
MovieMaker

OK, I have my new little trash bot up and running. I have the Movement Panel working fine thanks to Rich and the other guys. I have tested the ports going to the eyes and they work fine. I have used a battery to test the eyes and they work fine. But, when I plug the eyes into the port, they do not light up.
Now, these eyes were made up of a series of LEDs that where on a Reel. You know, the flat type that you get on a reel.
I am giving the EZB +12vdc. But, of course at the ports there is only +5vdc that is going to the LEDs from the EZB.
Thank You guys for helping me.
Alan
Alan
So, battery Vcc to the LED strip. LED strip to the collector of the transistor. Emitter of the transistor to the common ground. Signal from the digital port to a 1k resistor, the other side of the resistor to the base of the transistor. Set(DigitalPort, On) to enable and Set(DigitalPort, Off) to disable.
All is working well now.
Here is the circuit I used to drive the 3 LED strip that forms my EZ Wilber's mouth:
If you are driving a LED strip, no other resistors are needed. (They are in the strip.)
The ULN2003A Darlington driver is the equivalent of 7 TIO120/TIP122 circuits.
A data sheet is at: http://www.ti.com/lit/ds/symlink/uln2003a.pdf
HIGH-VOLTAGE, HIGH-CURRENT DARLINGTON TRANSISTOR ARRAYS
FEATURES
500-mA-Rated Collector Current (SingleOutput)
High-Voltage Outputs: 50 V
Output Clamp Diodes
Inputs Compatible With Various Types of Logic
Relay-Driver Applications
You can also use a small 5v relay like this.... plug and play for the ezb...5V relay
Alan
Yes it is. I used 1 of them to drive 4, 20 LED strips on my quadcopters.