# Help needed with 52x52 1/13 scan **URL:** \ **Category:** Uncategorized\ **Created:** [March 25, 2021, 12:57pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/help-needed-with-52x52-1-13-scan/177 "2021-03-25T12:57:28Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![JangSuKim](https://yyz2.discourse-cdn.com/free1/user_avatar/rpi-rgb-led-matrix.discourse.group/jangsukim/32/58_2.png) [@JangSuKim](https://rpi-rgb-led-matrix.discourse.group/u/JangSuKim)\ **Post date:** [March 25, 2021, 12:57pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/help-needed-with-52x52-1-13-scan/177/1 "2021-03-25T12:57:29Z")
sudo python3 runtext.py --led-slowdown-gpio=3 --led-cols=64 --led-rows=64 --led-brightness=50 --led-row-addr-type=3 --led-pixel-mapper Rotate:180 --led-multiplexing=1 > Hello, > First, I really appreciate your great work! > Second, I recently grabbed a LED Panel from the dumpster which has 52x52 pixels on there. I hooked it up like the HUB75 panels, but the mapping seems not to be right. > I need to skip 3 pixels every 13 horzontal pixels. > The shift register they used has 16outputs, but they left 3 outputs unconnected to have 52pixels in total. (same as in vertical rows, but I could easily change that in the code from 16 to 13) > what lines do I need to add/modify? class StripeMultiplexMapper : public MultiplexMapperBase { public: StripeMultiplexMapper() : MultiplexMapperBase(“Stripe”, 2) {} void MapSinglePanel(int x, int y, int \*matrix\_x, int \*matrix\_y) const { const bool is\_top\_stripe = (y % (panel\_rows\_/2)) \< panel\_rows\_/4; //x=x+3; if (x \>= 14) { x=x+3; } if (x \>= 30) { x=x+3; } if (x \>= 46) { x=x+3; } if ( x\>63) { x=0 ;} ``` *matrix_x = is_top_stripe ? x + panel_cols_ : x; ``` \*matrix\_y = ((y / (panel\_rows\_/2)) \* (panel\_rows\_/4)+ y % (panel\_rows\_/4)); } }; x 좌표는 성공!! y 실패 x ---
**Author:** ![marcmerlin](https://yyz2.discourse-cdn.com/free1/user_avatar/rpi-rgb-led-matrix.discourse.group/marcmerlin/32/40_2.png) [@marcmerlin](https://rpi-rgb-led-matrix.discourse.group/u/marcmerlin)\ **Post date:** [March 27, 2021, 3:12am UTC](https://rpi-rgb-led-matrix.discourse.group/t/help-needed-with-52x52-1-13-scan/177/2 "2021-03-27T03:12:58Z")
OMG, that is a very weird size, I didn’t even know those existed. To be honest, I think you’re going to be on your own for those. I haven’t seen @hzeller in a while, he’s likely busy with work work, but honestly without having the same panels as you have, it’d be a bit time consuming to write drivers remotely. But it’s a good opportunity for you to learn, good luck 😉 ---
**Author:** ![JangSuKim](https://yyz2.discourse-cdn.com/free1/user_avatar/rpi-rgb-led-matrix.discourse.group/jangsukim/32/58_2.png) [@JangSuKim](https://rpi-rgb-led-matrix.discourse.group/u/JangSuKim)\ **Post date:** [March 27, 2021, 3:44am UTC](https://rpi-rgb-led-matrix.discourse.group/t/help-needed-with-52x52-1-13-scan/177/3 "2021-03-27T03:44:31Z")
make text-scroller sudo ./text-scroller -f …/fonts/Medium32.bdf -C0,255,0 -B0,0,0 -O255,255,255 --led-show-refresh –led-chain=1 --led-slowdown-gpio=3 --led-cols=64 --led-rows=64 --led-multiplexing=1 –led-brightness=100 --led-row-addr-type=3 -s0 -y-0 -x0 “한글출력” //### 18 new mapper class Stripe52x52 : public MultiplexMapperBase { public: