diff --git a/main/main.c b/main/main.c
index d05c137..c19a02a 100644
--- a/main/main.c
+++ b/main/main.c
@@ -13,6 +13,8 @@
 #include "led_strip.h"
 
 #include "configulator.h"
+#include "barback.h"
+// TODO main should be merged into barback
 #include "main.h"
 #include "console.h"
 #include "ble.h"
@@ -55,6 +57,10 @@ void led_init() {
   ESP_ERROR_CHECK(led_strip_new_rmt_device(&strip_config, &rmt_config, &led_strip));
 }
 
+void test_callback(cfglr_signaler_t *signaler, cfglr_element_t *element, cfglr_signal_e sig) {
+  CFGLR_LOGI(TAG, "callback %s = '%s'", element->key, element->data);
+}
+
 void app_main(void) {
   // init pump IO immediately to limit run away pumps in case power is on
   pumps_io_init();
@@ -91,7 +97,13 @@ void app_main(void) {
       CFGLR_ELEMENT_U8("armed", 1, CFGLR_SIGNALER_IDF_EVENT()),
       CFGLR_ELEMENT_U8("monitor", 0, CFGLR_SIGNALER_IDF_EVENT()),
       CFGLR_ELEMENT_U8("pour_button", 19, CFGLR_SIGNALER_IDF_EVENT()),
-      CFGLR_ELEMENT_STR("device_name", 32, name, CFGLR_SIGNALER_IDF_EVENT()),
+      CFGLR_ELEMENT_STR(
+        "device_name",
+        32,
+        "",
+        CFGLR_SIGNALER_IDF_EVENT(),
+        CFGLR_SIGNALER_CALLBACK(test_callback)
+      ),
       CFGLR_ELEMENT_BIN("tank_levels", 4, tank_levels, 4, CFGLR_SIGNALER_IDF_EVENT()),
       CFGLR_ELEMENT_BIN("pump_pins", 4, pump_gpio_map, 4, CFGLR_SIGNALER_IDF_EVENT()),
       CFGLR_ELEMENT_BIN("pump_ramp_ms", sizeof(uint16_t) * 4, pump_ramp_ms, sizeof(uint16_t) * 4, CFGLR_SIGNALER_IDF_EVENT()),