diff --git a/firmware/controllers/lua/examples/gdi4-communication.txt b/firmware/controllers/lua/examples/gdi4-communication.lua
similarity index 93%
rename from firmware/controllers/lua/examples/gdi4-communication.txt
rename to firmware/controllers/lua/examples/gdi4-communication.lua
index f2304bbbaf..cd010862ec 100644
--- a/firmware/controllers/lua/examples/gdi4-communication.txt
+++ b/firmware/controllers/lua/examples/gdi4-communication.lua
@@ -1,3 +1,5 @@
+-- scriptname gdi4-communication.lua
+
 -- communication with https://github.com/rusefi/rusefi-hardware/tree/main/GDI-4ch/firmware
 -- hpfpbench
 
@@ -7,31 +9,8 @@ busIndex = 1
 GDI4_BASE_ADDRESS = 0xBB20
 GDI_CHANGE_ADDRESS = GDI4_BASE_ADDRESS + 0x10
 
-hexstr = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, "A", "B", "C", "D", "E", "F" }
-
-function toHexString(num)
-	if num == 0 then
-		return '0'
-	end
-
-	local result = ""
-	while num > 0 do
-		local n = num % 16
-		result = hexstr[n + 1] ..result
-		num = math.floor(num / 16)
-	end
-	return result
-end
-
-function arrayToString(arr)
-	local str = ""
-	local index = 1
-	while arr[index] ~= nil do
-		str = str.." "..toHexString(arr[index])
-		index = index + 1
-	end
-	return str
-end
+-- include print-array.lua
+-- endinclude
 
 function printPacket(bus, id, dlc, data)
 --	print('Received status packet ' ..arrayToString(data))
diff --git a/firmware/controllers/lua/examples/gdi8-pressure-input.txt b/firmware/controllers/lua/examples/gdi8-pressure-input.lua
similarity index 57%
rename from firmware/controllers/lua/examples/gdi8-pressure-input.txt
rename to firmware/controllers/lua/examples/gdi8-pressure-input.lua
index de564e01fd..32decb1436 100644
--- a/firmware/controllers/lua/examples/gdi8-pressure-input.txt
+++ b/firmware/controllers/lua/examples/gdi8-pressure-input.lua
@@ -1,31 +1,10 @@
+-- scriptname gdi8-pressure-input.lua
+
 sensor = Sensor.new("FuelPressureHigh")
 sensor : setTimeout(1000)
 
-hexstr = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, "A", "B", "C", "D", "E", "F" }
-
-function toHexString(num)
-	if num == 0 then
-		return '0'
-	end
-
-	local result = ""
-	while num > 0 do
-		local n = num % 16
-		result = hexstr[n + 1] ..result
-		num = math.floor(num / 16)
-	end
-	return result
-end
-
-function arrayToString(arr)
-	local str = ""
-	local index = 1
-	while arr[index] ~= nil do
-		str = str.." "..toHexString(arr[index])
-		index = index + 1
-	end
-	return str
-end
+-- include print-array.lua
+-- endinclude
 
 function getTwoBytesLSB(data, offset, factor)
 	return (data[offset + 2] * 256 + data[offset + 1]) * factor
diff --git a/firmware/controllers/lua/examples/print-array.lua b/firmware/controllers/lua/examples/print-array.lua
new file mode 100644
index 0000000000..e3e6c7cf70
--- /dev/null
+++ b/firmware/controllers/lua/examples/print-array.lua
@@ -0,0 +1,25 @@
+hexstr = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, "A", "B", "C", "D", "E", "F" }
+
+function toHexString(num)
+	if num == 0 then
+		return '0'
+	end
+
+	local result = ""
+	while num > 0 do
+		local n = num % 16
+		result = hexstr[n + 1] ..result
+		num = math.floor(num / 16)
+	end
+	return result
+end
+
+function arrayToString(arr)
+	local str = ""
+	local index = 1
+	while arr[index] ~= nil do
+		str = str.." "..toHexString(arr[index])
+		index = index + 1
+	end
+	return str
+end