diff --git a/compcount.lua b/compcount.lua
index 5208c5c..000a0a9 100644
--- a/compcount.lua
+++ b/compcount.lua
@@ -404,42 +404,52 @@ end
 
 drawOverview = function()
     local items = getBaseItemIds()
-    local itemCounts = getMeItemCounts(items)
     local sortedItemIds = {}
+    local visibleItemCount = 0
 
-    for i = 1, #items do
-        sortedItemIds[i] = items[i]
-    end
+    local function renderOverview()
+        local itemCounts = getMeItemCounts(items)
 
-    table.sort(sortedItemIds, function(a, b)
-        local countA = itemCounts[a] or 0
-        local countB = itemCounts[b] or 0
-
-        if countA ~= countB then
-            return countA > countB
+        for i = 1, #items do
+            sortedItemIds[i] = items[i]
         end
 
-        return a < b
-    end)
+        table.sort(sortedItemIds, function(a, b)
+            local countA = itemCounts[a] or 0
+            local countB = itemCounts[b] or 0
 
-    local visibleItemCount = math.min(#sortedItemIds, 9)
+            if countA ~= countB then
+                return countA > countB
+            end
 
-    frame.buffer:clear()
+            return a < b
+        end)
 
-    for i = 1, visibleItemCount do
-        local itemId = sortedItemIds[i]
-        local item = getItemById(itemId)
-        local icon = getItemIcon(item) or getFallbackIcon()
-        drawItem(icon, 4+(8+4)*((i-1)%3), 2+(5+1)*math.floor((i-1)/3), itemCounts[itemId] or 0)
+        visibleItemCount = math.min(#sortedItemIds, 9)
+
+        frame.buffer:clear()
+
+        for i = 1, visibleItemCount do
+            local itemId = sortedItemIds[i]
+            local item = getItemById(itemId)
+            local icon = getItemIcon(item) or getFallbackIcon()
+            drawItem(icon, 4+(8+4)*((i-1)%3), 2+(5+1)*math.floor((i-1)/3), itemCounts[itemId] or 0)
+        end
+
+        assertBufferValid(frame)
+        frame:drawBuffer()
     end
 
-    assertBufferValid(frame)
-    frame:drawBuffer()
+    renderOverview()
+    local refreshTimer = os.startTimer(30)
 
     while true do
-        local _, side, x, y = os.pullEvent("monitor_touch")
+        local event, p1, x, y = os.pullEvent()
 
-        if side == monName then
+        if event == "timer" and p1 == refreshTimer then
+            renderOverview()
+            refreshTimer = os.startTimer(30)
+        elseif event == "monitor_touch" and p1 == monName then
             local col = math.floor((x - 4) / 12)
             local row = math.floor((y - 2) / 6)