Hi! Not sure if this is my first post, so firstly thanks to all of you that make possible this amazing forum!
I´ve been trying to make an arduino project (Therething) based around 2 URM37 V3.2 Ultrasonic sensors. The hardware is very simple and basically it sends MIDI data when Distance is recieved from the two sensor, uses a 20x4 LCD screen, an encoder with push button and 2 led´s.
The project: http://www.buildbrighton.com/wiki/Therething
The library: https://github.com/milesburton/URM37
I have to thank one of the guys responsible of the project, he helped me a lot, but is momment for me to ask here as he no longer have the old hardware. When If first saw the project (1,5 years ago) I downloaded the sketch and schematic, but I didnt started puting all together untill 3 months ago. Now the project has changed, and they are using HC-SR04 sensors, and a slightly different setup and code.
I decided to stick with the old design, as I bought already the URM37, not cheap at all, and they work better. So... I tuned the sketch a bit and Ive got almost everything working, the sketch compiles in Arduino IDE1.x, but I just get response from one of the sensors. They both work by themselves, I can swap pins and they will react. The sensor that works send Midi out correctly.
I´ve tryed different things, firstly the old Sketch used to include "NewSoftSerial", I had to swap this to "SoftwareSerial" as its included in Arduino 1.x. I´ve noticed when downloading the URMSerial Library (URM37 sensor library) that some versions include a modified version of "SofwareSerial" and the old versions one of "NewSoftSerial"... so maybe my problem resides somewhere here... I also noticed there are different versions of this Library around, and not sure which one is the right one for me.
Hope somebody can help me out! Thanks in advance. Julian