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  1. [SOLVED]Closed: Re: Help Identify a plastic flanged/wall mount enclosure.

    I found it!

    Its is a Bud CU-1941-MB....
  2. [SOLVED]Closed: Help Identify a small plastic flanged/wall mount enclosure.

    I'm struggling to identify the manufacturer of small plastic flanged(wall mount) enclosure.

    The dimensions: ~82mm x 54mm x 30mm (3.2" x 2.1" x 1.2").
    Features: Hidden screws on flanged lid,...
  3. Replies
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    11,677

    Closed: Re: [Moved]: cleaning pcb boards with petrol

    My company uses 90% Isopropyl alcohol and acrylic lacquer thinner.
  4. Closed: Re: Understanding a Delay, for(j=0;j

    Please forgive me.
    But my line of questions seems like a logical progression of my original question discussion as it affects the cycle divisor ratio referenced in the first reply. I will create a...
  5. Closed: Re: Understanding a Delay, for(j=0;j

    So the cycle divisor ratio I have been using above formula is 12 (with STC11F16XE).

    The spec sheet of the STC11F16XE states:


    The STC89C54RD+ spec states:
  6. Closed: Re: Understanding a Delay, for(j=0;j

    So with these facts in mind, I must ask why two different 8051 compatible MCUs (STC11F16XE, STC89C54RD+) would have a wildly different reaction to these basic Delay functions.

    ie. Using a...
  7. Closed: Re: Understanding a Delay, for(j=0;j

    Yes, I transposed the crystal frequency, it is the common 11.0592 mhz.

    So the Engineer's Garage link I referenced failed to display the 1.079us (one machine cycle time) in his formula.

    So why...
  8. Closed: Understanding a Delay, for(j=0;j<1275;j++);, Crystal freq & 1275, 8051

    I see countless uses of this basic Delay, usually for milliseconds.


    void delay(int ms) //Produces a delay in msec.
    {
    int i,j;
    for(i=0;i<ms;i++)
    for(j=0;j<1275;j++);
    }
  9. Replies
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    Closed: Re: I2C program file problem with 8051

    In this code I'm trying to determine what the:

    sbit en1=P2^7;
    is referring to. An LED state, indicator? Used in place of an int value maybe?



    #include<intrins.h>
    #include<reg51.h>
    sbit...
  10. Closed: Re: countdown_timer.c(119): error C100: unprintable character 0x97 skipped

    The code I'm working on was in a project located here: https://electronicswork.wordpress.com/2012/10/11/digitalclock/

    I'm using Keil uVision4, I thought it should be reliable.
  11. Closed: Re: countdown_timer.c(119): error C100: unprintable character 0x97 skipped

    I have this same problem with unprintable character 0x96 on build, in the below code.
    So I updated the code from h-; to h--;

    Clock_Cal1.c(183): error C100: unprintable character 0x96 skipped...
  12. [SOLVED]Closed: Re: 1602 LCD Row & Col Question, 8051 LCD Demo test in C.

    Thanks Milan
  13. [SOLVED]Closed: Re: 1602 LCD Row & Col Question, 8051 LCD Demo test in C.

    I'm creating a fresh one from scratch.
  14. [SOLVED]Closed: Re: 1602 LCD Row & Col Question, 8051 LCD Demo test in C.

    My initial post displays the Demo Code I referred to (that you commented on previously). My question is also given. I'm Sure the example is not working properly.

    I'm trying to learn C, and basic...
  15. [SOLVED]Closed: Re: 1602 LCD Row & Col Question, 8051 LCD Demo test in C.

    I thought I understood the DisplayListChar function.

    I found this format (Col-X, Row-Y) in the original demo code, matching function, not working.

    DisplayListChar(4, 0, "Line 1"); // original...
  16. [SOLVED]Closed: 1602 LCD Row & Col Question, 8051 LCD Demo test in C.

    I'm trying to learn what I'm doing wrong with simple demo C code to display two lines of text on a 1602 LCD display.

    Whatever (Col, Row) I select everything stays on row 1. See section 'Display...
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    Closed: Anyone using MCU 8051 IDE??

    Could anyone using MCE 8051 IDE please help me with a really easy question??

    Why would compiling a C code project result in a "Unable to find "LEDMatrix1.cdb" message?
    And no hex or other files...
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    2,162

    Closed: Re: how to define single bit in MCU 8051 ide?

    Have you ever resolved this issue?

    Are you still using MCU8051IDE?
  19. Closed: STC MCUs, Cross-Compiler, STC-ISP programmer suggestions

    My first post mysteriously disappeared, so I will try again...

    I'm trying to setup to program STC89C54 MPUs, and have a few rookie questions.

    I'm trying to select the best cross-compiler, free...
  20. Closed: How best to hardware reset or restart a SIM300 (or SIM900)

    I'm using a manufactured MCU board with a SIM300 module, and need to do a Reset or power cycle of the SIM300.

    I need to reset the SIM300 every 10 days. For some reason the SIM300 controller board...
  21. Closed: Re: WeBee GSM/GPRS Development Board Challange. Ref SIM300 module.

    Sounds like after buying it, the buyer gets a download code, etc.? The IDE software is included on CD. I suppose a different IDE could be used for the STC 89LE52RC. (instruction and development...
  22. Closed: Re: WeBee GSM/GPRS Development Board Challange. Ref SIM300 module.

    Found it!!

    But sad news, its all in Chinese, including the software apparently.

    Here it is:
    http://item.taobao.com/item.htm?spm=a1z10.3.w1017-3470594920.11.49ahIQ&id=35026490940&

    I'm trying...
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    Closed: Re: gsm sms based security system

    Can you please post the corrected code?
  24. Closed: WeBee GSM/GPRS Development Board Challange. Ref SIM300 module.

    I'm trying to identify and locate what appears to be a WeBee GSM/GPRS development board. It has an onboard microcontroller, 16-button pad, LCD port, I/O ports, relay, and misc. other push switches. ...
  25. Closed: SIM300 module starts searching after 8-10 days, loosing registration?

    I'm working with small GSM SMS alarm controller using the SIM300 module.
    I have added a small microcontroller with RTC to one panel input, used to trigger a daily test message.

    The problem I'm...
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