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Topic: 8x8 rgb matrix (Read 1 time) previous topic - next topic

ammygo

Hi, I bought 8x8 rgb matrix but I cant find datasheet how to connect to arduino.
Matrix number is GTM2088ARGB - 19. One side have 16 legs and other have 16 legs
Can any hellp me to find out what each leg means.
I want connect matrix with MAX7219CNG

fungus


Hi, I bought 8x8 rgb matrix but I cant find datasheet how to connect to arduino.
Matrix number is GTM2088ARGB - 19. One side have 16 legs and other have 16 legs
Can any hellp me to find out what each leg means.
I want connect matrix with MAX7219CNG


I typed "GTM2088ARGB" into google and all the information was right there.
Advanced Arduino

CrossRoads

You will need 3 MAX7219, one for each color.
You will also need a bunch of diodes, taking advantage of the '7219s Shut Down mode to multiplexe control of the common anode:

"When the MAX7219 is in shutdown mode, the scan oscillator is halted, all segment current sources are pulled to
ground, and all digit drivers are pulled to V+, thereby blanking the display."

With the anodes driven thru diodes, each 7219 can drive the common anode and not be impacted by the other 2 devices.
Assuming the -19 is similar to this part anyway
http://www.seeedstudio.com/wiki/60mm_square_8*8_LED_matrix_-_super_bright_RGB

You will have to do a little testing with your part, I am not seeing any -19 datasheets. Might just be slight color difference, or current draw.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

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