diff --git a/Justfile b/Justfile
index f35571c..c607627 100644
--- a/Justfile
+++ b/Justfile
@@ -1,8 +1,50 @@
 set export := true
 
-default: check
+default: deps check
 
-check:
+# Check and install dependencies via rustup
+deps:
+	@just _setup-rustup
+	@just _setup-rust-toolchain
+	@just _setup-targets
+	@just _setup-cargo-binutils
+	@just _check-python
+
+_setup-rustup:
+	@if ! command -v rustup >/dev/null 2>&1; then \
+		echo "Installing rustup..."; \
+		curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y; \
+		echo "Please run: source ~/.cargo/env"; \
+		echo "Then run 'just deps' again"; \
+		exit 1; \
+	fi
+
+_setup-rust-toolchain:
+	@if ! rustc -vV >/dev/null 2>&1; then \
+		echo "Installing stable Rust toolchain..."; \
+		rustup default stable; \
+	fi
+
+_setup-targets:
+	@if ! rustup target list --installed | grep -q "thumbv6m-none-eabi"; then \
+		echo "Installing thumbv6m-none-eabi target..."; \
+		rustup target add thumbv6m-none-eabi; \
+	fi
+	@if ! rustup component list --installed | grep -q "llvm-tools"; then \
+		echo "Installing llvm-tools component..."; \
+		rustup component add llvm-tools; \
+	fi
+
+_setup-cargo-binutils:
+	@if ! cargo objcopy --version >/dev/null 2>&1; then \
+		echo "Installing cargo-binutils..."; \
+		cargo install cargo-binutils; \
+	fi
+
+_check-python:
+	@command -v python3 >/dev/null 2>&1 || (echo "Missing: python3 - please install via nix" && exit 1)
+
+check: deps
 	cd rp2040 && cargo check --target thumbv6m-none-eabi
 
 test: