With the PS08 it is possible to build an exclusively solar-driven weight scale based on strain gage technology.

PS081 Solar Body Weight Scale- With Revised Power-Up Circuit

Original PS08 Construction for Solar-Driven Scales

The gain and offset drift is only one part of the error of a weigh scale. Another part, significantly bigger part, comes from the load cell itself. PICOSTRAIN improves the behavior of the load cell rendering more precise measurement than traditional solutions. This White Paper explaines precision adjustments.

How to Lower Gain and Offset Drift of a Load Cell