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user warning: Unknown column 'i18n.language' in 'where clause'
query: SELECT DISTINCT b.* FROM blocks b LEFT JOIN blocks_roles r ON b.module = r.module AND b.delta = r.delta LEFT JOIN i18n_blocks i18n ON (b.module = i18n.module AND b.delta = i18n.delta) WHERE (i18n.language ='en' OR i18n.language ='' OR i18n.language IS NULL) AND ( b.theme = 'garland' AND b.status = 1 AND (r.rid IN (1) OR r.rid IS NULL) )ORDER BY b.region, b.weight, b.module in /var/alternc/html/o/orangeseeds/usr/drupal-6/modules/block/block.module on line 456.
The resolution of the meter
The resolution of the meter is only 10 bits, but that's not enough to explain such a variation.
Why are you setting Vmax to 15 since your Vmax is 12.50V in reality? Try to set Vmax = 12.50.
Are you running it on a Arduino board or on your own circuit?