diff --git a/UI/ui_button.cpp b/UI/ui_button.cpp
index 1ae78c4..278b587 100644
--- a/UI/ui_button.cpp
+++ b/UI/ui_button.cpp
@@ -5,9 +5,8 @@ UI_button::UI_button(std::string text, Color fg_color, Color bg_color, QObject *
 {
 }
 
-UI_button::UI_button(const json &j, QObject *parent) : UI_item(UI_BUTTON_TYPE, parent)
+UI_button::UI_button(QObject *parent) : UI_item(UI_BUTTON_TYPE, parent)
 {
-    from_json(j);
 }
 
 void UI_button::from_json(const json &j)
diff --git a/UI/ui_button.hpp b/UI/ui_button.hpp
index c7a23a3..caee94e 100644
--- a/UI/ui_button.hpp
+++ b/UI/ui_button.hpp
@@ -8,7 +8,7 @@ class UI_button : public UI_item
     Q_OBJECT
   public:
     UI_button(std::string text, Color fg_color, Color bg_color, QObject *parent = nullptr);
-    UI_button(const json &j, QObject *parent = nullptr);
+    UI_button(QObject *parent = nullptr);
 
     void from_json(const json &j) override;
     json to_json(size_t id) const override;
diff --git a/UI/ui_can.cpp b/UI/ui_can.cpp
index 37c0c2f..c902358 100644
--- a/UI/ui_can.cpp
+++ b/UI/ui_can.cpp
@@ -17,10 +17,9 @@ UI_can::UI_can(Color fg_color, Color bg_color, QObject *parent) : UI_item(UI_CAN
     setup_item(false, true, true);
 }
 
-UI_can::UI_can(const json &j, QObject *parent) : UI_item(UI_CAN_TYPE, parent)
+UI_can::UI_can(QObject *parent) : UI_item(UI_CAN_TYPE, parent)
 {
     setup_item(false, true, true);
-    from_json(j);
 }
 
 void UI_can::add_send_message(QCanBusFrame msg)
diff --git a/UI/ui_can.hpp b/UI/ui_can.hpp
index c9a661c..92de899 100644
--- a/UI/ui_can.hpp
+++ b/UI/ui_can.hpp
@@ -20,7 +20,7 @@ class UI_can : public UI_item
     Q_OBJECT
   public:
     UI_can(Color fg_color, Color bg_color, QObject *parent = nullptr);
-    UI_can(const json &j, QObject *parent = nullptr);
+    UI_can(QObject *parent = nullptr);
 
     void add_send_message(QCanBusFrame msg);
     void add_received_message(QCanBusFrame msg);
diff --git a/UI/ui_checkbox.cpp b/UI/ui_checkbox.cpp
index 20e2cd4..0b05d27 100644
--- a/UI/ui_checkbox.cpp
+++ b/UI/ui_checkbox.cpp
@@ -9,11 +9,6 @@ UI_checkbox::UI_checkbox(std::string text, Color fg_color, Color bg_color, QObje
 {
 }
 
-UI_checkbox::UI_checkbox(const json &j, QObject *parent) : UI_item(UI_CHECKBOX_TYPE, parent), m_checked()
-{
-    from_json(j);
-}
-
 void UI_checkbox::click()
 {
     m_checked = !m_checked;
diff --git a/UI/ui_checkbox.hpp b/UI/ui_checkbox.hpp
index 6610338..6ddb0ee 100644
--- a/UI/ui_checkbox.hpp
+++ b/UI/ui_checkbox.hpp
@@ -9,7 +9,6 @@ class UI_checkbox : public UI_item
   public:
     UI_checkbox(QObject *parent = nullptr);
     UI_checkbox(std::string text, Color fg_color, Color bg_color, QObject *parent = nullptr);
-    UI_checkbox(const json &j, QObject *parent = nullptr);
 
     void click() override;
     void set_state(bool state);
diff --git a/UI/ui_combobox.cpp b/UI/ui_combobox.cpp
index c6f6418..29be3fa 100644
--- a/UI/ui_combobox.cpp
+++ b/UI/ui_combobox.cpp
@@ -12,12 +12,6 @@ UI_combobox::UI_combobox(Color fg_color, Color bg_color, std::vector<std::string
     setup_item(false, true, true);
 }
 
