10 in. circle scale

A scale built for growing.

Place a potted plant on the scale to monitor how wet or dry the soil is. Gain insights into the water movement through the grow. Tare (zero) points can be set to quantify soil conditions such as "too wet", "too dry" or "just right". 

Growbies scales are also useful for measuring harvests, soil and fertilizer. They can be used to track the fluid level in a vessel. Along with mass, ambient temperature is included in the data stream.

This scale is water spray and dust resistant for indoor and outdoor use. 

The scale is rechargeable via USB-C. 

Both the device firmware and the gateway software were written by Growbies and released as open source.

Specifications

• 30 kilogram (66 lb) capacity
• Operating temperature 0*F - 120*F (0*C - 50*C), thermally calibrated
• water-spray and dust resistant
• +/- 25g long-term accuracy*
• +/-5g short-term accuracy**
• USB-C
  
• open source firmware and gateway (source) (docs)
  
• rechargeable battery

* Here "long-term" means the given accuracy over time and temperature

** Here "short-term" means the given accuracy for a fixed temperature and time period less than 10 minutes.