Search found 34 matches

by hong.jiang
Mon May 21, 2018 10:41 am
Forum: Raspberry Pi
Topic: No HDMI audio output after restart
Replies: 1
Views: 122

Re: No HDMI audio output after restart

Hi there: In some rare cases, it is necessary to edit config.txt to force HDMI mode (as opposed to DVI mode, which does not send sound). You can do this by editing /boot/config.txt and setting hdmi_drive=2, then rebooting for the change to take effect. https://www.raspberrypi.org/documentation/confi...
by hong.jiang
Mon May 21, 2018 10:13 am
Forum: ReSpeaker Core v2
Topic: ntp server settings
Replies: 1
Views: 35

Re: ntp server settings

Hi there:
This is the root permissions are not opened, you can enter the command.
sudo passwd root
And then set the password to do it
by hong.jiang
Mon May 21, 2018 10:04 am
Forum: ReSpeaker Core v2
Topic: Respeaker is not available via bluetooth
Replies: 3
Views: 38

Re: Respeaker is not available via bluetooth

Hi there:
cd /lib/systemd/system/
Find the file "brcm.service",Change the inside bcm43438a0.hcd to bcm43438a1.hcd,And then reboot
by hong.jiang
Thu May 17, 2018 10:09 am
Forum: Grove
Topic: ID Device
Replies: 1
Views: 167

Re: ID Device

Hi there:
The device ID can be found in RH_RF95.h in the Grove_LoRa_433MHz_and_915MHz_RF-master directory of the library.
by hong.jiang
Mon May 14, 2018 2:19 pm
Forum: Grove
Topic: measure the level of resins
Replies: 2
Views: 222

Re: measure the level of resins

Hi there:
Can you tell me specifically about your application environment and the distance you need to measure? Is it infrared or ultraviolet?
by hong.jiang
Mon May 14, 2018 2:06 pm
Forum: Grove
Topic: Choice of low noise and high temp stability magnetometer
Replies: 2
Views: 160

Re: Choice of low noise and high temp stability magnetometer

Hi there:
Sorry, there are no alternative products .
by hong.jiang
Mon May 14, 2018 10:28 am
Forum: Grove
Topic: Air qualitiy sensor v1.3 with alarm
Replies: 1
Views: 165

Re: Air qualitiy sensor v1.3 with alarm

Hi there: * AirQuality Demo V1.0. connect to A0 to start testing. it will needs about 20s to start * By: http://www.seeedstudio.com */ #include"AirQuality.h" #include"Arduino.h" AirQuality airqualitysensor; int Tast = 2; #define LED 13 const int Sum = 3; #define Red 5 #define Yellow 6 #define Green ...
by hong.jiang
Wed May 09, 2018 9:35 am
Forum: Grove
Topic: Verry disapointed with seeduino lora gps
Replies: 3
Views: 187

Re: Verry disapointed with seeduino lora gps

Hi there
This is my job. You needn't be polite. I wish you every success.
by hong.jiang
Tue May 08, 2018 1:17 pm
Forum: Grove
Topic: Possible bug on Grove Pi
Replies: 3
Views: 195

Re: Possible bug on Grove Pi

Hi there
Please submit your question here. https://forum.dexterindustries.com/