Adding a small delay between setup of pins.

Proculite.GpioRest/Controllers/GpioController.cs

@@ -19,7 +19,7 @@ namespace Proculite.GpioRest.Controllers
             if (!ModelState.IsValid)
                 return BadRequest();
 
-            return Ok(_gpioService.CurrentPinValue(pinNumber));
+            return Ok(_gpioService.CurrentPinValue(pinNumber).ToString());
         }
     }
 }

Proculite.GpioRest/Services/GpioService.cs

@@ -40,6 +40,7 @@ namespace Proculite.GpioRest.Services
                 }
 
                 _gpioController.OpenPin(pin, pinMode, PinValue.Low);
+                Thread.Sleep(200);
             }
         }