clock7
Newbie level 4
outdoor led matrix
I am making an outdoor LED display system using matrix LEDs. I already have made an indoor system but am not sure if the outdoor system has the same circuitry or not.
Attached is the basic circuit diagram for my indoor LED system, please tell me what components I need to replace to convert this system into an outdoor one. Specifically I want alternatives to the following components in the outdoor system
1. T1: B772 Transistor driving the rows (can it sustain the current requirements of the outdoor matrix ?? )
2. Resistors: How will the values of R1,R2 and R3 change??
3. IC1: ULN2003A, do I need a different current sink IC for the outdoor model ??
As you see in the second picture the outdoor matrix I plan to use is also 8x8 (has 4 outdoor LEDs in each pixel). Please tell me the part numbers that I should replace my existing components with. Any help will be appreciated.
Thanks
I am making an outdoor LED display system using matrix LEDs. I already have made an indoor system but am not sure if the outdoor system has the same circuitry or not.
Attached is the basic circuit diagram for my indoor LED system, please tell me what components I need to replace to convert this system into an outdoor one. Specifically I want alternatives to the following components in the outdoor system
1. T1: B772 Transistor driving the rows (can it sustain the current requirements of the outdoor matrix ?? )
2. Resistors: How will the values of R1,R2 and R3 change??
3. IC1: ULN2003A, do I need a different current sink IC for the outdoor model ??
As you see in the second picture the outdoor matrix I plan to use is also 8x8 (has 4 outdoor LEDs in each pixel). Please tell me the part numbers that I should replace my existing components with. Any help will be appreciated.
Thanks
![62_1171583833.jpg](https://obrazki.elektroda.pl/62_1171583833.jpg)