fix poweroff and update case

Author: jamescodesthings

data/blog/2026-05-01-zerocalc.md

@@ -54,6 +54,22 @@ _tldr;_ if you plug the male headers into the female and sit the adapter board o
 There are other optional features like external usb, and a custom case. Most of the details of those can be found
 on [Michael's Printables project](https://www.printables.com/model/1399739-picocalc-zero-mod-case).
 
+# Shameless Plug: Handle, stand, grip for the ZeroCalc
+
+<div class="image-carousel">
+<a href="../assets/blog-images/v2/front.png"><img src="../assets/blog-images/v2/front.png" alt="Front"></a>
+<a href="../assets/blog-images/v2/side.png"><img src="../assets/blog-images/v2/side.png" alt="Side"></a>
+<a href="../assets/blog-images/v2/back.png"><img src="../assets/blog-images/v2/back.png" alt="Rear"></a>
+</div>
+
+If you like the grip in the cover image, you can find it on at Makerworld: [PicoCalc Grip Stand Handle](https://makerworld.com/en/models/2759394-picocalc-grip-stand-handle-comfy-edition).
+
+If you like it, check out the other things I make!
+
+Heads up; there's a version you can print without the `pico-8` logo on the front. It's plate 2 in the print profile, and the `.step` files are included in the 3D model files if you want to modify it yourself.
+
+Pictured and link is version 2 of the handle, that I made more comfy!
+
 # Flashing the SD Card
 
 Source: [github.com/nibheis/picocalc_trixie: Step 1](https://github.com/nibheis/picocalc_trixie#step-1-install-raspberry-pi-os-lite-64-bit-debian-trixie-using-the-raspberry-pi-imager)
@@ -316,27 +332,53 @@ sudo nano /usr/local/bin/shutdown
 
 # Optional: Power off shutdown script
 
-I haven't had this consistently work but I'd like you to know it exists: https://github.com/nibheis/picocalc_trixie#step-7-make-the-pi-turn-off-the-main-board-when-powering-off
+## Fix problems with the original commands
 
-tldr; this service should trigger the pi to send a power off signal to the mainboard when the Pi shuts down.
+1. Enable i2c in `raspi-config`
 
-For me, it hasn't been; but that's not a huge issue. Once it's shut down you hold the power button for a few seconds and the green light on the ZeroCalc will turn off.
+```
+# Run raspi-config
+sudo raspi-config
+# Navigate to "Interface Options"
+# Select "I2C" and enable it
+# Finish and reboot
+```
 
-If I get this fixed I'll add an update here.
+1. Install `i2c-tools`
 
-# Shameless Plug: Handle, stand, grip for the ZeroCalc
+```
+sudo apt install i2c-tools -y
+```
 
-<div class="image-carousel">
-<a href="../assets/blog-images/cover-tall.png"><img src="../assets/blog-images/cover-tall.png" alt="Front"></a>
-<a href="../assets/blog-images/side-on.png"><img src="../assets/blog-images/side-on.png" alt="Side"></a>
-<a href="../assets/blog-images/rear-view.png"><img src="../assets/blog-images/rear-view.png" alt="Rear"></a>
-</div>
+Follow the original guide here: [Picocalc Trixie Guide](https://github.com/nibheis/picocalc_trixie#step-7-make-the-pi-turn-off-the-main-board-when-powering-off)
 
-If you like the grip in the cover image, you can find it on at Makerworld: [PicoCalc Grip Stand Handle](https://makerworld.com/en/models/2748402-picocalc-grip-stand-handle).
+## EZ Mode
 
-If you like it, check out the other things I make!
+1. Enable i2c in `raspi-config`
 
-Heads up; there's a version you can print without the `pico-8` logo on the front. It's plate 2 in the print profile, and the `.step` files are included in the 3D model files if you want to modify it yourself.
+```
+# Run raspi-config
+sudo raspi-config
+# Navigate to "Interface Options"
+# Select "I2C" and enable it
+# Finish and reboot
+```
+
+2. Clone my fork of the repo with a full install script
+
+```
+git clone git@github.com:jamescodesthings/picocalc_trixie.git
+```
+
+3. Run the install script for the shutdown utility
+
+```sh
+cd picocalc_trixie
+cd poweroff
+./install
+```
+
+_note: if you run it from one of the parent directories the path to the service and script file won't be right._
 
 # Resources