In the arduino code set your WiFi credentials char wifissid[] = "ENTER YOUR WiFi SSID HERE"; char wifipass[] = "ENTER YOUR WiFi PASSWORD HERE"; Normally, the signal strength is displayed in dBm. But for a non techie person, the signal strength in terms...
The ESP-32 board pins operate in 3.3v levels while the Gravity pH and EC sensors operate in 5V. I inserted a simple voltage divider to shift 5v to 3.3v levels on the signal pins.
To build a tower you will need to print the 3D parts shown on the left of the image. The "Sensors float" part is optional, print it if you want to use the pH and EC sensors. You will need 12 times the part: "Basket". You can download the files...
To build a tower you will need to print the 3D parts shown on the left of the image. The "Sensors float" part is optional, print it if you want to use the pH and EC sensors. You will need 12 times the part: "Basket". You can download the files...
The sun tracking system consists of: 1. Two roller shutter/awning motors: These motors are industrial, easy to purchase, cheap, and with a high torque (10Nm being the lowest). Average price of each motor around 30€...
Now that i know how to access and decode the data lets try the Raspi GATTTOOL default BLE handler:Native to Debian and a lso to a bunch of linux distros or so i've heard of . First i reset the bluetooth of the raspi, just in case: sudo service bluetooth...
moThe big black device in the middle of the printed circuit board (PCB) is the speaker (aka buzzer, or transducer). You can see a little slit in the one side where the sound comes out. There is a back side to the circuit board that you cannot easily...
Flash the Arduino with the following sketch. This is also included as a file attached to the project. int last_level = 0; bool last_state = false; bool stable = false; int count = 0; const int cutoffs[198] = {/* 1*/ 833, 831, /* 2*/ 825, 823, /* 3*/...
Attaching a SensorIn order to attach a sensor, motor, camera or other component to the Redtree Hydra, the FPGA inside must be programmed. We know that this is normally a tricky task, so we created a tool to simplify it. The Redtree Hydra has four I/O...
Next we will prepare the water flow. I decided to use this combination of pump and tubing, because they fit without an adapter. Other combinations work also. Clear tubbing isnt the best solution, because algae will grow inside the tubes. you can prevent...
UV-C bulbs use a dab of mercury plus a glowing hot filliment in a low pressure tube of glass to generate ultraviolet light that peaks around 253.7 nano meters, the optimal germicidal wavelength in the UV-C part of the spectrum. Not to be...
Loading the Hook Code In order to use Joy232 it is necessary to load it on the MSX by either of the methods presented below.Method 1: Copy the file "joy232.bin" to a floppy disk (or an equivalent option like the SD Mapper interface. load and execute...
Share a SensorIf you want to see a complete example of sharing the sensor, check out the share a sensor app:svn co http://www.redtreerobotics.com/svn/redtree-apps/trunk/ redtree-apps cd redtree-apps/share_a_sensoror if you prefer git:git clone https://github.com/redtreerobotics/redtree-apps.git...