-UI_combobox::UI_combobox(const json &j, QObject *parent) : UI_item(UI_COMBOBOX_TYPE, parent)
-{
-    setup_item(false, true, true);
-    from_json(j);
-}
-
 void UI_combobox::set_selected(size_t selected)
 {
     if (selected == m_selected)
diff --git a/UI/ui_combobox.hpp b/UI/ui_combobox.hpp
index 2274b7b..718d276 100644
--- a/UI/ui_combobox.hpp
+++ b/UI/ui_combobox.hpp
@@ -10,7 +10,6 @@ class UI_combobox : public UI_item
     UI_combobox(QObject *parent = nullptr);
     UI_combobox(Color fg_color, Color bg_color, std::vector<std::string> options, size_t selected = 0,
                 QObject *parent = nullptr);
-    UI_combobox(const json &j, QObject *parent = nullptr);
 
     void set_selected(size_t selected) override;
     void set_selected(std::string selected);
diff --git a/UI/ui_dial.cpp b/UI/ui_dial.cpp
index d2af6c4..6a9f732 100644
--- a/UI/ui_dial.cpp
+++ b/UI/ui_dial.cpp
@@ -22,9 +22,8 @@ UI_dial::UI_dial(std::string text, double min, double max, double value, QObject
 {
 }
 
-UI_dial::UI_dial(const json &j, QObject *parent) : UI_item(UI_DIAL_TYPE, parent)
+UI_dial::UI_dial(QObject *parent) : UI_item(UI_DIAL_TYPE, parent)
 {
-    from_json(j);
 }
 
 void UI_dial::set_value(double value)
diff --git a/UI/ui_dial.hpp b/UI/ui_dial.hpp
index fb77a7c..73e078d 100644
--- a/UI/ui_dial.hpp
+++ b/UI/ui_dial.hpp
@@ -13,7 +13,7 @@ class UI_dial : public UI_item
     UI_dial(std::string text, Color fg_color, Color bg_color, double min, double max, double value,
             QObject *parent = nullptr);
     UI_dial(std::string text, double min, double max, double value, QObject *parent = nullptr);
-    UI_dial(const json &j, QObject *parent = nullptr);
+    UI_dial(QObject *parent = nullptr);
 
     void set_value(double value) override;
     double value() const;
diff --git a/UI/ui_label.cpp b/UI/ui_label.cpp
index a02fff8..2453020 100644
--- a/UI/ui_label.cpp
+++ b/UI/ui_label.cpp
@@ -5,9 +5,8 @@ UI_label::UI_label(std::string text, Color fg_color, Color bg_color, QObject *pa
 {
 }
 
-UI_label::UI_label(const json &j, QObject *parent) : UI_item(UI_LABEL_TYPE, parent)
+UI_label::UI_label(QObject *parent) : UI_item(UI_LABEL_TYPE, parent)
 {
-    from_json(j);
 }
 
 void UI_label::from_json(const json &j)
diff --git a/UI/ui_label.hpp b/UI/ui_label.hpp
index 25182c6..49daedc 100644
--- a/UI/ui_label.hpp
+++ b/UI/ui_label.hpp
@@ -9,7 +9,7 @@ class UI_label : public UI_item
     Q_OBJECT
   public:
     UI_label(std::string text, Color fg_color, Color bg_color, QObject *parent = nullptr);
-    UI_label(const json &j, QObject *parent = nullptr);
+    UI_label(QObject *parent = nullptr);
 
     void from_json(const json &j) override;
     json to_json(size_t id) const override;
diff --git a/UI/ui_led.cpp b/UI/ui_led.cpp
index faeff42..4f4b3b0 100644
--- a/UI/ui_led.cpp
+++ b/UI/ui_led.cpp
@@ -9,11 +9,6 @@ UI_led::UI_led(std::string text, Color fg_color, Color bg_color, QObject *parent
 {
 }
 
