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Old 02-18-2009, 04:16 AM   #410 (permalink)
motor_control
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I think that the first test you must doing with current limiting about 200 A - R2 obout 22 k

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Int Vref ATmega8 is low acurate:

Quote:
VINT Internal Voltage Reference 2.3-2.7 V and typ. 2.56 V
Table 103. "ADC Characteristics"
I recomend to use external one, from LEM HASS module - Vref 2.5 0.025 V

That is how.



For lowering voltage for ref 2.5 V ch. ADC0 and ADC1 must be shunted to GND pin 22 mega8 by 100 k resistors reffer my sch modes in page 20.

Last edited by motor_control; 02-18-2009 at 12:15 PM..
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