diff --git a/light9/live/GraphToControls.ts b/light9/live/GraphToControls.ts
--- a/light9/live/GraphToControls.ts
+++ b/light9/live/GraphToControls.ts
@@ -4,16 +4,39 @@ import { SyncedGraph } from "../web/Sync
 import { ControlValue, Effect } from "./Effect";
 const log = debug("g2c");
 
+// Callback for GraphToControls to set a ControlValue on a
+// Light9LiveControl (widget for a Device+Attr)
 type NewValueCb = (newValue: ControlValue | null) => void;
 
 // More efficient bridge between liveControl widgets and graph edits (inside Effect),
 // as opposed to letting each widget scan the graph and push lots of
 // tiny patches to it.
+//
+// When you create a Light9LiveControl, it registers with GraphToControls (and does not
+// watch value updates from the graph).
 export class GraphToControls {
   // rename to PageControls?
-  effect: Effect | null = null; // this uri should sync to the editchoice
-  registeredWidgets: Map<NamedNode, Map<NamedNode, NewValueCb>> = new Map();
-  constructor(public graph: SyncedGraph) {}
+  private effect: Effect | null = null; // this uri should sync to the editchoice
+
+  // This will fill with every device+attr in the show. Currently there's no unregister to forget a device or attr.
+  private registeredWidgets: Map<
+    NamedNode /*Device*/,
+    Map<
+      NamedNode /*DeviceAttr*/, //
+      NewValueCb
+    >
+  > = new Map();
+  constructor(public graph: SyncedGraph) {
+    
+  }
+
+  debugDump() {
+    log("dump: effect", this.effect);
+    log("registered widgets");
+    for (let e of this.registeredWidgets.entries()) {
+      log(" rw:", e[0], e[1]);
+    }
+  }
 
   setEffect(effect: NamedNode | null) {
     log(`setEffect ${effect?.value}`);
@@ -31,7 +54,11 @@ export class GraphToControls {
     return this.effect.uri;
   }
 
-  onValuesChanged() {
+  emptyEffect() {
+    throw new Error("not implemented");
+  }
+
+  private onValuesChanged() {
     log(`i learned values changed for ${this.effect?.uri.value} `);
     this.registeredWidgets.forEach((d1: Map<NamedNode, NewValueCb>, device: NamedNode) => {
       d1.forEach((cb: NewValueCb, deviceAttr: NamedNode) => {
diff --git a/light9/live/Light9LiveControls.ts b/light9/live/Light9LiveControls.ts
--- a/light9/live/Light9LiveControls.ts
+++ b/light9/live/Light9LiveControls.ts
@@ -43,15 +43,16 @@ export class Light9LiveControls extends 
     return html`
       <rdfdb-synced-graph></rdfdb-synced-graph>
 
-      <h1>device control</h1>
+      <h1>effect deviceattrs</h1>
 
       <div id="save">
         <div>
           <button @click=${this.newEffect}>New effect</button>
-          <edit-choice .uri=${this.effectChoice}></edit-choice>
+          <edit-choice .uri=${this.effectChoice} @edited=${this.onEffectChoice2}></edit-choice>
           <button @click=${this.clearAll}>clear settings in this effect</button>
         </div>
       </div>
+
       <div id="deviceControls">
         ${this.devices.map(
           (device: NamedNode) => html`
@@ -76,11 +77,13 @@ export class Light9LiveControls extends 
       this.graph = g;
       this.graph.runHandler(this.findDevices.bind(this), "findDevices");
       this.graphToControls = new GraphToControls(this.graph);
-      // this.graph.runHandler(this.xupdate.bind(this), "Light9LiveControls update");
+      // this.graph.runHandler(this.update.bind(this), "Light9LiveControls update");
       this.setEffectFromUrl();
     });
   }
-
+  onEffectChoice2(ev: CustomEvent) {
+    this.effectChoice = ev.detail.newValue as NamedNode;
+  }
   updated(changedProperties: PropertyValues) {
     if (changedProperties.has("effectChoice")) {
       log(`effectChoice to ${this.effectChoice?.value}`);
@@ -88,11 +91,13 @@ export class Light9LiveControls extends 
     }
   }
 
+  // Note that this doesn't fetch setting values, so it only should get rerun
+  // upon (rarer) changes to the devices etc.
   findDevices(patch?: Patch) {
     const U = this.graph.U();
-    if (patch && !patchContainsPreds(patch, [U("rdf:type")])) {
-      return;
-    }
+    // if (patch && !patchContainsPreds(patch, [U("rdf:type")])) {
+    //   return;
+    // }
 
     this.devices = [];
     let classes = this.graph.subjects(U("rdf:type"), U(":DeviceClass"));
@@ -158,38 +163,38 @@ export class Light9LiveControls extends 
     return this.graphToControls.emptyEffect();
   }
 
-  configureFromGraph() {
-    const U = (x: string) => this.graph.Uri(x);
+  // configureFromGraph() {
+  //   const U = (x: string) => this.graph.Uri(x);
 
-    const newDevs: NamedNode[] = [];
-    for (let dc of Array.from(this.graph.sortedUris(this.graph.subjects(U("rdf:type"), U(":DeviceClass"))))) {
-      for (let dev of Array.from(this.graph.sortedUris(this.graph.subjects(U("rdf:type"), dc)))) {
-        if (this.graph.contains(dev, U(":hideInLiveUi"), null)) {
-          continue;
-        }
-        if (newDevs.length == 0) newDevs.push(dev);
-      }
-    }
-    log("is this called?");
-    log(`controls update now has ${newDevs.length} devices`);
-    this.devices = newDevs;
-    this.requestUpdate();
+  //   const newDevs: NamedNode[] = [];
+  //   for (let dc of Array.from(this.graph.sortedUris(this.graph.subjects(U("rdf:type"), U(":DeviceClass"))))) {
+  //     for (let dev of Array.from(this.graph.sortedUris(this.graph.subjects(U("rdf:type"), dc)))) {
+  //       if (this.graph.contains(dev, U(":hideInLiveUi"), null)) {
+  //         continue;
+  //       }
+  //       if (newDevs.length == 0) newDevs.push(dev);
+  //     }
+  //   }
+  //   log("is this called?");
+  //   log(`controls update now has ${newDevs.length} devices`);
+  //   this.devices = newDevs;
+  //   this.requestUpdate();
 
-    return;
+  //   return;
 
-    // Tried css columns- big slowdown from relayout as I'm scrolling.
-    // Tried isotope- seems to only scroll to the right.
-    // Tried columnize- fails in jquery maybe from weird elements.
+  //   // Tried css columns- big slowdown from relayout as I'm scrolling.
+  //   // Tried isotope- seems to only scroll to the right.
+  //   // Tried columnize- fails in jquery maybe from weird elements.
 
-    // not sure how to get this run after the children are created
-    return setTimeout(
-      () =>
-        $("#deviceControls").isotope({
-          // fitColumns would be nice, but it doesn't scroll vertically
-          layoutMode: "masonry",
-          containerStyle: null,
-        }),
-      2000
-    );
-  }
+  //   // not sure how to get this run after the children are created
+  //   return setTimeout(
+  //     () =>
+  //       $("#deviceControls").isotope({
+  //         // fitColumns would be nice, but it doesn't scroll vertically
+  //         layoutMode: "masonry",
+  //         containerStyle: null,
+  //       }),
+  //     2000
+  //   );
+  // }
 }