diff --git a/app/boards/rh02_plus_2026_stm32g431xx.conf b/app/boards/rh02_plus_2026_stm32g431xx.conf
new file mode 100644
index 00000000..aa1c08ab
--- /dev/null
+++ b/app/boards/rh02_plus_2026_stm32g431xx.conf
@@ -0,0 +1,9 @@
+# SPDX-FileCopyrightText: Copyright (c) 2026 nullstalgia
+#
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_CANNECTIVITY_USB_SELF_POWERED=n
+
+# The two lines below are needed to reduce flash usage
+CONFIG_LTO=y
+CONFIG_ISR_TABLES_LOCAL_DECLARATION=y
diff --git a/app/boards/rh02_plus_2026_stm32g431xx.overlay b/app/boards/rh02_plus_2026_stm32g431xx.overlay
new file mode 100644
index 00000000..2952f2da
--- /dev/null
+++ b/app/boards/rh02_plus_2026_stm32g431xx.overlay
@@ -0,0 +1,28 @@
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2026 nullstalgia
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/dt-bindings/gpio/gpio.h>
+#include "../app.overlay"
+
+/ {
+	cannectivity: cannectivity {
+		compatible = "cannectivity";
+		timestamp-counter = <&counters2>;
+
+		channel0 {
+			compatible = "cannectivity-channel";
+			can-controller = <&fdcan1>;
+			state-led = <&blue_led>;
+			activity-leds = <&purple_led>;
+		};
+	};};
+
+&timers2 {
+	st,prescaler = <159>;
+	counters2: counter {
+		status = "okay";
+	};
+};
diff --git a/app/boards/rh02_stm32f072xb.conf b/app/boards/rh02_stm32f072xb.conf
new file mode 100644
index 00000000..5d33c7fd
--- /dev/null
+++ b/app/boards/rh02_stm32f072xb.conf
@@ -0,0 +1,8 @@
+# SPDX-FileCopyrightText: Copyright (c) 2026 nullstalgia
+#
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_CANNECTIVITY_USB_SELF_POWERED=n
+CONFIG_CAN_FD_MODE=n
+CONFIG_CAN_STM32_BXCAN_MAX_STD_ID_FILTERS=1
+CONFIG_CAN_STM32_BXCAN_MAX_EXT_ID_FILTERS=1
diff --git a/app/boards/rh02_stm32f072xb.overlay b/app/boards/rh02_stm32f072xb.overlay
new file mode 100644
index 00000000..3889d9fb
--- /dev/null
+++ b/app/boards/rh02_stm32f072xb.overlay
@@ -0,0 +1,31 @@
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2026 nullstalgia
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/dt-bindings/gpio/gpio.h>
+#include "../app.overlay"
+
+/ {
+	cannectivity: cannectivity {
+		compatible = "cannectivity";
+		timestamp-counter = <&counter2>;
+
+		channel0 {
+			compatible = "cannectivity-channel";
+			can-controller = <&can1>;
+			activity-leds = <&led_rx &led_tx>;
+		};
+	};
+};
+
+&timers2 {
+	status = "okay";
+	st,prescaler = <47>;
+
+	counter2: counter2 {
+		compatible = "st,stm32-counter";
+		status = "okay";
+	};
+};