diff --git a/grbl_machine.cpp b/grbl_machine.cpp
index a345376..88942dc 100644
--- a/grbl_machine.cpp
+++ b/grbl_machine.cpp
@@ -44,7 +44,12 @@ void grbl::machine::on_disconnected(grbl::transport *transport) {
 grbl::realtime_status_report grbl::parse_status_report(std::string line, grbl::realtime_status_report& result) {
 //    grbl::realtime_status_report result;
 
-    auto l = line.substr(1, -1);
+    // pin values are always reset when a report arrives
+    // if there is no value in the Pn: field then it means
+    // no pin is active
+    result.signals.value = 0;
+
+    auto l = line.substr(1, line.size() - 2);
     auto pieces = split_string(l, "|");
     for (auto i = 0; i < pieces.size(); i++) {
         if (i == 0) {
@@ -68,6 +73,38 @@ grbl::realtime_status_report grbl::parse_status_report(std::string line, grbl::r
                 auto p = split_string(elements[1], ",");
                 result.buffers_free = std::stoi(p[0]);
                 result.rx_chars_free = std::stoi(p[1]);
+            } else if (elements[0] == "Pn") {
+                for (auto& c: elements[1]) {
+                    switch (c) {
+                        case 'P':
+                            result.signals.bit.probe = true;
+                            break;
+                        case 'X':
+                            result.signals.bit.x_limit = true;
+                            break;
+                        case 'Y':
+                            result.signals.bit.y_limit = true;
+                            break;
+                        case 'Z':
+                            result.signals.bit.z_limit = true;
+                            break;
+                        case 'D':
+                            result.signals.bit.door = true;
+                            break;
+                        case 'H':
+                            result.signals.bit.hold = true;
+                            break;
+                        case 'R':
+                            result.signals.bit.soft_reset = true;
+                            break;
+                        case 'S':
+                            result.signals.bit.cycle_start = true;
+                            break;
+                        default:
+                            std::cerr << "Unknown pin value [" << c << "] when parsing status report" << std::endl;
+                            break;
+                    }
+                }
             } else {
                 // not implemented
             }
@@ -640,7 +677,7 @@ void grbl::machine::request_jog_fixed(grbl::jog_direction dir, float distance, f
             break;
     }
     command += std::to_string(distance) + " F" + std::to_string(feed);
-    
+
     pipe->send(command);
     awaiting_responses++;
 }
@@ -714,7 +751,7 @@ void grbl::machine_state_init::move_to_next_init_stage() {
     switch (init_state) {
         case init_stage::start:
             init_state = init_stage::set_work_pos;
-            cnc->pipe->send("$10=1"); // machine pos in report, please
+            cnc->pipe->send("$10=511"); // machine pos in report, please. also sensors and buffers info
             break;
         case init_stage::set_work_pos:
             init_state = init_stage::fetch_settings;
diff --git a/grbl_machine.h b/grbl_machine.h
index e1648ef..407270b 100644
--- a/grbl_machine.h
+++ b/grbl_machine.h
@@ -38,7 +38,19 @@ struct realtime_status_report {
     float feed_rate = 0;
     float programmed_rpm = 0;
     float actual_rpm = 0;
-    std::string signals;
+    union {
+        struct {
+            bool x_limit : 1;
+            bool y_limit : 1;
+            bool z_limit : 1;
+            bool probe : 1;
+            bool door : 1;
+            bool hold : 1;
+            bool soft_reset : 1;
+            bool cycle_start : 1;
+        } bit;
+        uint8_t value = 0;
+    } signals;
     float axis_offsets[3] = {0};
     std::string coordinate_system;
     std::string overrides;
diff --git a/grbl_test.cpp b/grbl_test.cpp
index f921568..0ff95d5 100644
--- a/grbl_test.cpp
+++ b/grbl_test.cpp
@@ -44,7 +44,13 @@ TEST(grbl_status_report, parse) {
     EXPECT_EQ(35, r.buffers_free);
 
     //
-    grbl::parse_status_report("<Home|MPos:0.000,0.000,0.000|Bf:35,1022|FS:0,0|Pn:Z|Ov:100,100,100>", r);
+    grbl::parse_status_report("<Home|MPos:0.000,0.000,0.000|Bf:35,1022|FS:0,0|Pn:PZ|Ov:100,100,100>", r);
     EXPECT_EQ(grbl::machine_status::home, r.status);
     EXPECT_EQ(1022, r.rx_chars_free);
+
+    EXPECT_EQ(true, r.signals.bit.probe);
+
+    EXPECT_EQ(false, r.signals.bit.x_limit);
+    EXPECT_EQ(false, r.signals.bit.y_limit);
+    EXPECT_EQ(true, r.signals.bit.z_limit);
 }
\ No newline at end of file
diff --git a/main.cpp b/main.cpp
index 98ee1b1..26c1488 100644
--- a/main.cpp
+++ b/main.cpp
@@ -77,6 +77,10 @@ public:
     Widget *parameters_layer;
     TextBox *mpos_x_text, *mpos_y_text, *mpos_z_text;
     ComboBox *cbo_work_offset, *cbo_tool, *cbo_jog_feed_rates, *cbo_jog_distance;
+
+    ToolButton *btn_pin_door, *btn_pin_hold, *btn_pin_reset, *btn_pin_cycle_start;
+    ToolButton *btn_pin_limit_x, *btn_pin_limit_y, *btn_pin_limit_z, *btn_pin_probe;
+
     Button *btn_keyboard_jog;
     std::stringstream dro_ss;
 
