- Thu Feb 16, 2006 1:31 pm
#9959
Hi all. I'm fairly new to the hooby electronics thing, with no electrical experience or engineering. Some would say it's a steep hill to climb, but I love a challenge. Case in point:
I'm trying to develop a mobile robotics platform. Nothing to fancy, just a CPU (atmega162), driving a couple of motors with PWM. In the past, I've used a two-battery design, one for the CPU, one for the motors, to prevent any power spikes or sinks from the motors starting up from frying, or resetting the AVR. (similar to the H-Bridge concept, but brutally simplified). I guess my question is: is there a better solution?
Details: I'm using a nokia 3.7Volt cell-phone battery to power each circuit. This provides more than enough power for my needs, when the drive circuit is seperated from the logic circuit, but is there a way to eliminate this second battery, say with a filter cap, inductor, or whatever? Ideally, I want to merge these two seperate power sources into a single one, even if it means changing up to a more powerful battery...
thanks!
I'm trying to develop a mobile robotics platform. Nothing to fancy, just a CPU (atmega162), driving a couple of motors with PWM. In the past, I've used a two-battery design, one for the CPU, one for the motors, to prevent any power spikes or sinks from the motors starting up from frying, or resetting the AVR. (similar to the H-Bridge concept, but brutally simplified). I guess my question is: is there a better solution?
Details: I'm using a nokia 3.7Volt cell-phone battery to power each circuit. This provides more than enough power for my needs, when the drive circuit is seperated from the logic circuit, but is there a way to eliminate this second battery, say with a filter cap, inductor, or whatever? Ideally, I want to merge these two seperate power sources into a single one, even if it means changing up to a more powerful battery...
thanks!