrdude gives "no response"), and was wondering if this was the problem.
- I'm this close to pulling the atmega8 off the board, and replacing it with an atmega8L, which has lower operating voltage and speed. As I said previously, I'm just getting into this hobby, and I don't have a lot of money to spend on reflow ovens and the like. How can I, using a soldering iron, some braid, and whatever pins, needles and eyebrow tweezers I have lying around, remove this surface mount, 32-pin TQFP package without damaging the board? I also have a heat gun (for removing paint), but can't figure out how to use it for this, without melting all the solder on the board. I've looked everywhere for instructions on the internet, but can't find a solution that doesn't involve buying loads of additional tools/equipment. If anyone has any real-world experience, I'd love to hear it.