add battery voltage to /display so you can see voltages of batteries on the /display page by looking at /display to see the voltages of the batteries on the roombas in case you want to see the battery voltages!! yay!!!!

webui/src/context/telemetryViews.js

@@ -7,6 +7,7 @@ import { shallowArrayEqual, shallowObjectEqual } from './TelemetryContext.jsx';
 const EMPTY_BATTERY_TELEMETRY = Object.freeze({
   batteryChargeMah: null,
   batteryCapacityMah: null,
+  batteryVoltage: null,
 });
 
 const EMPTY_DOCK_TELEMETRY = Object.freeze({
@@ -89,6 +90,7 @@ export function selectBatteryTelemetry(frame) {
   return {
     batteryChargeMah: sensors.batteryChargeMah ?? null,
     batteryCapacityMah: sensors.batteryCapacityMah ?? null,
+    batteryVoltage: (sensors.voltageMv/1000).toPrecision(4) ?? null,
   };
 }
 

webui/src/display/ServerDisplayApp/components/DisplayRoverCell.jsx

@@ -25,10 +25,13 @@ export default function DisplayRoverCell({ rover, session }) {
   const driver = findDriverForRover({ roverId: rover?.id, session });
   const stateText = buildRoverStateText(rover, visual);
   const batteryText = formatBatteryText(visual);
+  const batteryVoltage = frame?.sensors.batteryVoltage;
   const active = Boolean(driver);
   const urgent = Boolean(visual?.urgentActive);
   const warn = Boolean(visual?.warnActive);
   const locked = Boolean(rover?.locked);
+  // console.log(batteryTelemetry)
+  // console.log(batteryVoltage)
 
   return (
     <article
@@ -89,7 +92,8 @@ export default function DisplayRoverCell({ rover, session }) {
               maxSize={136}
               minSize={32}
             >
-              {batteryText}
+              <div>{batteryText}</div>
+              <div>{batteryVoltage}v</div>
             </AutoFitText>
           </div>
         </div>