Stripe52x52() : MultiplexMapperBase(“Stripe52x52”, 2) {} void MapSinglePanel(int x, int y, int \*matrix\_x, int \*matrix\_y) const { const bool is\_top\_stripe = (y % (panel\_rows\_/2)) \< panel\_rows\_/4; if (x \>= 14) { x=x+3; } if (x \>= 30) { x=x+3; } if (x \>= 46) { x=x+3; } if ( x\>=63) { x=0 ;} \*matrix\_x = is\_top\_stripe ? x + panel\_cols\_ : x; //---------------------------------------------------------------------------------------- \*matrix\_y = ((y / (panel\_rows\_/2)) \* (panel\_rows\_/4)+ y % (panel\_rows\_/4)); //----------------------------------------------------------------------------------- } }; // y line ??? 새로운 매핑을 만드는 중입니다. y 매핑에 대한 감이 안옵니다. (Creating a new mapping. I can’t get a feel for the y mapping.) X line 매핑은 13번 이후에 3씩 추가 했습니다. (X line mapping was added by 3 after number 13.) : 😓 ---
**Author:** ![JangSuKim](https://yyz2.discourse-cdn.com/free1/user_avatar/rpi-rgb-led-matrix.discourse.group/jangsukim/32/58_2.png) [@JangSuKim](https://rpi-rgb-led-matrix.discourse.group/u/JangSuKim)\ **Post date:** [March 30, 2021, 9:45am UTC](https://rpi-rgb-led-matrix.discourse.group/t/help-needed-with-52x52-1-13-scan/177/4 "2021-03-30T09:45:31Z")
//### 18 class Stripe52x52 : public MultiplexMapperBase { public: Stripe52x52() : MultiplexMapperBase(“Stripe52x52”, 2) {} void MapSinglePanel(int x, int y, int \*matrix\_x, int \*matrix\_y) const { ``` if ( y >= 13) { y=y+3;} if ( y >= 29) { y=y+3;} if ( y >= 45) { y=y+3;} ``` const bool is\_top\_stripe = (y % (64/2)) \< 64/4; if (x \>= 14) { x=x+3; } if (x \>= 30) { x=x+3; } if (x \>= 46) { x=x+3; } if ( x\>=63) { x=0 ;} \*matrix\_x = is\_top\_stripe ? x + panel\_cols\_ : x; //---------------------------------------------------------------------------------------- if (y \> 63 ) { y = 0;} \*matrix\_y = ((y / (64/2)) \* (64/4)+ y % (64/4)); //----------------------------------------------------------------------------------- } }; I was successful today. 😀 ---
**Author:** ![JangSuKim](https://yyz2.discourse-cdn.com/free1/user_avatar/rpi-rgb-led-matrix.discourse.group/jangsukim/32/58_2.png) [@JangSuKim](https://rpi-rgb-led-matrix.discourse.group/u/JangSuKim)\ **Post date:** [March 31, 2021, 11:41am UTC](https://rpi-rgb-led-matrix.discourse.group/t/help-needed-with-52x52-1-13-scan/177/5 "2021-03-31T11:41:57Z")
![21-03-30 18-42-14 1303](https://global.discourse-cdn.com/free1/uploads/rpi_rgb_led_matrix/original/1X/51a118efe3be09938910a24be241cc503822ed2a.jpeg) //## 1Stripe → 18 Stripe52x52 수정 //### 18 class Stripe52x52 : public MultiplexMapperBase { public: Stripe52x52() : MultiplexMapperBase(“Stripe52x52”, 2) {} void MapSinglePanel(int x, int y, int \*matrix\_x, int \*matrix\_y) const { ``` if ( y >= 13) { y=y+3;} if ( y >= 29) { y=y+3;} if ( y >= 45 ) { y=y+3;} ``` const bool is\_top\_stripe = (y % (panel\_rows\_/2)) \< panel\_rows\_/4; if (x \>= 14) { x=x+3; } if (x \>= 30) { x=x+3; } if (x \>= 46) { x=x+3; } if ( x\>=63) { x=0 ;} ``` *matrix_x = is_top_stripe ? x + panel_cols_ : x; ``` //---------------------------------------------------------------------------------------- if ( y \> 63 ) { y = 0; } else { \*matrix\_y = ((y / (panel\_rows\_/2)) \* (panel\_rows\_/4)+ y % (panel\_rows\_/4)); } //----------------------------------------------------------------------------------- } };