Seeedstudio Forum

Hi everyone, The past few weeks have gone really well using the canbus shield v1.2 for pulling a can dump from both my pontiac and my friends FRS. I was even able to broadcast RPM back to the pontiac and have it change the tach with the engine off. Currently, I have the electronic steering system o...

Hi all, I have a seeed canbus shield v2.0 attached on an arduino uno. My project is to send several data from sensors (analog/digital/i2c) from arduino to an external ECU via can bus protocol. At the moment I have managed to connect the shield using can L & can H and declare an identifier as 0 (zer...

The Seeed product page for the Stalker v3.1 says: "I2C Pin header (operation voltage is selectable: 5.0V or 3.3V)" How is the voltage selectable? There's no switch or pad to disable the level shifter? Can this be done or is this spec in error? Hi, When they say selectable then it means then it will...

Good evening, I have this Shield NFC( http://wiki.seeedstudio.com/NFC_Shield_V2.0/ ) that has been running for almost a year on an arduino UNO. I recently acquired a MEGA Arduino to expand the possibilities of my project. The NFC shield has benefited from the modifications indicated in the wiki to ...

Hi. Currently, I encountered the issue regarding uploading sketches to seeeduino lorawan via arduino ide. The error message i get : 'Arduino: 1.8.7 (Windows 10), Board: "Seeeduino LoRaWAN" C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Ar...

milanvujovic wrote: ↑

Thu Jan 10, 2019 8:14 pm

Hi,

Is there a formula for conversion from analog reading value to lux value?

No you cannot convert the analog data of light to Lux but if you want to get the Lux values use digital Light sensor.
http://wiki.seeedstudio.com/Grove-Digital_Light_Sensor/

I hope it will help you.

Hello, Using the sunlight sensor module with an AdaFruit Feather M0 and currently only running the Demo example to verify functionality. The visible light value hovers around 620 lm regardless if there is visible light or not. Placing my finger over the vis sensor does not result in any change to t...

Hi, I am using seeeduino. Is it normal the following code to still produce the same values, regardless of whether or not I have the sensor connected? const int GSR=A0; void setup(){ Serial.begin(9600); } void loop(){ Serial.println(analogRead(GSR)); } I am also trying to follow the wiki tutorial, b...

Hi, The emojis are stored in the firmware of the driver and when you call it from the code it gets the emoji data via I2C communication. void GroveTwoRGBLedMatrixClass::displayEmoji(uint8_t emoji, uint16_t duration_time, bool forever_flag) { uint8_t data[5] = {0, }; data[0] = I2C_CMD_DISP_EMOJI; dat...

Hi, Welcome to the forum. Basically RL is (Load Resistance) and it is used to compute air resistance. As in the code it is considering that sensor is placed in the clean atmosphere that's why RL is considered to be 1. Reference: float RS_air; // Get the value of RS via in a clear air RS_air = (5.0-s...