diff --git a/11.风扇.html b/11.风扇.html
index 481c12d..1e0fc8f 100644
--- a/11.风扇.html
+++ b/11.风扇.html
@@ -38,7 +38,9 @@
                 }
                 endShape(CLOSE);
                 speed = lerp(speed, speeds[gear], acceleration);
-                angle += anglePerFrame * (speed * random(0.95, 1.05));
+                angle =
+                    (angle + anglePerFrame * (speed * random(0.95, 1.05))) %
+                    360;
                 pop();
             }
 
@@ -69,6 +71,8 @@
                 circle(0, 95, 10);
                 circle(0, 110, 10);
                 circle(0, 125, 10);
+                fill("rgba(128,128,255,0.8)");
+                circle(0, 80 + 15 * gear, 10);
                 if (mouseIsPressed) {
                     let mx = mouseX - hx;
                     let my = mouseY - hy;
@@ -118,12 +122,10 @@
                 text("HAIYANG", 0, 0);
                 pop();
 
-                textInfo(
-                    `风扇 转速: ${speed.toFixed(2)}`,
-                    "2022-12-17",
-                    "赵海洋爸爸",
-                    0
-                );
+                text(`每分钟 ${speed.toFixed(0)} 转`, 200, 45);
+                line(200, 50, 280, 50);
+                line(200, 50, 190, 60);
+                textInfo(`风扇`, "2022-12-17", "赵海洋爸爸", 0);
 
                 // let o = createVector(0, 0);
                 // let v = createVector(100, -100);