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by raspTest
Wed Sep 19, 2018 3:31 pm
Forum: Troubleshooting
Topic: Problem for undervoltage
Replies: 19
Views: 4180

Re: Problem for undervoltage

it seems to be solved! I connected the arduino's power supply of the externally, and then I connected arduino and raspberry through the usb for communication. for now the rasp has not launched any warnings on the voltage!

Thanks!!!
by raspTest
Wed Sep 19, 2018 12:36 pm
Forum: Troubleshooting
Topic: Problem for undervoltage
Replies: 19
Views: 4180

Re: Problem for undervoltage

thanks a lot! i will ltry !!!
by raspTest
Wed Sep 19, 2018 8:49 am
Forum: Troubleshooting
Topic: Problem for undervoltage
Replies: 19
Views: 4180

Re: Problem for undervoltage

On system's logs, I have a series of this messages:
Under-voltage detected! (0x00050005)
Voltage normalised (0x00000000)
rpi_firmware_get_throttled: 3 callbacks suppressed
by raspTest
Wed Sep 19, 2018 7:56 am
Forum: Troubleshooting
Topic: Problem for undervoltage
Replies: 19
Views: 4180

Problem for undervoltage

Hi everyone! I'm developing a system that uses the rxtx libraries of java to communicate with an arduino, via serial with usb, and with a webcam (using opencv). If I launch everything from the computer, the program does not have problems even after a whole day. If I use the rasberry as a computer, I...
by raspTest
Mon Oct 17, 2016 8:00 pm
Forum: Automation, sensing and robotics
Topic: anti- shoplifting
Replies: 0
Views: 330

anti- shoplifting

Hello everyone, I would like to realize a project a kind of anti-theft system available in stores. I saw that work in this way: at the sides there is a transmitter and a receiver that transmit signals in a certain sequence. interposing a metal / magnetic stripe the frequency changes. so you understa...
by raspTest
Sun Oct 02, 2016 9:17 am
Forum: Automation, sensing and robotics
Topic: mpu9250 with arduino
Replies: 2
Views: 879

Re: mpu9250 with arduino

and something about DMP functionality ?
because i read that they implements a lot of motion sensing like orientation, changing on pitch roll .. , pedometer, and go on.
but you must setting some register (like the pdf map registers says) and there is no clear documentation on the procedure
by raspTest
Sat Oct 01, 2016 8:19 am
Forum: Automation, sensing and robotics
Topic: mpu9250 with arduino
Replies: 2
Views: 879

mpu9250 with arduino

hi! I searched the internet about mpu9250 and there are many libraries, also in github, each with different steps in the calibration and show the values from the sensors. I would just get the acceleration values and the rotation along the z-axis, ie its orientation in the environment (using gyroscop...
by raspTest
Tue Sep 27, 2016 4:22 pm
Forum: Automation, sensing and robotics
Topic: question about accelerometer
Replies: 0
Views: 300

question about accelerometer

hi everyone, i'm note sure is the correct section of the forum for this question... i'm reading x,y,z value from an accelerometer gy61 adxl335 and i think thay are strange.. this because i apply the filter , according with the tutorial of adafruit, and i have this value " - ADC value X: 3071 -- conv...
by raspTest
Sun Sep 25, 2016 11:11 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: read data from i2c sensor 6-axis
Replies: 0
Views: 322

read data from i2c sensor 6-axis

hi, i want to read the value of acceleromer and gyroscope from a sensor of 6-axis. this sensor will be mounted on an xbee XB24CZ7PISB003 . i found this function http://exsilium.github.io/xbee-sdk-doc/group__api__i2c.html but i don't am sure about if i can use one sensor with i2c protocol on my xbee....
by raspTest
Fri Sep 23, 2016 7:00 pm
Forum: C/C++
Topic: address from string to uint_16
Replies: 9
Views: 1299

Re: address from string to uint_16

i finally resolved the problem! so this is the final solution, and it works
addr64 add={ { 0x00, 0x.... } }; //explicit inizialitation of the address
xbee_cmd_set_target(at_cmd_handler, &add,WPAN_NET_ADDR_UNDEFINED);


thanks a lot!
by raspTest
Fri Sep 23, 2016 5:37 pm
Forum: C/C++
Topic: address from string to uint_16
Replies: 9
Views: 1299

Re: address from string to uint_16

I pass the uint16 inside the address variable. It has this data Fields uint8_t b [8] uint32_t l [2] Uint16_t u [4] So passing add.u i am passing the uint16_t ...but this is and array of four uint16... Maybe is this the problem? The official description of addr64 is: Typedef used to hold a 64-bit IEE...
by raspTest
Fri Sep 23, 2016 12:33 pm
Forum: C/C++
Topic: address from string to uint_16
Replies: 9
Views: 1299

Re: address from string to uint_16

i have correct the error with the string
by raspTest
Fri Sep 23, 2016 12:23 pm
Forum: C/C++
Topic: address from string to uint_16
Replies: 9
Views: 1299

Re: address from string to uint_16

yes, it is that file. i must have the address in format uint16_t , but i have the string. so i try to create an address object and i try to use the parse method.. the method addr_parse is: int addr64_parse( addr64 *address_be, const char FAR *str) in codewarrior with one error i can't know the other...
by raspTest
Fri Sep 23, 2016 10:14 am
Forum: C/C++
Topic: address from string to uint_16
Replies: 9
Views: 1299

Re: address from string to uint_16

I have attached the problem on image
by raspTest
Fri Sep 23, 2016 8:22 am
Forum: C/C++
Topic: address from string to uint_16
Replies: 9
Views: 1299

address from string to uint_16

hi, i need to set a specific network address for send an at command remote on codewarrio for a xbee module.. i need a uint16_t network_address , but i know only the string in the format "aa-aa- ...." . i also try to use the function addr64_parse: addr64 add; char addrbuf[ADDR64_STRING_LENGTH]="aa-aa...
by raspTest
Thu Mar 24, 2016 1:26 pm
Forum: Beginners
Topic: MLX90614 sensor
Replies: 1
Views: 617

MLX90614 sensor

hi.. i want to read temperature' values from this sensor ( MLX90614 ) , but i can't find any tutorial on internet.
is there anyone who can give me some guidance or a guide? thanks a lot

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