diff --git a/firmware/README.md b/firmware/README.md
new file mode 100644
index 0000000..f0c4b42
--- /dev/null
+++ b/firmware/README.md
@@ -0,0 +1,19 @@
+# Building the firmware
+This is a small document for setting up a development environment to build the firmware. You'll need a couple things to get started.
+
+1. (Linux only) Install the [RPi Pico udev rules](https://github.com/raspberrypi/picotool/blob/master/udev/99-picotool.rules). Add the following rules:
+```
+SUBSYSTEM=="usb", \
+    ATTRS{idVendor}=="2e8a", \
+    ATTRS{idProduct}=="000c", \
+    TAG+="uaccess" \
+    MODE="660", \  
+    GROUP="plugdev"
+```
+
+2. Install the appropriate target toolchain: `rustup target add thumbv6m-none-eabi`.
+3. Install cmake for tool compilation.
+4. (Linux only) Install libudev-dev.
+5. Install tools: `cargo install flip-link`.
+5. Install tools: `cargo install --locked probe-rs-tools`. This is for installing firmware over Pico probe.
+6. Run `cargo run` to install.
diff --git a/firmware/src/modules/rgb.rs b/firmware/src/modules/rgb.rs
index 185dc50..e9adf9a 100644
--- a/firmware/src/modules/rgb.rs
+++ b/firmware/src/modules/rgb.rs
@@ -34,7 +34,7 @@ impl<'timer> RgbMod<'timer> {
 
         RgbMod {
             ws: ws,
-            brightness: 10,
+            brightness: 40,
             buffer: [(0, 0, 0).into(); RGB_LEN],
             timer: count_down,
         }
@@ -53,7 +53,7 @@ impl<'timer> RgbMod<'timer> {
             return;
         }
 
-        let t = ((t.duration_since_epoch().ticks() >> 12) % 360) as f32;
+        let t = ((t.duration_since_epoch().ticks() >> 14) % 360) as f32;
 
         for (i, led) in self.buffer.iter_mut().enumerate() {
             *led = hsv2rgb((t + (10 * (RGB_LEN - i)) as f32) % 360.0, 1.0, 1.0).into();
diff --git a/hardware-case/case.scad b/hardware-case/case.scad
index c2cc46d..35f8261 100644
--- a/hardware-case/case.scad
+++ b/hardware-case/case.scad
@@ -24,7 +24,7 @@ cmN = 3.3;
 // Face count on rounded objects
 $fn=32;
 // Case connector hole size
-ioHS = 20;
+ioHS = 11;
 // Case connector hole offset
 ioHO = cS-cmO-7;
 // Case connector hole buffer
@@ -241,7 +241,7 @@ module case_bottom() {
             square4(clS, cS-clS*2-cpW*2, clH) roundedsquare(cpM, cpM, cpH, cpR);
 
             // USB-C pillar
-            translate([0, ioHO-ioHS+ioHB, clH]) cube([clS, ioHS-ioHB*2, cpW+1.6]);
+            translate([0, ioHO-ioHS+ioHB, clH]) cube([1.5, ioHS-ioHB*2, 4]);
         }
 
         union() {
@@ -256,7 +256,7 @@ module case_bottom() {
             square4(cpF, cS-cpF, cpFH/2) cylinder(d1=cpFD, d2=cpFD-2, h=cpFH/2);
 
             // cutout for through hole components
-            translate([clS, ioHO-ioHS+ioHB+1, clH]) cube([10, ioHS-ioHB*2-2, cpH]);
+            translate([clS, ioHO-ioHS+ioHB, clH]) cube([10, ioHS-ioHB*2, cpH]);
         }
     }
 }
@@ -315,11 +315,12 @@ difference() {
     // cutout for io
     union() {
         // USB side
-        translate([0, ioHO-ioHS, clH]) cube([3, ioHS, 10]);
+        // translate([0, ioHO-ioHS+ioHB, clH]) cube([clS, ioHS-ioHB*2, cpW+1.6]);
+        // translate([0, ioHO-ioHS, clH]) cube([3, ioHS, 10]);
 
         // Debug pad side
-        ioHS2 = 23-1.5;
-        ioHO2 = cS-cmO-2.5;
+        ioHS2 = 23-3;
+        ioHO2 = cS-cmO-2.5-1.5;
         translate([cS-2.5, ioHO2-ioHS2, clH]) cube([2.5, ioHS2, 3.8]);
         translate([cS-12, ioHO2-ioHS2, clH]) cube([12, ioHS2, 3]);
     }