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Recent content by sushant_21

  1. S

    [General] 7 segment issue, dp doesn't work on 12v

    hi Dana thanks for reply, here id the code // d1, d2, d3, d4, d5,d6, d7, d8, d9 const uint32_t DispLookup[] = {18, 19, 20, 21, 22, 23, 24, 25 ,26}; #define DISP_SEL_ENABLE 1 #define DISP_SEL_DISABLE 0 #define DISP_PORT 2 #define CS_PORT 1 void...
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    [General] 7 segment issue, dp doesn't work on 12v

    i have added a 1.2K resistor at DP but there is no change. i had done this earlier also, i had tried 470ohm, 1.2k or 3.3k resistor. the global resistor R39 - R47 are to control brightness of 7seg, theres possibility that row1 is red and row2 is green 7segment, so both will have different resistor.
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    [General] 7 segment issue, dp doesn't work on 12v

    (Help) I am having problem in seven segment, the problem is when a-g segment glow, the dp is not glowing . DP only glow when rest of segments are off. I have tried almost all that I can do from firmware, I tried setting output port setting to open drain , disabling internal pull up. But it...
  4. S

    not getting up link on Ethernet with Esp32 controller

    Thanks for responding, Sorry i didnt add this earlier What we don´t see: * your schematic - Added * your PCB layout - Added * your code - this the code https://github.com/espressif/esp-idf/tree/master/examples/ethernet/basic , i just configured it for my PCB(just edited reset pin 32 for my...
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    not getting up link on Ethernet with Esp32 controller

    Hi all, I have an issue regarding LAN with esp32, So i have got designed a hardware with esp32 and dp83848 phy for ethernet connection. The problem is i dont get Link Up from phy. I am running esp32 example code PHY reset pin is 32. this is log output from board, it just stops at Ethernet...
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    Is it possible to send sql DB request from micro-controller over TCP ?

    Hi, I wish to know is there any way we can directly send query or data to sql database from micro-controller ( cortex M3 ) over TCP socket. I have done some project where we use HTTP server , and POSTing data to HTTP server and then server adds the same to sql database. but just as curiosity...
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    Need help to interface TFT LCD with HX8357 with MCU Cortex M3

    Sorry its AVR 256. - - - Updated - - - i did but those are not accessible for user, i have added the image for your reference, ONLY SPI pin out and Data bus pin out is available
  8. S

    Need help to interface TFT LCD with HX8357 with MCU Cortex M3

    Hi, thanks for reply, i got it running but not by serial, i used parallel bus DB0-DB15, it was harding finding API, i got one with for AVR ARM controller, so LCD is working, it just i cant get it running on SPI, as u said its good idea to read but to my bad luck i found non API for this LCD...
  9. S

    Nodemcu client update

    This is hunch, as i can see your data variable is integer, so you will either need to use type cast like client.println(((float)data[0] / 10.0)); or you can use temporary float variable for calculating float result float temp; temp = data[0]; temp /= 10; client.println(temp);
  10. S

    Need help to interface TFT LCD with HX8357 with MCU Cortex M3

    Thanks for your time and thoughts, Yes i also thought checking SPI, i removed SPI and SHORTED MOSI and MISO pin, i could see the send frame in receive d buffer. so actually my concern is how do u check slave when there is not read operation ? all the library i have checked has no read operation.
  11. S

    Need help to interface TFT LCD with HX8357 with MCU Cortex M3

    HI, This is sushant, i have the 3.2 inch TFT LCD with HX8357C controller **broken link removed**. I have developed a custom PCB using LPC1768, i have attached Schematic for controller and image for Interface Connector Change in schematic is RESET pin has been disconnected from MCU RESET and...
  12. S

    need to read low current input 10uA-30uA

    i was reading about Current sense Amplifier, as in image, so i thought the Rs to be connected between IN+ and IN- as differential ADC. But again i stuck with one solution, your question WHY made me again think, and i came up with this, if i replace the SMBJ diode in my circuit with 1Kohm as you...
  13. S

    need to read low current input 10uA-30uA

    Thanks for your time and thoughts @KlausST Sorry for mistake, i was thinking about current hence wrote mA. Yeah i got the idea of shunt resistor, but i will have to use ADC as differential ended in ADC. Sad part is i left other ADS1118 pins floating, and they are very tiny. Thanks for help i...
  14. S

    need to read low current input 10uA-30uA

    HI, this is sushant, i had designed a circuit for client to read analog input, using ADS1118 IC, the circuit was design to read 4-20mA,0-5V and 0-200mV. Now the requirement has been changed and new input is added which is 10uA-30uA. i had designed circuit as 4-20mA/0-5V to Channel 0 of ADC and...
  15. S

    Need hardware suggestion for Live streaming using camera project

    Thanks for reply andre and your thoughts The purpose is like to build endoscope or bore scope equipment. i really dont wanna go for rashpberry, i was looking for high end controller, i would like to stick with controller if there is necessity of processor i would like to use NXP or texas...
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