-UI_led::UI_led(const json &j, QObject *parent) : UI_item(UI_LED_TYPE, parent)
-{
-    from_json(j);
-}
-
 bool UI_led::set_led(bool state, Color on, Color off)
 {
     set_bg_color(state ? on : off);
diff --git a/UI/ui_led.hpp b/UI/ui_led.hpp
index f6ced7d..0d18fcf 100644
--- a/UI/ui_led.hpp
+++ b/UI/ui_led.hpp
@@ -10,7 +10,6 @@ class UI_led : public UI_item
   public:
     UI_led(QObject *parent = nullptr);
     UI_led(std::string text, Color fg_color, Color bg_color, QObject *parent = nullptr);
-    UI_led(const json &j, QObject *parent = nullptr);
 
     bool set_led(bool state, Color on, Color off);
 
diff --git a/UI/ui_plot.cpp b/UI/ui_plot.cpp
index cd8c0c8..4576e40 100644
--- a/UI/ui_plot.cpp
+++ b/UI/ui_plot.cpp
@@ -10,11 +10,6 @@ UI_plot::UI_plot(std::string text, std::string x_label, std::string y_label, QOb
     set_text(text);
 }
 
-UI_plot::UI_plot(const json &j, QObject *parent) : UI_item{UI_PLOT_TYPE, parent}
-{
-    from_json(j);
-}
-
 void UI_plot::set_x_label(std::string name)
 {
     m_x_label = name;
diff --git a/UI/ui_plot.hpp b/UI/ui_plot.hpp
index e3e9394..668f82d 100644
--- a/UI/ui_plot.hpp
+++ b/UI/ui_plot.hpp
@@ -8,7 +8,6 @@ class UI_plot : public UI_item
   public:
     explicit UI_plot(QObject *parent = nullptr);
     UI_plot(std::string text, std::string x_label, std::string y_label, QObject *parent = nullptr);
-    UI_plot(const json &j, QObject *parent = nullptr);
 
     void set_x_label(std::string name);
     std::string x_label() const;
diff --git a/UI/ui_slider.cpp b/UI/ui_slider.cpp
index f874eda..e173119 100644
--- a/UI/ui_slider.cpp
+++ b/UI/ui_slider.cpp
@@ -22,9 +22,8 @@ UI_slider::UI_slider(std::string text, double min, double max, double value, QOb
 {
 }
 
-UI_slider::UI_slider(const json &j, QObject *parent) : UI_item(UI_SLIDER_TYPE, parent)
+UI_slider::UI_slider(QObject *parent) : UI_item(UI_SLIDER_TYPE, parent)
 {
-    from_json(j);
 }
 
 void UI_slider::set_value(double value)
diff --git a/UI/ui_slider.hpp b/UI/ui_slider.hpp
index 88bc4cb..ed33aaf 100644
--- a/UI/ui_slider.hpp
+++ b/UI/ui_slider.hpp
@@ -13,7 +13,7 @@ class UI_slider : public UI_item
     UI_slider(std::string text, Color fg_color, Color bg_color, double min, double max, double value,
               QObject *parent = nullptr);
     UI_slider(std::string text, double min, double max, double value, QObject *parent = nullptr);
-    UI_slider(const json &j, QObject *parent = nullptr);
+    UI_slider(QObject *parent = nullptr);
 
     void set_value(double value) override;
     double value() const;
diff --git a/UI/ui_textbox.cpp b/UI/ui_textbox.cpp
index 9ccd2a3..3a3350c 100644
--- a/UI/ui_textbox.cpp
+++ b/UI/ui_textbox.cpp
@@ -5,9 +5,8 @@ UI_textbox::UI_textbox(std::string hint, Color fg_color, Color bg_color, QObject
 {
 }
 
-UI_textbox::UI_textbox(const json &j, QObject *parent) : UI_item(UI_TEXTBOX_TYPE, parent)
+UI_textbox::UI_textbox(QObject *parent) : UI_item(UI_TEXTBOX_TYPE, parent)
 {
-    from_json(j);
 }
 
 void UI_textbox::set_text(std::string text)
diff --git a/UI/ui_textbox.hpp b/UI/ui_textbox.hpp
index fcc5929..5314473 100644
--- a/UI/ui_textbox.hpp
+++ b/UI/ui_textbox.hpp
@@ -9,7 +9,7 @@ class UI_textbox : public UI_item
     Q_OBJECT
   public:
     UI_textbox(std::string hint, Color fg_color, Color bg_color, QObject *parent = nullptr);
-    UI_textbox(const json &j, QObject *parent = nullptr);
+    UI_textbox(QObject *parent = nullptr);
 
     void set_text(std::string text) override;
 
diff --git a/UI/ui_thermo.cpp b/UI/ui_thermo.cpp
index ca2eb03..72a81ea 100644
--- a/UI/ui_thermo.cpp
+++ b/UI/ui_thermo.cpp
@@ -22,9 +22,8 @@ UI_thermo::UI_thermo(std::string text, double min, double max, double value, QOb
 {
 }
 
