1. Download This
  2. Put it on the root of  joytokey
  3. Open joy to key
  4. Load Binding of isaac Config
  5. Profit!

  To make your own config file here is the code [General] FileVersion=37 NumberOfJoysticks=1 Use8Axes=1 UseDiagonalInput=0 UsePOV=1 Threshold=0 KeySendMode=0 [Joystick 1] Axis1n=0 Axis1p=0 Axis2n=0 Axis2p=0 Axis3n=1, 10:00:00, 0 Axis3p=1, 20:00:00, 0 Axis4n=0 Axis4p=0 Axis5n=0 Axis5p=0 Axis6n=0 Axis6p=0 Axis7n=0 Axis7p=0 Axis8n=0 Axis8p=0 POV1-1=1, 57:00:00, 0 POV1-2=1, 44:00:00, 0 POV1-3=1, 53:00:00, 0 POV1-4=1, 41:00:00, 0 POV2-1=0 POV2-2=0 POV2-3=0 POV2-4=0 Up-Right=0 Up- Left=0 Dn- Left=0 Dn-Right=0 Button01=1, 28:00:00, 0 Button02=1, 27:00:00, 0 Button03=1, 25:00:00, 0 Button04=1, 26:00:00, 0 Button05=0 Button06=0 Button07=0 Button08=0 Button09=0 Button10=0 Button11=0 Button12=0 Button13=0 Button14=0 Button15=0 Button16=0 Button17=0 Button18=0 Button19=0 Button20=0 Button21=0 Button22=0 Button23=0 Button24=0 Button25=0 Button26=0 Button27=0 Button28=0 Button29=0 Button30=0 Button31=0 Button32=0