- Mon Jun 06, 2011 9:52 pm
#128377
Finished building my project today, minus battery, and tried to program it using my usbtiny ISP (from adafruit). I first tried programming it using the 5v from the usb (using the jumper) but i got an error as if the chip couldn't be talked to. I then tried plugging in my usb connector and jumping the 5v directly to my mega328p chip. This worked and I was able to program the chip.
I placed an order for a 2000mah battery from here (thats what I designed my project to use) but had a question. I've got the following IC's in my system, and wondering if they might be drawing too much, and how to fix it:
Bluegiga WT-12 bluetooth module
3.3->5v boost IC
3.3<->5v level translator
3x LEDs
ATMEL MEGA328P ic
Is there a way that I can isolate the 5v from my programmer directly to the AVR, without having it power everything else on the 5v line? It may be a moot point once the battery arrives, as 2A should be more than enough current to power everything at once, but looking for a solution anyway.
I placed an order for a 2000mah battery from here (thats what I designed my project to use) but had a question. I've got the following IC's in my system, and wondering if they might be drawing too much, and how to fix it:
Bluegiga WT-12 bluetooth module
3.3->5v boost IC
3.3<->5v level translator
3x LEDs
ATMEL MEGA328P ic
Is there a way that I can isolate the 5v from my programmer directly to the AVR, without having it power everything else on the 5v line? It may be a moot point once the battery arrives, as 2A should be more than enough current to power everything at once, but looking for a solution anyway.
