I'm looking at a project to connect a sensor (Sick DT50 Hi P2113) with connections as per the attached image to an Arduino. I guess this is the solution: http://arduinoforgoodnotevil.blogspot.ca/2012/04/how-to-connect-4-20ma-sensor-to-arduino.html, but both my electronics knowledge and programming knowledge are non-existent, so I'm looking to pay someone if possible to help me get this sorted.
Thanks in advance
It's good to say what part of the world you are in. It's hard to work on hardware from thousands of miles away.
Thanks for the reply, I'm in Australia. I'm more looking for someone to tell me what goes where, rather than to physically wire it up though, if that helps at all.
I'm not an Arduino expert, but I am a sensor expert... so maybe we can team up...
Power the sensor:
Connect L+ to some positive voltage source. It likes 24V.
Connect M to ground or 0V of the power supply.
It is a laser, so it does take some current. If it doesn't light up the laser, you probably don't have a big enough power supply. Scrounge around for a 10 or 30V DC wall wart and cut the end off...
For the analog 4...20mA ouptut, ignore the other wires other than QA. Q means "output" and A is "analog". This is the output current from the sensor that varies based on the distance to the target. The current loop is completed back through the power supply ground (M). If the arduino can take current input, then stick QA in the analog current input hole. If it takes voltage, and can handle up to 10V, connect QA to a 200ohm resistor and the other end of the resistor into the voltage input hole. Please verify these current and voltage levels are within spec for your board... I have absolutely no idea what it's limitations are.... maybe someone else can chime in.