1. K


    I have been trying to use the USB2244 on a board but i can't seem to get it working and I am not sure what the problem is. I have went over and over the datasheet but can't seem to figure out what i'm missing . I have attached my schematics, I have verified i have 3.3V, and also that the 1.8...
  2. vishweshgm

    Interfacing MCP41HVX1 with PIC16F

    Hello, I am trying to replace a potentiometer in my project with MCP41HVX1 so that I can control the output voltage of LM317 regulator. My current LM317 circuit is as below: I use 2pins of J2 POT (between ground and wiper) to vary the voltage output of LM317 regulator. When POT has 0Ω...
  3. O

    PIC18F47Q10 SPI Trouble SOLVED

    Hello, Can anyone help me understand why my firmware hangs here? I may have other W5500 issues but I know, at least at this moment, I cannot communicate with the chip over SPI. For some reason, SSP1IF never goes high. Also, I tried the same code using SPI2 and still have the same behavior. The...
  4. D

    Proteus x Mplab Source Code

    Hi guys. What is the difference between these two procedures for the reset and interrupt vector. One in mplab and one in the Proteus? org 0x00 ;reset vector goto Start org 0x04 ;interruption vector goto Start PGM code 0x0 Goto Start ORG 4 ;some code here PGM code Start
  5. ashokraj

    For a fpga, how can i determine maximum number of pins I can use for pwm ?

    Hi, I come from the background of microcontroller design. I am learning fpga design. Usually in the ucontrollers the total number of pwm is limited as per the vendors. In FPGA how can i determine the maximum number of pwm I can drive from a fpga. For example, currently i am working with...
  6. E

    PWM configuration with Timer2

    i want to use pwm in my project. I am using pic16f18875 controller and xc8 compiler. i have configured the pwm and i was configuring timer 2 for that. But i am not getting the pwm output. I am trying to understand the use of register TxRST in timer.I want to understand the use of TxRST...
  7. Stavros Avramidis (asder)

    USB Reclocker with a USB3503

    Hello, I want (/try) to make a usb "reclocker" with a microchip USB3503 (https://www.microchip.com/wwwproducts/en/USB3503). I tried to copy their reference design a bit. I have some questions. 1. If the design seems fine ? 2. I suppose there won't be a serious ground loop if I use a floating...
  8. E

    Problem while flashing PIC Controller with PICKIT3

    i am facing problem while programming PIC16F18875 using pickit3. I am using mplab x on windows 10. I bought new chip and and from first i am getting problem. currently i am giving power from pickit3 which is approx, 4.5V. I checked the connection for MCLR, VDD, VSS, PGD and PGC pin. I have...
  9. V

    How to increase range of a BLE chip

    Hello I have an RN4871 Bluetooth chip and integrated it with my micro. The chip is scanning for nearby BLE devices and reporting them to the host micro via UART. However, I see that the range of this chip is just 10 m. I could buy RN4870 and increase the range to 50m, but that's still not...
  10. A

    Is python useful for telecom technician ?

    Hello, I'd like to know if python programming skills could be an asset for a telecommunication technician/engineer. Does anybody have some experience with python into the field ? I'm currently studying telecommunication electronics in a College in Montréal, Canada and i hold a diploma in...
  11. Carlosonline

    Li-Ion Battery Managment IC Issue

    Hi, I would appreciate if someone would be able to comment/advice on the following matter. I have been looking around for an IC that would charge and balance Li-Ion cells 2-3 of them in series. It seems that the balance feature is absent in most cases. MCP73841 appears to provide most of the...
  12. L

    pic12f683 push button problem

    Hi i just joined to try and get a little help after getting no further with my project all day. my project is one push button and one LED. my goal was to get the push button to swap from 1 mode to another and then off (reset to 0) i am new to all this so i got bits of code from here and there...
  13. A

    Microchips package surface partially melted. Do you recognize the model? It is a temperature/humidity sensor.

    Hello everyone, I'm trying to find out the model of the two chips on a temperature/humidity sensor. As you can see the surface of the chips have partially melted. I think I found the model of one of them (the long-one with 14 pin): ICM7556. I found this link to a datasheet But I can't find...