The Adafruit mini 8x8 LED displays arrived and I wired three of them up with assigned addresses of 0x70, 0x71, and 0x72. I could only get the first address to work. As soon as additional 8x8 units were plugged into the I2C buss connector locations on the EZB(4) and the address accessed, the small red led on the EZB(4) would turn on steady instead of flash like it should when commands are being sent using the new I2C 8x8 tool. Once the small red led turns on steady no I2C commands work.

Some additional procedures would be nice so that connecting to the I2C interface could be accomplished in the proper steps without introducing errors onto the buss.


Discovered that you only need a single instance for the 8x8 Animator. The second screen allows you to insert the address of the 8x8 module you want to send commands to. In other words you don't need multiple 8x8 animator controls for each address on the I2C buss.

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got mine today, any idea on the hook up? whats the pin layout on the v4 i2c? i need to make a cable for the 8x8 to connect need to know the polarity.


Here ya go Tony.

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You'll need a 4 pin JST and or adapter cable like the one used for the Array in JD's eyes... The pin outs are here in the ezb datasheet... EZB4 Data sheet

LOL you beat me to it @Doc...

It's only 4 wires @Anthony so it's pretty strightforward


Do you prefer the single color 8x8 adafruit display over the 18 RGB LED Block?


@ DJ Sures for non Revolution bots yes. the color is so bright. and they fit anywhere.
Thanks again for adding them to the EZ-Builder program. One question, as i was using them i noticed, after the first "INIT" button was pressed, if i went into the settings to change something i had to reset the v4 to get the control of the 8x8 back. am i missing something?

Here is the one eye set up as i ran out of Flux for the 2nd soldering job. Love it so far.

Thanks Robot-Doc and Richard R for quick assist.


You can take the 18 RGB LED Block out of the case Grin

Jeremie is designing a 8x8 with RGB's. It will blow the Adafruit one away.


@DJ Sures...Im looking forward to it.


@DJ Sures you mentioned Jeremie is designing an RGB 8x8 have you got an E.T.A. for it and will it have a case just asking because I don't need a case.