Think I ‘bricked’ my arduino uno. I’m a newbe and I succeeded in getting my first project working ( solenoid actuated by modified Blink.pde sketch). However, I tried to use a multimeter to measure the voltage on my breadboard and I managed to power off my PC. My test leads must have transmitted the stored current from the solenoid.
After powering up my laptop, I hit the uno’s reset button. Uno's On LED is green. P13 LED does not blink. Also, the arduino uno will not respond to the previously successful solenoid.pde nor blink.pde. Initially, the chip on the arduino is very hot to the touch. The message I receive when trying to upload blink.pde to uno is: java.lang.NullPointerException at processing.app.debug.Compiler.execAsynchronously(Compiler.java:299) at processing.app.debug.Compiler.compile(Compiler.java:182) at processing.app.Sketch.build(Sketch.java:1515) at processing.app.Sketch.exportApplet(Sketch.java:1555) at processing.app.Sketch.exportApplet(Sketch.java:1524) at processing.app.Editor$DefaultExportHandler.run(Editor.java:2293) at java.lang.Thread.run(Thread.java:619) A second upload, results in no errors & uno's RX/TX led’s blink to indicate communication. However the P13 LED which is supposed to blink is not blinking.
I ran the loop back test. Result is RX LED on Uno blinks; but nothing is echoed back to Serial Monitor.
How can I determine if my Uno is bricked? Is it possible the bootloader is corrupted? If it’s a hardware issue, Is it possible to identify & replace the damaged component? Thanks, Steve Win 7 x64