Wireless digital scale

This scale is wireless. It may be useful where you can’t operate a normal scale, due to the weather outside, or if you don’t want to scare birds or other creatures away. With this scale you can weigh them. In this instructable, I used a 0 to 1 Kg load cell since I wanted to weigh hummingbirds and orioles that visited our nectar feeder. One end of the load cell was attached to the eaves, and the other end has a hook from which the support string for the feeder hangs. Many other load cells are available in different weight ranges, and they all can be hooked up the same way, the only difference being the zero factor and range factor which can be changed in the Arduino sketch.”