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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by ella

  1. E

    RS232 Monitoring Dongle

    Hi, I have assembled below dongle and was surprised it really works. http://www.xdimax.net/forum/viewtopic.php?f=3&t=498 I can see communication of my embedded PC with external GSM modem. How exactly it works?
  2. E

    RS232 to X10 or UPB

    You have to provide the whole project information. Each of the mentioned interfaces RS232 , X10, UPB have a number of layers from physical to application. The solution depends on the desired layer adaptation. Not all of them possible. You can not for instance take a byte from RS232 and simply...
  3. E

    Open source stuff

    There is a lot of references here: **broken link removed**
  4. E

    25GBP "Hi-precision" LC-meter - anything worth?

    Looks suspicious. Ask seller to picture the opposite site with the same resolution. -------------------------------- USB-I2C, USB-SPI, USB-GPIO, RS232, RS485, MDIO, Ir, LCD, PWM
  5. E

    Travel immmersion water heater

    It can probably work if you add to the system a FAN and heat protection element to brake the system if it get's overheated. But in a short "do not do it a t home" :o ------------------------------ USB-I2C, USB-SPI, USB-GPIO, RS232, RS485, MDIO, Ir, LCD, PWM
  6. E

    Power Supply Question.

    Read it's part number printed on the top of transformer find it's data sheet and measure inputs and outputs according to data sheet. ------------------------------- USB-I2C, USB-SPI, USB-GPIO, RS232, RS485, MDIO, Ir, LCD, PWM
  7. E

    Power Supply Question.

    Many times you can look at the electronic systems as a water pipes system. Current is a amount of water that flows through pipe profile at given time (1 second) . Power supply can be seen as a water tower and it's MAX current is an amount of water that can be taken at time. Now your device is...
  8. E

    Help with AC conversion

    Do you have a manual control over the whole system? I mean can you manually turn it on and off or control Fan speed? Maybe you should look at the same place where the manual control seats. Even if is it IR remote you can emulate button press or IR signal itself. ----------------------------...
  9. E

    low part voltage buffers for multiple microcontroller pins?

    What about 74HC541 As a replacement we've used SN74LVC07AD
  10. E

    Windows 7 compatible USB serial RS232 adapter

    I do not use FTDI at all. I do not like WIndoz USB to Serial software stack as it provides no real time. This is my favorite: SUb-20-R25 Well it is not a compatible solution and you can not use dumb HyperTerm but they supply for free a set of similar SUB-20 based tools that works very nice.
  11. E

    Mass prodution costs?

    The PCB cost depends not only on square but also a number of layers. Two layers PCB with cost you less then $1 Assembling is going per pad. BTW you should consider production test and chip programming as well. It is paid per hour. About $50. Let's say if testing your assembled PCB takes...
  12. E

    C++ Builder and USB<->RS232

    Here is the easier way: SUB-20 Multi Interface USB Adapter USB to I2C SPI GPIO RS232 RS485 Ir This board is USB to RS232 (and SPI,I2C,...) adapter. You connect it to the PC USB port and take it's RS232 output and connect it to PIC. SUB-20 software has a GUI utility to send and receive data...
  13. E

    C++ Builder and USB<->RS232

    Hi, I still do not get what is the task and what is the final goal of your project? Is it communicating with PIC from PC via RS232? In this case why should it be C++ Builder and why should you write any SoftWare at all?
  14. E

    C++ Builder and USB<->RS232

    What tutorial are you looking for? I see no problem you have to face in your setup. The PC SW will know nothing about nature of RS232 port it will use. It can be a real RS232 or Virtual one via USB adapter unless you are using real time bit banging with pins of RS232 port. If you are just...
  15. E

    SPI/I2C/UART to USB Bridge

    If you do not want to write your own firmware and software and ready to use solution with GUI or command line interface you can try this one: SUB-20 Multi Interface USB Adapter USB to I2C SPI GPIO RS232 RS485 Ir I personally use SUB-20 in many projects.

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