# 128x64 LED matrix with 74HC254 and ICND2153AP looking for settings **URL:** \ **Category:** Uncategorized\ **Created:** [March 19, 2023, 7:44pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/128x64-led-matrix-with-74hc254-and-icnd2153ap-looking-for-settings/640 "2023-03-19T19:44:14Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![roadfox](https://avatars.discourse-cdn.com/v4/letter/r/9de053/32.png) [@roadfox](https://rpi-rgb-led-matrix.discourse.group/u/roadfox)\ **Post date:** [March 19, 2023, 7:44pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/128x64-led-matrix-with-74hc254-and-icnd2153ap-looking-for-settings/640/1 "2023-03-19T19:44:14Z")
I have access to this matrix ![IMG_20230319_161703](https://global.discourse-cdn.com/free1/uploads/rpi_rgb_led_matrix/original/1X/77f2e73b96ee55a21a76dd426870cc6d01735cb8.jpeg) The Print is labeled: GC-P2.5-16S-1415-128x64-V1.1 It has 4 x 74HC254 and 8 x 10 chipone ICND2153AP Ic’s mounted The connector is labeled like this R1 G1 B1 GND R2 G2 B2 GND A B NC NC CLK LAT OE GND I have it connected to a rasperry pi zero W and powered with 4V (tried also with 5V) because i have no level shifter available atm. No matter what settings i try, it stays all black. Double checked the cabling several times, and was reading allot and trying many options without success. The matrix is drawing 262mA when Idle and 280mA whe i run demo -D 0 with varing parameters Is there a chance i can get dis matrix to run? would be cool as i have access to allot of them. What parameters should i try, is maybe level shifting mandatory with this panel? ---
**Author:** ![k7bbr](https://avatars.discourse-cdn.com/v4/letter/k/4bbf92/32.png) [@k7bbr](https://rpi-rgb-led-matrix.discourse.group/u/k7bbr)\ **Post date:** [April 27, 2023, 2:15am UTC](https://rpi-rgb-led-matrix.discourse.group/t/128x64-led-matrix-with-74hc254-and-icnd2153ap-looking-for-settings/640/2 "2023-04-27T02:15:13Z")
I have a similar panel using the ICND2153AP chip and get the same issue. Nothing lights up no matter what settings on an Adafruit RGB matrix HAT. Only difference is mine has E address lines. Would love to get them to work also. Price is quite nice compared to other panels. ---
**Author:** ![marcokreeft](https://avatars.discourse-cdn.com/v4/letter/m/7c8e57/32.png) [@marcokreeft](https://rpi-rgb-led-matrix.discourse.group/u/marcokreeft)\ **Post date:** [April 28, 2023, 2:38pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/128x64-led-matrix-with-74hc254-and-icnd2153ap-looking-for-settings/640/3 "2023-04-28T14:38:48Z")
This the mapping that is working for me. But I have the 64x64 panel ![image](https://global.discourse-cdn.com/free1/uploads/rpi_rgb_led_matrix/original/1X/df932eaa6e4fae87d86d78bcdc3197fb2bbf3cc1.png) ---
**Author:** ![ccombs](https://yyz2.discourse-cdn.com/free1/user_avatar/rpi-rgb-led-matrix.discourse.group/ccombs/32/314_2.png) [@ccombs](https://rpi-rgb-led-matrix.discourse.group/u/ccombs)\ **Post date:** [June 19, 2023, 9:51pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/128x64-led-matrix-with-74hc254-and-icnd2153ap-looking-for-settings/640/4 "2023-06-19T21:51:09Z")
Hey, do you have any more info about your 64x64 ICND2153AP panels? I bought five from an ebay seller and am trying to get them working. it almost seems like the OE pin is wrong–by default they stay black but if I unplug it (letting the pins float) it eventually begins to light up. Then they are lighting up with default settings in a 4x4 checkerboard pattern. I’ve tried all the combinations of rpi-rgb-led-matrix settings AFAIK. The pinout you provided is helpful but I’d love to see the device-side pinout if you can – my panel is sealed on the back and the matrix pinout is unlabeled… Grateful for any help you can offer.