X715 Software - Revision history

Admin: Replace with

2026-05-27T02:13:52Z

Replace <comments/> with <comment-streams />

← Older revision		Revision as of 10:13, 27 May 2026
Line 48:		Line 48:

	<!--Add review function! -->		<!--Add review function! -->
	<comment-streams />		<comment-streams id="main" />

	<!--Please choose the -->		<!--Please choose the -->

Admin: Replace with

2026-05-26T12:08:00Z

Replace <comments/> with <comment-streams />

← Older revision		Revision as of 20:08, 26 May 2026
Line 48:		Line 48:

	<!--Add review function! -->		<!--Add review function! -->
	<~~comments~~ />		<comment-streams />

	<!--Please choose the -->		<!--Please choose the -->

Harry at 03:24, 30 April 2026

2026-04-30T03:24:47Z

← Older revision		Revision as of 11:24, 30 April 2026
Line 1:		Line 1:
			{{Deprecated\|Please refer to [[X715-script]].}}
	{{GD Template Impl}}		{{GD Template Impl}}
	This guide is only for X715 V1.0 shield based on RASPBIAN.		This guide is only for X715 V1.0 shield based on RASPBIAN.

Harry: /* How to control PWM fan speed */

2023-11-13T02:47:07Z

How to control PWM fan speed

New page

{{GD Template Impl}}
This guide is only for X715 V1.0 shield based on RASPBIAN.

==How to control PWM fan speed==
The PWM fan is not rotating when X715 is connected to PI 4, we need to to install the pwm fan control script

#fan control code need pigpiod library, so we need to install it firstly.
sudo apt-get update
sudo apt-get install -y pigpio python3-pigpio python3-rpi.gpio
sudo systemctl enable pigpiod
git clone https://github.com/geekworm-com/x715

//reboot to enable pigpiod
sudo reboot

cd ~
python3 /home/pi/x715/pwm_fan_control.py&

Then the x715 fan will start working.

But we hope that the script can be executed automatically when the Raspberry Pi board boots, we can use crontab system command to achieve it. please refer to the following

== How to start PWM fan when pi 4 boots==
The following comment is from [[X735 V2.5 Software]]

sudo crontab -e

[[File:Crontab-step1.png]]

Choose "1" then press Enter

Add a line at the end of the file that reads like this:

'''''@reboot python3 /home/pi/x715/pwm_fan_control.py'''''

Please note the path of this file.

[[File:Crontab-step2.png]]

Save and exit (CTRK + O and ENTER to save it). In nano editor, you do that by hitting CTRL + X, answering Y and hitting Enter when prompted.

== How to read the fan RPM?==
please refer to /home/pi/x715/read_fan_speed.py, and this is only show how to get the fan speed every second, run the following command.
sudo python3 /home/pi/x715/read_fan_speed.py

Return to [[X715]]


<comments />




[[Category:Product Manual]]
[[Category:Raspberry pi]]
[[Category:Knowledge]]