MovieMaker
Resolved by DJ Sures!
I got my head all back together and the neck, etc. I have a battery going through a 640 ohm resistor to a female extention plug. I plug this in to test the LEDs. Each one worked very good but one did not. I checked reverse polarity on the circuit and the LED worked. I did not want to take the head all apart again (hassel). So , I simply turned the plug around not realizing if i were hurting something or not. But, it did not seem that it would damage the EZB because I was simply swapping ground and signal. I can't see very well, I may have plugged a plug in shifting one pin over. that would connect ground to hot or signal to hot.
Anyway, boiling it down, All of my digital pins do not work anymore.
Any ideas? I am thinking voltage regulator blown, I hope it is not the cpu. I am going to run the test that D.J. has and try to figure it out. The lights blink red and blue and it connects up. So , the bluetooth is working.
Wish me luck.
Not ever seeing an EZB board in real life, myself.... VR1 and VR2 should be labeled... Grab a magnifying glass or get someone with good eyes to read what's stamped on them....
The writing on the chip is very very faint. But, someone has pointed out which chip is where for me, Bless them.
@rryerson, that's what I used to determine which component was mounted to VR1 and VR2.
@Mel, you were not clear if you had tried the LEDs on a known good supply/determined that the LEDs are in fact OK.
Either way, EZ-Robots will sort it out for you
Yes, Mr. Rich, I tried TESTED GOOD Leds and also servos. NOTHING on all ports. Just 1.5v-2.1v.
Now don't ask me why, but some of my ports are working again. I will test them all and report back.
I tested every digital port and analog port. And, guess what? They ALL are working correctly. I must've re-seated the cpu. That is the ONLY explaination that I can come up with. I used a servo to test the digital and made it move. Then I used a servo on the ADC ports and when I moved the horn a bar graph showed the move.
Thank you, Jesus! I am sooo happy. Sorry to have wasted all of you precious people's time. I guess the answer was re-seating the chip.
;)
I CAN'T BELIEVE IT! My problem is Back!
OK, I went through every port. It works with the servo. But, it won't turn a simple blue LED on and off. I test the little light on the battery connection and it works fine. But, not on the ezb. It is the same type of setup that I have used in several generations of robots. It is amazing. It is blowing my mind.