Quote:
Originally Posted by redshift
I have a Spektrum, so that's good news, thanks jhautz.
I'll definetely take a potential pack to pack imbalance over a potential 2 hundred dollar bill for toasted radio bits.
As I said I'll be running about 10 leds and either 2 or 3 fans off the other pack, shouldn't be far off as I only have one 128 oz steering servo and one 80 oz shifter servo, and that's intermittent enough to where it doesn't really count much.
Are you sure about 9.6 on the receiver tho? That sounds way high......
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Figure about 15mA per LED (up to 25mA for high brightness ones), and around 100mA per fan. That's 0.45A total being conservative (15mA X 10 LEDs and 100mA X 3 fans). Figure average of around 1A for both servos together (bursts will be higher). So, that's 1.45A.
If I were you, I'd put some of those LEDs in series. Each "string" will only take 15-25mA, so that's better right off. Depending on the battery voltage and brightness/color of the LED, you may only need two or three strings instead of 10 individual strings. Then, get the appropriate resistor for each string and tie them direct to your full battery pack.
Then, use 12v fans instead direct to the battery, maybe use a linear regulator configured for 13v if you're using higher than 4s. 12v fans use much less current than their 5v counterparts for a given airflow.
Both of these suggestions will remove the ~1/2A load from the BEC.