diff --git a/src/routes/tools/battery-life-calculator/+page.svelte b/src/routes/tools/battery-life-calculator/+page.svelte
index 48a9b13..7037823 100644
--- a/src/routes/tools/battery-life-calculator/+page.svelte
+++ b/src/routes/tools/battery-life-calculator/+page.svelte
@@ -1,16 +1,18 @@
 <script lang="ts">
     import A4 from "../../zhen/notes/physics/sharedComps/A4.svelte";
     import { BatteryLifeCalculator } from "./pageSrc/BatteryCalc";
+    import { getMCU, type MCU_Type } from "./pageSrc/MCU_defs";
 
     let mathMachine = new BatteryLifeCalculator();
 
     let useCustom: boolean = false;
     let selectedText: string = "";
-
+    let selectedMcu: MCU_Type | undefined = undefined;
+    $: selectedMcu = getMCU(selectedText)
     
 
 
-    const options = ["esp32-s3", "Text Two", "Text Three"];
+    const options = ["esp32-s3", "esp32-s3"];
 </script>
 
 <div class="flex justify-center pt-10">
@@ -82,21 +84,28 @@
                     </div>
 
                     {#if !useCustom}
-                        <select
-                            bind:value={selectedText}
-                            class="select select-sm select-bordered w-56 max-w-xs"
-                        >
-                            <option disabled value="">Select a text</option>
-                            {#each options as option}
-                                <option value={option}>{option}</option>
-                            {/each}
-                        </select>
+                        <div>
+                            <select
+                                bind:value={selectedText}
+                                class="select select-sm select-bordered w-56 max-w-xs"
+                            >
+                                <option disabled value="">Select a text</option>
+                                {#each options as option}
+                                    <option value={option}>{option}</option>
+                                {/each}
+                            </select>
 
-                        {#if selectedText}
-                            <p class="mt-4 text-lg">
-                                You selected: {selectedText}
-                            </p>
-                        {/if}
+                            {#if selectedMcu != undefined && selectedMcu?.wifi != undefined}
+                                <p class="mt-4 text-lg">
+                                    wifi
+                                </p>
+                            {/if}
+                            {#if selectedMcu != undefined && selectedMcu?.wifi != undefined}
+                                <p class="mt-4 text-lg">
+                                    ble
+                                </p>
+                            {/if}
+                        </div>
                     {:else}
                         <div class="form-control">
                             <span class="text-sm text-slate-300 text-opacity-60"
diff --git a/src/routes/tools/battery-life-calculator/pageSrc/MCU_defs.ts b/src/routes/tools/battery-life-calculator/pageSrc/MCU_defs.ts
index 0a6b2b5..d4372f2 100644
--- a/src/routes/tools/battery-life-calculator/pageSrc/MCU_defs.ts
+++ b/src/routes/tools/battery-life-calculator/pageSrc/MCU_defs.ts
@@ -6,9 +6,9 @@ export interface MCU_Type {
     bluetooth?: { [key: string]: Number };
 }
 
-export const MCUs: MCU_Type[] = [
+const MCUs: MCU_Type[] = [
     {
-        name: "ESP32-S3",
+        name: "esp32-s3",
         cpu: { // mili amps
             single_core_40MHz: 21.8,
             dual_core_40MHz: 24.4,
@@ -33,7 +33,7 @@ export const MCUs: MCU_Type[] = [
     },
 
     {
-        name: "ESP32-C3",
+        name: "esp32-c3",
         cpu: {
             single_core_80MHz: 22,
             single_core_160MHz: 54.6,
@@ -51,3 +51,13 @@ export const MCUs: MCU_Type[] = [
         }
     }
 ];
+
+export function getMCU(name: string): MCU_Type | undefined{
+    for (let i = 0; i < MCUs.length; i++) {
+        const element = MCUs[i];
+        if (element.name == name)
+            return element
+    }
+
+    return undefined;
+}
\ No newline at end of file