diff --git a/libs/core/output.ts b/libs/core/output.ts
index 3be020a4..90028164 100644
--- a/libs/core/output.ts
+++ b/libs/core/output.ts
@@ -216,10 +216,16 @@ namespace motors {
         setSpeed(speed: number, value: number = 0, unit: MoveUnit = MoveUnit.MilliSeconds) {
             this.init();
             speed = Math.clamp(-100, 100, speed >> 0);
+            // stop if speed is 0
             if (!speed) {
                 this.stop();
                 return;
             }
+            // special: 0 is infinity
+            if (value == 0) {
+                this._setSpeed(speed);
+                return;
+            }
             let useSteps: boolean;
             let stepsOrTime: number;
             switch (unit) {