diff --git a/main.c b/main.c
index a1ab261..9caa879 100644
--- a/main.c
+++ b/main.c
@@ -96,9 +96,10 @@ int Trigger(bool rising);
 void start_signal() {
   // configure M0PWM2, at GPIO PF2, BoosterPack 1 header C1 pin 2
   SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
-  GPIOPinTypePWM(GPIO_PORTF_BASE, GPIO_PIN_2);
+  GPIOPinTypePWM(GPIO_PORTF_BASE, GPIO_PIN_2 | GPIO_PIN_3);
   GPIOPinConfigure(GPIO_PF2_M0PWM2);
-  GPIOPadConfigSet(GPIO_PORTF_BASE, GPIO_PIN_2, GPIO_STRENGTH_2MA,
+  GPIOPinConfigure(GPIO_PF3_M0PWM3);
+  GPIOPadConfigSet(GPIO_PORTF_BASE, GPIO_PIN_2 | GPIO_PIN_3, GPIO_STRENGTH_2MA,
                    GPIO_PIN_TYPE_STD);
   // configure the PWM0 peripheral, gen 1, outputs 2 and 3
   SysCtlPeripheralEnable(SYSCTL_PERIPH_PWM0);
@@ -110,7 +111,9 @@ void start_signal() {
                   roundf((float)gSystemClock / PWM_FREQUENCY));
   PWMPulseWidthSet(PWM0_BASE, PWM_OUT_2,
                    roundf((float)gSystemClock / PWM_FREQUENCY * 0.4f));
-  PWMOutputState(PWM0_BASE, PWM_OUT_2_BIT, true);
+  PWMPulseWidthSet(PWM0_BASE, PWM_OUT_3,
+                   roundf((float)gSystemClock / PWM_FREQUENCY * 0.4f));
+  PWMOutputState(PWM0_BASE, PWM_OUT_2_BIT | PWM_OUT_3_BIT, true);
   PWMGenEnable(PWM0_BASE, PWM_GEN_1);
 }