| ??? 06/02/03 22:09 Read: times |
#47298 - RE: reading the weight from a bathroom scale Responding to: ???'s previous message |
A very simple mechanism I have seen is just a perforated disk, which is turned by a gear and monitored by two photodiodes. The wider the disk rotates due to the weight, the more pulses are count by the controller. Two photo diodes are necessary to detect the direction the disk spins. |



