diff --git a/meshtastic/mesh.proto b/meshtastic/mesh.proto
index 24c471a..279f222 100644
--- a/meshtastic/mesh.proto
+++ b/meshtastic/mesh.proto
@@ -525,6 +525,12 @@ enum HardwareModel {
    * Adafruit NRF52840 feather express with SX1262, SSD1306 OLED and NEO6M GPS
    */
   TWC_MESH_V4 = 62;
+
+  /*
+   * NRF52_PROMICRO_DIY
+   * Promicro NRF52840 with SX1262/LLCC68, SSD1306 OLED and NEO6M GPS
+   */
+  NRF52_PROMICRO_DIY = 63;
   /*
    * ------------------------------------------------------------------------------------------------------------------------------------------
    * Reserved ID For developing private Ports. These will show up in live traffic sparsely, so we can use a high number. Keep it within 8 bits.