diff --git a/client/client/lib/espnow/src/espnow.hpp b/client/client/lib/espnow/src/espnow.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..536fba1c2ce9287ed273035aab922baeaeed1d0f
--- /dev/null
+++ b/client/client/lib/espnow/src/espnow.hpp
@@ -0,0 +1,13 @@
+
+#include <string>
+#define NUM_SENSORS 10
+
+// I originally wanted to define the mac addresses here, but i got a "multiple definition" error?
+typedef struct dataMessage{
+    std::string identifiers[NUM_SENSORS];
+    float values[NUM_SENSORS];
+}dataMessage;
+
+int send_data(dataMessage data);
+
+int espnow_setup();
\ No newline at end of file