-UI_thermo::UI_thermo(const json &j, QObject *parent) : UI_item(UI_THERMO_TYPE, parent)
+UI_thermo::UI_thermo(QObject *parent) : UI_item(UI_THERMO_TYPE, parent)
 {
-    from_json(j);
 }
 
 void UI_thermo::set_value(double value)
diff --git a/UI/ui_thermo.hpp b/UI/ui_thermo.hpp
index 1ada877..7576133 100644
--- a/UI/ui_thermo.hpp
+++ b/UI/ui_thermo.hpp
@@ -14,7 +14,7 @@ class UI_thermo : public UI_item
     UI_thermo(std::string text, Color fg_color, Color bg_color, double min, double max, double value,
               QObject *parent = nullptr);
     UI_thermo(std::string text, double min, double max, double value, QObject *parent = nullptr);
-    UI_thermo(const json &j, QObject *parent = nullptr);
+    UI_thermo(QObject *parent = nullptr);
 
     void set_value(double value) override;
     double value() const;
diff --git a/tests/UI_button.cpp b/tests/UI_button.cpp
index 26fcf73..7f3a69e 100644
--- a/tests/UI_button.cpp
+++ b/tests/UI_button.cpp
@@ -5,7 +5,8 @@ TEST(UI_button, to_from_json)
 {
     UI_button button("button_text", Color(255, 255, 255), Color(0, 0, 0), nullptr);
     json j = button.to_json(0);
-    UI_button button2(j);
+    UI_button button2;
+    button2.from_json(j);
     EXPECT_EQ(button.text(), button2.text());
     EXPECT_EQ(button.fg_color(), button2.fg_color());
     EXPECT_EQ(button.bg_color(), button2.bg_color());
diff --git a/tests/UI_checkbox.cpp b/tests/UI_checkbox.cpp
index 5eade45..1106460 100644
--- a/tests/UI_checkbox.cpp
+++ b/tests/UI_checkbox.cpp
@@ -4,7 +4,8 @@ TEST(UI_checkbox, to_from_json)
 {
     UI_checkbox checkbox("checkbox_text", Color(255, 255, 255), Color(0, 0, 0));
     json j = checkbox.to_json(0);
-    UI_checkbox checkbox2(j);
+    UI_checkbox checkbox2;
+    checkbox2.from_json(j);
     EXPECT_EQ(checkbox.text(), checkbox2.text());
     EXPECT_EQ(checkbox.fg_color(), checkbox2.fg_color());
     EXPECT_EQ(checkbox.bg_color(), checkbox2.bg_color());
diff --git a/tests/UI_combobox.cpp b/tests/UI_combobox.cpp
index 60d6bd7..be4d848 100644
--- a/tests/UI_combobox.cpp
+++ b/tests/UI_combobox.cpp
@@ -2,11 +2,12 @@
 
 TEST(UI_combobox, to_from_json)
 {
-    UI_combobox checkbox(Color(255, 255, 255), Color(0, 0, 0), {"option1", "option2"});
-    json j = checkbox.to_json(0);
-    UI_combobox checkbox2(j);
-    EXPECT_EQ(checkbox.text(), checkbox2.text());
-    EXPECT_EQ(checkbox.fg_color(), checkbox2.fg_color());
-    EXPECT_EQ(checkbox.bg_color(), checkbox2.bg_color());
-    EXPECT_EQ(checkbox.selected(), checkbox2.selected());
+    UI_combobox combobox(Color(255, 255, 255), Color(0, 0, 0), {"option1", "option2"});
+    json j = combobox.to_json(0);
+    UI_combobox combobox2;
+    combobox2.from_json(j);
+    EXPECT_EQ(combobox.text(), combobox2.text());
+    EXPECT_EQ(combobox.fg_color(), combobox2.fg_color());
+    EXPECT_EQ(combobox.bg_color(), combobox2.bg_color());
+    EXPECT_EQ(combobox.selected(), combobox2.selected());
 }
diff --git a/tests/UI_dial.cpp b/tests/UI_dial.cpp
index 760a647..8e15283 100644
--- a/tests/UI_dial.cpp
+++ b/tests/UI_dial.cpp
@@ -4,7 +4,8 @@ TEST(UI_dial, to_from_json)
 {
     UI_dial dial("slider_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
     json j = dial.to_json(0);
-    UI_dial dial2(j);
+    UI_dial dial2;
+    dial2.from_json(j);
     EXPECT_EQ(dial.text(), dial2.text());
     EXPECT_EQ(dial.fg_color(), dial2.fg_color());
     EXPECT_EQ(dial.bg_color(), dial2.bg_color());
diff --git a/tests/UI_label.cpp b/tests/UI_label.cpp
index 4cec2fd..2a1c3f6 100644
--- a/tests/UI_label.cpp
+++ b/tests/UI_label.cpp
@@ -10,7 +10,8 @@ TEST(UI_label, to_from_json)
     EXPECT_EQ(j["fg_color"], "#000000FF");
     EXPECT_EQ(j["bg_color"], "#FFFFFFFF");
 
