View source for CM4 Stick

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[[File:IMG-2226.jpg|thumb|right|CM4 Stick]]
[[File:IMG-2232.jpg|thumb|right|CM4 Stick with CM4]]
[[File:IMG-2240.jpg|thumb|right|CM4 Sticker with CM4 & CM4 heatsink]]
[[File:BUTTON-LED.jpg|thumb|right|Circuit Diagram of CM4 Sticker - button & led]]
[[File:HDMI.jpg|thumb|right|Circuit Diagram of CM4 Sticker - HDMI]]
[[File:CSI.jpg|thumb|right|Circuit Diagram of CM4 Sticker - CSI]]
[[File:GPIO.jpg|thumb|right|Circuit Diagram of CM4 Sticker - GPIO]]
[[File:Circuit-Diagram.jpg|thumb|right|Circuit Diagram of CM4 Sticker]]
[[File:Dimensional-Drawing.jpg|thumb|right|Dimensional Drawing of CM4 Sticker]]

==Overview==
This CM4 Stick is an expansion board based on Raspberry Pi CM4. Provides a variety of expansion interfaces for the CM4 module, including upgrade interfaces, GPIO expansion, CSI, full size HDMI, TF card slot, USB 2.0, fan socket, etc..
With a small size, it is can be adapted to variety of applicantion.

When connected to the computer with USB-A OTG, it becomes a real USB flash drive.

Pls refer to [[C235]] if you need heatsink for your CM4.

Note:
# Must make sure that the CM4 module is correctly installed on the expansion board  CM4 stick before powering on.
# Raspberry Pi Compute Module 4(CM4）is not included in the packing list.
# <span style="color:red;">USB-A and USB-AF/USB-C ports cannot be used at the same time. </span>The USB-AF and USB-C power supply ports can be used at the same time.

==Features==
* 1 x Full-size HDMI 2.0 Interface
* 1x USB-A: OTG USB (used to upgrade and update Raspberry Pi Compute Module 4)
* 1x USB-AF: USB 2.0 High Speed socket, It is convenient for you to connect a keyboard or mouse. You can use a third-party USB-hub to expand more USB ports
* 1x USB-C: Type-C Power Port 5V/3A
* TF Card interface: MicroSD Card Slot (only supports CM4 module that without eMMC)
* 20Pin GPIO be reserved
* 1x fan interface: 4P-PH2.0 Fan Control Interface<span style="color:red;">（Not support pwm fan speed adjustment）
* 1 x CSI camera FPC connectors (22-pin 0.5mm pitch cable)
* 1x Reboot Button
* 1x Toggle Switch (for function selection of USB device and CM4 device)
* Working Temperature: 0℃~80℃
* PCB Dimension: 70x45mm

==User Manual==

=== How to use CM4 stick flashing OS into TF card===
* Install [https://github.com/raspberrypi/usbboot/raw/master/win32/rpiboot_setup.exe Rpi-boot Windows installer], download then double click it to setup. After the installation is complete, you can get a shortcut to '''rpiboot'''
* Move the 'TOGGLE SWITCH' of CM4 stick to A direction, then insert CM4 stick into your desktop computer, then run '''rpiboot''', You can find that the computer will add a logical drive letter.
[[File:CM4-STICK.jpg|500px|How to use the cm4 stick as a usb device]]

* Now, you use CM4 STICK as a normal USB device to burn firmware to it.

Since the CM4 STICK can also be used as a USB device. You don’t need to use an additional TF card reader. You can directly use the CM4 STICK to modify the config.txt file on your WINDOWS computer.

===How to use CM4 stick to start CM4 ===
1. Firstly, don’t forget to move the toggle switch to the '''down''' direction.

[[File:CM4-Stick-Dimension-Toogle-Switch.jpg|700px|dimension and toogle switch description of CM4 stick]]

2. Insert TF card

3. The USB interface is disabled to save power by default on the CM4 . To enable it you need to add dtoverlay=dwc2,dr_mode=host to the config.txt file, detail to refer to [https://datasheets.raspberrypi.org/cm4/cm4-datasheet.pdf CM4 datasheet]
 dtoverlay=dwc2,dr_mode=host

More reaspberry pi official documentation refer to [https://github.com/raspberrypi/documentation Official  Documentation]

[https://github.com/raspberrypi/usbboot/raw/master/win32/rpiboot_setup.exe Rpi-boot Windows installer] or refer to [https://github.com/raspberrypi/documentation/blob/master/hardware/computemodule/cm-emmc-flashing.md CM4 emmc flashing]

==Packing List==
1 x CM4 Stick shield

==Document==
* CAD DXF file: [[File:Cm4-stick-CAD-DXF.zip|DXF file for CM4 Stick]]
==FAQ==
Q1. The USB interface is not working?

A： Please refer to the above [How to use CM4 stick to start CM4]

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