Sir,i need some information .. what i mean to say is now i need to connect a wired robot/truck to the dsp kit and make it move in different directions according to the dsp led's like, for one led glow on the dsp kit the truck should move in one direction...sir, here i have attached my pcb board to which now i need to connect a truck , which, according to my input gesture from my laptop it should move in different directions.here for each relay i should connect vcc,gnd and load....but there are 3 holes so to which hole i should connect vcc,gnd,load....it is spst relay.. sir, i have even attached the back side of board...can you please help me...