diff --git a/src/lib/components/GatewaySummary.svelte b/src/lib/components/GatewaySummary.svelte
new file mode 100644
index 0000000..759002d
--- /dev/null
+++ b/src/lib/components/GatewaySummary.svelte
@@ -0,0 +1,50 @@
+<script lang="ts">
+	import { onMount } from 'svelte';
+	import { gatewayMessageQueue } from '$lib/store';
+	import { formatTemperature, formatBattery, diffTime } from '$lib/telemetryFormatters';
+
+	import NetworkIcon from '$lib/icons/network.svelte';
+	import SyncIcon from '$lib/icons/Sync.svelte';
+	import ThermometerIcon from '$lib/icons/thermometer.svelte';
+	import BatteryIcon from '$lib/icons/Battery.svelte';
+	import Card from './Card.svelte';
+	import GatewayModal from './modals/GatewayModal.svelte';
+	import type { IGatewayTelemetry } from '$lib/interfaces/ITelemetry';
+
+	let gateways: IGatewayTelemetry[] = [];
+	let sinceUpdate = 0;
+	let interval: number;
+
+	function updateGateways(telemetry: IGatewayTelemetry) {
+		if (interval) clearInterval(interval);
+		sinceUpdate = 0;
+
+		const hiveName = telemetry?.gateway_name;
+		if (!hiveName) return;
+		sinceUpdate = diffTime(new Date(telemetry?.t));
+
+		let hiveIndex = gateways.findIndex((g) => g.gateway_name === hiveName);
+		if (hiveIndex >= 0) gateways[hiveIndex] = telemetry;
+		else gateways.push(telemetry);
+
+		gateways = gateways.sort((a, b) => (a.gateway_name > b.gateway_name ? 1 : -1));
+		interval = setInterval(() => (sinceUpdate = Math.floor(sinceUpdate + 1)), 1000);
+	}
+
+	onMount(() => gatewayMessageQueue.subscribe(updateGateways));
+</script>
+
+{#each gateways as gateway}
+	<Card title={gateway.gateway_name} opens={GatewayModal} data={gateway}>
+		<NetworkIcon slot="logo" />
+
+		<ThermometerIcon slot="first-icon" />
+		<span slot="first-value">{formatTemperature(gateway?.temperature)}°C</span>
+
+		<SyncIcon slot="second-icon" />
+		<span slot="second-value">{sinceUpdate} s</span>
+
+		<BatteryIcon slot="third-icon" />
+		<span slot="third-value">{formatBattery(gateway?.battery_level)} V</span>
+	</Card>
+{/each}
diff --git a/src/lib/components/HiveSummary.svelte b/src/lib/components/HiveSummary.svelte
new file mode 100644
index 0000000..13aced7
--- /dev/null
+++ b/src/lib/components/HiveSummary.svelte
@@ -0,0 +1,56 @@
+<script lang="ts">
+	import { onMount } from 'svelte';
+	import { hiveMessageQueue } from '$lib/store';
+	import {
+		formatWeight,
+		formatTemperature,
+		formatHumidity,
+		diffTime
+	} from '$lib/telemetryFormatters';
+
+	import HiveLogo from '$lib/icons/hive.svelte';
+	import WeightLogo from '$lib/icons/weight.svelte';
+	import ThermometerIcon from '$lib/icons/thermometer.svelte';
+	import HumidityLogo from '$lib/icons/humidity.svelte';
+	import Card from './Card.svelte';
+	import HiveModal from './modals/HiveModal.svelte';
+	import type { IHiveTelemetry } from '$lib/interfaces/ITelemetry';
+
+	let sinceUpdate = 0;
+	let interval: number;
+	let hives: IHiveTelemetry[] = [];
+
+	function updateHives(telemetry: IHiveTelemetry) {
+		if (interval) clearInterval(interval);
+
+		const hiveName = telemetry?.hive_name;
+		if (!hiveName) return;
+		sinceUpdate = diffTime(new Date(telemetry?.t));
+
+		let hiveIndex = hives.findIndex((h) => h.hive_name === hiveName);
+		if (hiveIndex >= 0) hives[hiveIndex] = telemetry;
+		else hives.push(telemetry);
+
+		hives = hives.sort((a, b) => (a.hive_name > b.hive_name ? 1 : -1));
+		interval = setInterval(() => (sinceUpdate = Number((sinceUpdate + 0.1).toFixed(1))), 100);
+	}
+
+	onMount(() => hiveMessageQueue.subscribe(updateHives));
+</script>
+
+{#each hives as hive}
+	<Card title={hive.hive_name} opens={HiveModal} data={hive}>
+		<HiveLogo slot="logo" />
+
+		<WeightLogo slot="first-icon" />
+		<span slot="first-value">{formatWeight(hive?.weight)}kg</span>
+
+		<ThermometerIcon slot="second-icon" />
+		<span slot="second-value">{formatTemperature(hive?.temperature)}°C</span>
+
+		<HumidityLogo slot="third-icon" />
+		<span slot="third-value">{formatHumidity(hive?.humidity)}%</span>
+	</Card>
+{/each}
+
+<p style="text-align: right; margin-top: 0">{sinceUpdate} s since last update</p>
diff --git a/src/lib/store.ts b/src/lib/store.ts
new file mode 100644
index 0000000..c664e84
--- /dev/null
+++ b/src/lib/store.ts
@@ -0,0 +1,17 @@
+import { derived, writable } from 'svelte/store';
+import type { Writable } from 'svelte/store';
+import type IModal from '$lib/interfaces/IModal';
+import type { IGatewayTelemetry, IHiveTelemetry } from './interfaces/ITelemetry';
+
+// message queues
+export const hiveMessageQueue: Writable<IHiveTelemetry> = writable();
+export const gatewayMessageQueue: Writable<IGatewayTelemetry> = writable();
+
+// setters
+export const addHiveMessage = (msg: IHiveTelemetry) => hiveMessageQueue.set(msg);
+export const addGatewayMessageQueue = (msg: IGatewayTelemetry) => gatewayMessageQueue.set(msg);
+
+// modal state
+export const modal: Writable<IModal | null> = writable(null);
+export const modalOpen = derived(modal, ($modal) => $modal != null);
+export const resetModal = () => modal.set(null);