-    UI_label label2(j);
+    UI_label label2;
+    label2.from_json(j);
     EXPECT_EQ(label2.text(), "label_text");
     EXPECT_EQ(label2.fg_color(), Color(0, 0, 0));
     EXPECT_EQ(label2.bg_color(), Color(255, 255, 255));
diff --git a/tests/UI_led.cpp b/tests/UI_led.cpp
index 5e2a261..46e845b 100644
--- a/tests/UI_led.cpp
+++ b/tests/UI_led.cpp
@@ -4,7 +4,8 @@ TEST(UI_led, to_from_json)
 {
     UI_led led("led_text", Color(0, 0, 0), Color(255, 255, 255));
     json j = led.to_json(0);
-    UI_led led2(j);
+    UI_led led2;
+    led2.from_json(j);
     EXPECT_EQ(led.text(), led2.text());
     EXPECT_EQ(led.fg_color(), led2.fg_color());
     EXPECT_EQ(led.bg_color(), led2.bg_color());
diff --git a/tests/UI_slider.cpp b/tests/UI_slider.cpp
index 9ee2410..9fb34ea 100644
--- a/tests/UI_slider.cpp
+++ b/tests/UI_slider.cpp
@@ -4,7 +4,8 @@ TEST(UI_slider, to_from_json)
 {
     UI_slider slider("slider_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50, nullptr);
     json j = slider.to_json(0);
-    UI_slider slider2(j);
+    UI_slider slider2;
+    slider2.from_json(j);
     EXPECT_EQ(slider.text(), slider2.text());
     EXPECT_EQ(slider.fg_color(), slider2.fg_color());
     EXPECT_EQ(slider.bg_color(), slider2.bg_color());
diff --git a/tests/UI_textbox.cpp b/tests/UI_textbox.cpp
index 96b54d3..d748039 100644
--- a/tests/UI_textbox.cpp
+++ b/tests/UI_textbox.cpp
@@ -4,7 +4,8 @@ TEST(UI_textbox, to_from_json)
 {
     UI_textbox textbox("hint", Color(0, 0, 0), Color(255, 255, 255));
     json j = textbox.to_json(0);
-    UI_textbox textbox2(j);
+    UI_textbox textbox2;
+    textbox2.from_json(j);
     EXPECT_EQ(textbox.text(), textbox2.text());
     EXPECT_EQ(textbox.fg_color(), textbox2.fg_color());
     EXPECT_EQ(textbox.bg_color(), textbox2.bg_color());
diff --git a/tests/UI_thermo.cpp b/tests/UI_thermo.cpp
index b026e90..b23703f 100644
--- a/tests/UI_thermo.cpp
+++ b/tests/UI_thermo.cpp
@@ -4,7 +4,8 @@ TEST(UI_thermo, to_from_json)
 {
     UI_thermo thermo("thermo_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
     json j = thermo.to_json(0);
-    UI_thermo thermo2(j);
+    UI_thermo thermo2;
+    thermo2.from_json(j);
     EXPECT_EQ(thermo.text(), thermo2.text());
     EXPECT_EQ(thermo.fg_color(), thermo2.fg_color());
     EXPECT_EQ(thermo.bg_color(), thermo2.bg_color());