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The Lumazoid can support up to 180 LEDs, but no more. There is not enough memory to control 300 LEDs. Each LED requires 3 bytes of memory (one for each color).
As a one-person company, I get to make all the rules, and a great benefit is that I can treat the customers as well as I want to. I don’t answer to anyone or have to follow any silly policies!
Ok, that means that the connections of the RCA jacks themselves or the switch has a soldering problem. With the switch in overlay position, the input is just connected directly to the output. So check to see that the two contacts of an RCA jack are not shorted together somehow (check each one).
That is, the outside of the jack (ground) should not be shorted to the inside of the jack where the plug inserts (this is the signal).And with the switch in overlay, check to see if the signal connections on the RCA jacks (the insides) have continuity. When you move the switch to “sync only”, that should break the connection.
If the ground and signal of an RCA jack are shorted, try reflowing the RCA jack connections. Also check the 6 connections on your switch to make sure nothing is shorted. You can send me a picture of the bottom of the board so I can see the soldering.
If all else fails, I will send you a working Video Experimenter, but I want to give you a chance to solve this.
One thing I’m still not clear on: when you connect the VCR to board input, and board output to TV, and set switch to overlay, does the video signal pass through the board to the TV? Even with no Arduino, the signal should go through the board with no problem when the switch is in overlay position.
Sorry to keep asking, but this is a key question.
I would reflow as many solder connections as you can and try to ensure that the header pins make good contact with the Arduino. At this point, I think I should just send you a pre-built, tested replacement.
Ok, that means there must be a short on the video signal somewhere. Even with the Video Experimenter unpowered and unconnected to an Arduino, the video signal should go from input to output when the switch is in the overlay position. Does the signal go through with no power? That is, have you ever seen the VCR content on the output?
Ok, thanks for that info. I have found that the header pins that mate with the Arduino are a bit thin and sometimes make a poor connection, so you might try bending the pins a bit and seeing if that helps.
With the switch in overlay position, and jumper in V INPUT position, the VCR signal should be passed through to the output. Are you saying that the Video Experimenter interferes with the ability for the signal to pass straight through?
Regarding the capacitor, you should not find connectivity across a capacitor’s leads. Current does not flow through a capacitor once it is charged. So, you may find connectivity for a split second but once a cap is charged, current does not flow.
You have to provide more information. I don’t even know what program you are trying to run.
What kind of Arduino are you using? Please be specific.
Do you have a video source connected to the input? What are the settings for the sync select jumper and the output select switch?With the output select switch in the right position (“overlay”), the input signal is connected directly to the output signal so you should have the original video going through no matter what.
Ok, cool. An electret microphone will never be as good as a direct line connection, but it can work pretty well.
I have used this electret microphone: https://www.sparkfun.com/products/12758
Connect the 5V line to the 5V pad next to the input, connect GND to a 3.5mm plug ground connection (the sleeve), and connect the audio signal to both the tip and ring of the plug.
It works pretty well, but the audio signal is not as clean as a direct audio connection from an amplifier.
