- Topic: APC220 Wireless RF ModulesYou Reply:
Hello, sozer
What is your problem with APC220? About RF-MAGIC parameter setting?
Here is wiki link, we have updated the Tutorials.
https://www.dfrobot.com/wiki/index.php/A ... e_RF-magic - Topic: DFR0026, light sensor moduleYou Reply:
Hi, wenfangsong
LDR is a type of semiconductor and its conductivity changes with proportional change in the intensity of light.
It means the resistance value will change with the light.The light is higher, the value is lower.And in a similar way, the lower, the higher.
the theory:http://wiki.answers.com/Q/What_is_the_p ... ion_of_LDR
And you know. It is a non linear sensor.so it is not easy to read the lux ,except you have a non linear relationship table.
I hope I can help you - Topic: RN-XV WiFly ModuleYou Reply:
Hi, pandora
I have modified the wiki code. The old version has something wrong.
https://www.dfrobot.com/wiki/index.php/W ... ample_Code
- You Reply:
The code has been already released.
You could check this
https://www.dfrobot.com/image/data/DRI0027/Slave%20code%20for%20deeper%20development_update.zip - You Reply: The Arduino board on Lattepanda is Leonardo, not UNO, try to replace Serial port with Serial1 port. If you did, try to read the hex data from the serial port.
- Topic: Rplidar a1 filesYou Reply: It seems that they haven't such function for now. The SDK only provides a visual interface, you can get the raw data from the serial port. Try to make a secondary development base on the raw data. Or maybe you can contact their tech support: [email protected] and see whether they have such function.
- You Reply: Generally, I'll suggest you to make a holder to keep the the back away from the solution. It rely on the infrared effect to detect the turbidity. Just make sure the probe has been immersed.
- You Reply: I guess this is a trick by the AT command. Please check its wiki AT command. There are two line: AT+USBDEBUG = ON/OFF AT+BLUNODEBUG = ON/OFF. Please check what is the status of the BLUNODEBUG? Is it ON?
- You Reply: I guess this is a trick by the AT command. Please check its wiki AT command. There are two line: AT+USBDEBUG = ON/OFF AT+BLUNODEBUG = ON/OFF. Please check what is the status of the BLUNODEBUG? Is it ON?
- You Reply: Hi,
What is about adding a "while(1);" sentence in the loop to make it work only one time - You Reply: Why not a refund or replacement directly? They are very kind.
- You Reply: Why not a refund or replacement directly? They are very kind.
- You Reply: Maybe the motor is also damaged. Do you have a multimeter? you can measure the output voltage of the motor driver.
If you don't, you can exchange two motors, and see whether it will happen on the other port. - You Reply: I just raw a post about FIT0441. The PWM frequency should be 20~30KHz. And the PWM value looks inversed.
I need to recheck it with the manufacturer after holiday. - You Reply: I just raw a post about FIT0441. The PWM frequency should be 20~30KHz. And the PWM value looks inversed.
I need to recheck it with the manufacturer after holiday. - Topic: Out of stock!?You Reply: It will back on February.
- You Reply:
About February - You Reply: If this is a hardware, you can mail to techsupport team:make_clickable_callback(MAGIC_URL_EMAIL, ' ', '[email protected]', '', '') for the replacement or anything else.
- You Reply: The firmware has been 1.9.7 now......
- You Reply: It will be next version. You know it has been Bluetooth 4.2 now.