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Finally i found what is the problem. to upload the sketch, not only TX and RX pin is used, but DTR pin should be also connect to the RESET pin.
DTR >-------- | | --------- >RESET PIN
0.1 uf
now my problem is solved.
it only one com port in my pc which is COM7 and i have check it in Device manager, it belong to my FTDI usb to uart conveter.
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what is the proper baud rate? and how to set the baud rate for uploading sketch? as i know, baud rate can only change when we try to do serial com...
Hi All,
I have one original Arduino Uno which the FTDI chip was not work. so i decided to make my own custom arduino. Basically at my custom uno, there is no FTDI chip, i just pull the TX and RX to some header pin connector so i will plug my ftdi USB to UART converter to that particular header...
dont think so.. software wont work if there is no hardware.. i think it would be increasing of software developer.. but it would not cause the decreasing of hardware engineer..
Hi,
how can i measure the output of the sensor which rated 4 to 20mA with PIC ADC?
how the circuit gonna be in between the sensor output and the PIC ADC pin?
Thanks
hi.. i ussually use "timer" to handle the incoming data. here is the example i can give. it not the real code.
dim rx_data as string
Private Sub SerialPort_DataReceived()
rx_data = serialport1.readexisting
end sub
private sub timer1_tick
textbox1.text = rx_data
end sub
Hi, after further test, i figure out that the problem is cause by the Xbee Pro S1 (https://www.sparkfun.com/products/8742) that i used. after change it to non pro xbee s1 (https://www.sparkfun.com/products/8665). it work perfectly. anyone have any idea why it happen like that?
im using pic16f887
mikro c version 6.0
i dont have any problem with hardware uart, hardware uart is connected to the sensor.
software uart is connected to xbee. yes i already configure xbee and it manage to communicate each other.
but when i plug xbee to my board, no data was received.
i try...
Hi,
I have a problem with my software uart, i dont receive any data at my computer after transmitting via soft uart. is that the problem cause by the unstable internal oscillator? here my code written using mikro c.
char input[4];
char celcius[4];
char error,byte_read;
unsigned int...
guys,
thanks for reply, i found this piezo sensor, it can genarate up to 90v VAC https://www.sparkfun.com/products/9196.
im not so sure how much watt of power it can produce, however im still figure it out how to store the energy? im thingking off using the solar charger. But for sure i need to...
hye all,
im doing research in generating electricity from vibration or pressure. I found that piezo element in piezo buzzer can generate mili volt of voltage. it not practical because i need a lot of piezo element to get minimum of 18v. is there any other component that can generate an...
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