First post so I’ll say a quick howdy, name’s Sam from Aus, always been a tinkerer/hacker of things and am needing some if/else for my projects. So a few questions from the new guy (have watched a lot of video tutorials and done all the basic i/o tests with the board but have some specific questions I am wondering if someone could help me out with.
I have Moisture, Light and Temp sensors to control a couple of relays I have ordered (http://australianrobotics.com.au/products/twig-smart-relay) and also a couple of LEDS for error messages.
and if anyone guessed what it is…Its just another garduino project for now, however the idea is to build some custom PLC boxes for local farmers to use, coupled with a long range xbee they can control pumps and other orchard equiptment, etc.
I have attached the Fritzing Sketch below but my questions three be.
- Can I run 2 relays, 3 sensors and 2 LEDS of an arduino 5v rail?
- If not then I’ll use the second board in my sketch with a proper layout for the secondary power and 5v regulator + decoupling caps) So, will I need to bridge ground between the secondary relay board power and the arduino power?
- I purchased a LM335 (Z) Analog Temp. Sensor and for the life of me every wiring diagram I have found to hook this thing up to arduino with many different valued resistors my output is usually around -200C or 426Kelvin or some other really random number. Does anyone have a diagram and code they have seen online that they know works?
Again if you take the time to read, and or reply.
Garduino.fz (391 KB)