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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..
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==
* TF Card interface: MicroSD Card Slot (only supports CM4 module that without eMMC)
* 20Pin GPIO be reserved
* 1x fan interface: 4P-PH2.0 PWM 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 Toggl Toggle Switch (for function selection of USB device and CM4 device)
* Working Temperature: 0℃~80℃
* PCB Dimension: 70x45mm
==User Manual==
=== Hoow 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. 此处需要插入一张图片[[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 B '''down''' direction. 此处需要插入一张图片[[File:CM4-Stick-Dimension-Toogle-Switch.jpg|700px|dimension and toogle switch description of CM4 stick]]
2. Insert TF card
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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