Overview
This sensor is very simple to use, you insert in into the soil and read the data. With this sensor in the right project, your plants can let you know when it's time to water them.
Features:
- Soil moisture sensor based on soil resistivity measurement
- Easy to use
- 2.0 cm X 6.0 cm grove module
Tech specs
|
Item |
Condition |
Min |
Typical |
Max |
Unit |
|
Voltage |
- |
3.3 |
- |
5 |
V |
|
Current |
- |
0 |
- |
35 |
mA |
|
Output Value |
Sensor in dry soil Sensor in humid soil Sensor in water |
0 300 700 |
- |
300 700 950 |
- |
Get Inspired
After becoming frustrated at his lack of archery skills and not wanting to spend an eternity practicing getting better, Shane Wighton (known as Stuff Made Here on YouTube) sought to build a rig that could automatically correct his aim for the perfect shot every time. The device is comprised of a rigid sleeve that fits over the wearer’s forearm, along with a pair of stepper motors that can adjust where the bow is pointing either vertically or horizontally via a rack-and-pinion. These motors are driven by an Adafruit microcontroller running CircuitPython and a couple of motor driver modules that provide the necessary current. But that's not all, he also created a small rig that uses an Arduino Uno and servo motor to autonomously fling targets into the air. Target tracking is achieved by having a set of eight OptiTrack cameras around the room monitor the space for tiny gray spheres, and through the use of a special triangulation algorithm, they can accurately determine where both the arrow is pointing and where the target is in 3D space. Initially, the system missed all of its shots due to poor software and the wrong kind of bow, so Wighton completely rewrote his program and switched to a compound bow instead. Once everything had been corrected, the software was able to predict where a flying target would end up according to its speed, and thus had the ability to intercept it. The Auto-Aiming Bow could also hit a target the size of a 3mm-wide circle with scary precision.