@@ -101,6 +105,7 @@ public:
 
         add_status_markup();
         add_dro_markup();
+        add_pins_markup();
         add_jogging_markup();
         add_work_parameters_markup();
 
@@ -318,7 +323,7 @@ public:
     }
 
     void add_dro_markup() {
-        dro_ss << std::setprecision(4) << std::fixed;
+        dro_ss << std::setprecision(3) << std::fixed;
 
         // DRO
         info_layer->add<Label>("DRO", "sans-bold", 20);
@@ -378,6 +383,48 @@ public:
         });
     }
 
+    void add_pins_markup() {
+        // Pins
+        info_layer->add<Label>("Pins", "sans-bold", 20);
+        auto pins_holder = info_layer->add<Widget>();
+        pins_holder->set_layout(new BoxLayout(Orientation::Horizontal, Alignment::Fill, 4, 4));
+
+        btn_pin_door = pins_holder->add<ToolButton>(0, "D");
+//        btn_pin_door->set_enabled(false);
+        btn_pin_door->set_flags(Button::Flags::NormalButton);
+
+        btn_pin_hold = pins_holder->add<ToolButton>(0, "H");
+//        btn_pin_hold->set_enabled(false);
+        btn_pin_hold->set_flags(Button::Flags::NormalButton);
+
+        btn_pin_reset = pins_holder->add<ToolButton>(0, "R");
+//        btn_pin_reset->set_enabled(false);
+        btn_pin_reset->set_flags(Button::Flags::NormalButton);
+
+        btn_pin_cycle_start = pins_holder->add<ToolButton>(0, "S");
+//        btn_pin_cycle_start->set_enabled(false);
+        btn_pin_cycle_start->set_flags(Button::Flags::NormalButton);
+
+        auto a = pins_holder->add<Label>("");
+        a->set_fixed_width(30);
+
+        btn_pin_limit_x = pins_holder->add<ToolButton>(0, "X");
+//        btn_pin_limit_x->set_enabled(false);
+        btn_pin_limit_x->set_flags(Button::Flags::NormalButton);
+
+        btn_pin_limit_y = pins_holder->add<ToolButton>(0, "Y");
+//        btn_pin_limit_y->set_enabled(false);
+        btn_pin_limit_y->set_flags(Button::Flags::NormalButton);
+
+        btn_pin_limit_z = pins_holder->add<ToolButton>(0, "Z");
+//        btn_pin_limit_z->set_enabled(false);
+        btn_pin_limit_z->set_flags(Button::Flags::NormalButton);
+
+        btn_pin_probe = pins_holder->add<ToolButton>(0, "P");
+//        btn_pin_probe->set_enabled(false);
+        btn_pin_probe->set_flags(Button::Flags::NormalButton);
+    }
+
     void refresh_offset() const {
         auto offset_name = "G" + std::to_string(cbo_work_offset->selected_index() + 54);
         cnc.set_work_offset(offset_name);
@@ -388,13 +435,13 @@ public:
         tab_widget->append_tab("Parameters", parameters_vscroll);
 
         parameters_layer = new Widget(parameters_vscroll);
-        parameters_layer->set_layout(new GridLayout(Orientation::Horizontal, 1, Alignment::Minimum));
+        parameters_layer->set_layout(new GridLayout(Orientation::Horizontal, 1, Alignment::Middle));
 
         auto& parameters = cnc.get_parameters();
 
         for (auto& entry: parameters) {
             auto w = parameters_layer->add<Widget>();
-            w->set_layout(new BoxLayout(Orientation::Horizontal, Alignment::Minimum, 0, 0));
+            w->set_layout(new BoxLayout(Orientation::Horizontal, Alignment::Middle, 2, 2));
             auto x = w->add<Label>(entry.first, "sans-bold", 20);
             x->set_fixed_width(50);
 
@@ -402,8 +449,8 @@ public:
             y->set_editable(true);
             y->set_fixed_width(200);
 
-            auto z = w->add<ToolButton>(FA_SAVE);
-            z->set_flags(Button::Flags::NormalButton); // no toggle, please
+            auto z = w->add<Button>("", FA_SAVE);
+//            z->set_flags(Button::Flags::NormalButton); // no toggle, please
             z->set_tooltip("save");
         }
     }
@@ -499,6 +546,17 @@ public:
         }
 //        }
 
+
+        // FIXME: ugly way of retrieving the bg color
+        btn_pin_door->set_background_color(report.signals.bit.door ? color_red : btn_load_program->background_color());
+        btn_pin_hold->set_background_color(report.signals.bit.hold ? color_red : btn_load_program->background_color());
+        btn_pin_reset->set_background_color(report.signals.bit.soft_reset ? color_red : btn_load_program->background_color());
+        btn_pin_cycle_start->set_background_color(report.signals.bit.cycle_start ? color_red : btn_load_program->background_color());
+        btn_pin_limit_x->set_background_color(report.signals.bit.x_limit ? color_red : btn_load_program->background_color());
+        btn_pin_limit_y->set_background_color(report.signals.bit.y_limit ? color_red : btn_load_program->background_color());
+        btn_pin_limit_z->set_background_color(report.signals.bit.z_limit ? color_red : btn_load_program->background_color());
+        btn_pin_probe->set_background_color(report.signals.bit.probe ? color_red : btn_load_program->background_color());
+
         update_dro();
         last_report = report;
     }