There are numerous approaches to measure plant well being, and we have witnessed several tasks producing open up-source remedies. Just one we have not viewed is a dendrometer, which entails measuring a variety of bodily dimensions of trees to monitor their well being and development. [John Opsahl] is changing this with the OpenDendrometer, a device for monitoring the diameter of tree limbs and fruit.
Small adjustments in diameter choose area throughout the working day, and monitoring these variations will allow deviations to be detected, which can be a indicator of drinking water anxiety. Around months and months, these measurements can be applied to measure expansion and fruits’ progress to harvest. [John] located that a electronic tire tread depth gauge can operate effectively for this application. Several of these gauges use the exact electronics as the low cost digital calipers, for which the serial protocol was reverse engineered far more than a decade back. The OpenDendrometer connects the tire depth gauge to a microcontroller by way of a 1.5V level shifter, which logs measurements to an SD card whilst applying a DS3231 RTC for accurate timestamps. The RTC can also be used to wake up the circuit at the needed intervals to conserve battery power. For the preliminary proof of notion [John] is utilizing an Arduino Professional Mini, but plans to move to an ESP32 at a later phase to permit wi-fi info transmission.
Anything will be housed in a 3D printed enclosure with a foam cord gasket to make the unit weather conditions resistant. A mounting rod on the outside the house of the enclosure with adjustable thumbscrews makes it possible for the OpenDendrometer to be connected to any element of the tree. We system to retain an eye on this challenge and look forward to seeing the facts it creates.
For the other approaches of measuring plant well being, we’ve protected every little thing from soil dampness to Normalized Distinction Vegetation Index and even plant pounds and even pot plant body weight.