Required Hardware
This is a funny project that makes our plants “talk” to us. It’s very simple and you can create it in few hours. We use a sensor to read the soil moisture of our plant and a led matrix to dislay how the plant “feel”. You can use an ATtiny85 as a microcontroller.
Wiring Instructions
To wire your ATtiny85 to your Sensor and the MAX7219, connect the following pins:
- ATtiny85 Pin1 –> NC
- ATtiny85 Pin2 –> Sensor A0 (Analog out)
- ATtiny85 Pin3 –> NC
- ATtiny85 Pin4 –> GND
- ATtiny85 Pin5 –> MAX7219 DIN
- ATtiny85 Pin6 –> MAX7219 CS
- ATtiny85 Pin7 –> MAX7219 CLK
- ATtiny85 Pin8 –> +5V
- L78L05 Pin1 –> Output +5V
- L78L05 Pin2 –> GND
- L78L05 Pin3 –> Input from battery +9V
Don’t forget to connect all the GND together (Sensor, Attiny85, MAX7219). We suggest to connect and the two capacitors to your L78L05 (see the image on the right).
Recommended Software
- none
Πολύ ωραίο projectακι και αρκετά απλό. Βήμα προς βήμα οδηγίες που βοηθάνε!
Ίσως μια πλακετα τύπου breadboard να βοηθούσε περισσότερο τους αρχάριους.
Hi. How long does come battery last please? Thanks Don