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Type: Posts; User: sakibnaz

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  1. Closed: Regarding Certification Process (FCC, CE and other)

    Hi all.

    I am working on a commercial product development which consist of ARM CPU and several wireless (WiFi+BLE, GPS, RF). Can anyone suggest, to bring this product into international market what...
  2. Closed: Re: Regarding Logic Level Sifter Using Voltage Compactor (HIGH 3V and LOW 2V)

    Hi KlausST. The Flash Mode I am using is Canon 430EX ii. Hot-Shoe pins are standard for all Canon models.

    Thanks.
  3. Closed: Re: Regarding Logic Level Sifter Using Voltage Compactor (HIGH 3V and LOW 2V)

    Hello.

    I made my circuit using CD4053 and now I cam generate the pulse of 3V HIGH and 2V LOW.

    But one issue I am facing ... when I am connecting this line (SPI CLK SIgnal) to my Flash Light...
  4. Closed: Re: Regarding Logic Level Sifter Using Voltage Compactor (HIGH 3V and LOW 2V)

    Thanks again for reply KlausST.

    I found this CD4053 available here. I can use it as well ... right?

    http://www.sycelectronica.com.ar/semiconductores/CD4051-52-53.pdf

    A --- MCU IO
    ax --- 2V...
  5. Closed: Re: Regarding Logic Level Sifter Using Voltage Compactor (HIGH 3V and LOW 2V)

    Hi KlausST. Thanks a lot. The solution looks great.

    But unfortunately, I think here at my location this 74HC4053 or 74HCT4053 not available. However, I'll order it from China but will take some...
  6. Closed: Re: Regarding Logic Level Sifter Using Voltage Compactor (HIGH 3V and LOW 2V)

    Hello.

    Actually there is no Datasheet. The device is a Camera Flash Light where I like to control it by MCU though Flash Light's Hot-Shoe Interface.

    I measured the signals of Camera and Flash...
  7. Closed: Re: Regarding Logic Level Sifter Using Voltage Compactor (HIGH 3V and LOW 2V)

    Hi, Thanks.

    So far I did this to convert the 2V LOW and 3V HIGH Pulse to a 0V Low and 5V High Pulse. And its working OK using LM339.

    154597

    But I need to do the reverse direction as well ......
  8. Closed: Regarding Logic Level Sifter Using Voltage Compactor (HIGH 3V and LOW 2V)

    Hi All.

    I need to connect my MCU with an external SPI device which have Logic levels of HIGH 3V and LOW 2V. From the Device to MCU Logic shift I can convert the Voltage 3V/2V to 5V/0V respectively...
  9. Closed: Re: Li-Po Single Cell Charger - USB-C Power Delivery

    Hi BradtheRad. Thanks for reply. Yes, I agree, need protection circuit. better to use dedicated USB-C Controller.

    But do I need to use a PD Controller Chip? Or only CC Controller will be Ok for my...
  10. Closed: Li-Po Single Cell Charger - USB-C Power Delivery

    Hi All.

    I am doing a project which is a Li-Po (Single Cell, 6000mA) Powered ARM CPU based device. It have USB-C receptacle and SD Card. The CPU have USB 2.0 and USB 3.0 both in OTG. This device...
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    [SOLVED]Closed: Regarding MIPI LCD Connection Suggestion

    Hello All.

    I am doing a project where I need to interface a small 1.54" LCD (with MIPI Interface) with a CPU SoM Board. I am very new in MIPI interfacing.

    FYI, below is the pin detail of the...
  12. Closed: Regarding Ultra Low Latency RF Transceiver Module for Wireless Flash Trigger

    Hello all.

    I am developing a Camera Controller with Wireless Flash trigger. There will be a Master Device (Connected with DSLR Camera Hot-Shoe) and other several (up-to 16) Salve Device (Connected...
  13. Closed: Regarding TFT LCD Interface Type RGB or SPI

    Hi All.

    We are doing a project where we need to use a 3.5" TFT (Capacitive Touchscreen. This will be used with DSLR Camera product where we need to show the Camera Live View as well as Picture to...
  14. Closed: Regarding Embedded Linux Quad-Core Board Custom Design

    Hello All.

    For my project I need to use small size Embedded Linux Quad-Core Board . My Project needs below:

    - Quad Core CPU (Run Linux Ubuntu)
    - RAM 1GB or higher
    - eMMC 64GB to 256GB and...
  15. Closed: Regarding USB Type-C Dual Role Port (DRP)

    Hi All.

    My project have 2 x USB-C DRP (Dual Role Ports). Here the target is to charge 5V Load from a 5V Power Source all via USB-C.

    I have a 8-bit MCU in design and need the Ports in DRP. I...
  16. Closed: Regarding Current Monitor Circuit for Charging Status

    Hi All.

    My project is a Load Charging Device. Load can be a Smartphone or Tablet. In my system I want to monitor if the Load is In-Charging or Fully-Charged.

    I am thinking to do it by...
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    Closed: Li-Po Coulomb Counter Design

    Hi All.

    I need to monitor the Battery state (charge remaining) in my project. I found some Coulomb Counter IC available. But my design have Microcontroller so can anyone advice how to implement...
  18. Closed: Re: RF for Wireless Camera Flash Trigger

    Hi biff44. Thanks for reply.

    For time delay ... 60ms will be huge deviation. In a real example the Camera Shutter can be max 1/8000sec i.e. 0.125ms only. Where the Camera will be connected with RF...
  19. Closed: RF for Wireless Camera Flash Trigger

    Hi All.

    I want to make a Wireless mesh based DSLR Camera Flash Trigger. Where one Transmitter (connected with Camera Hot-Shoe) will trigger one or multiple Receiver (connected with Flash).

    Now...
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    Closed: Re: High Speed Motion Sensor

    Thanks all for reply. Yes, I am also thinking of laser sensor.

    My bullet example may not be a proper case. But in generally I wanted to detect faster motion objects. Just asking instead of PIR is...
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    Closed: High Speed Motion Sensor

    Hi. I want to detect a very high speed object via Sensor. Example a bullet shot. Sensing distance can be 30 Feet around. I know PIR Motion sensor but that will be slow for this application? Is there...
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    Closed: USB Port for Charging and Load Conenct

    Hi.

    I want to make a device that will connect to other USB device (Camera) via MicroUSB. Now I want to use the same MicroUSB port for the internal Li-Po battery charging. But I need when the load...
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    Closed: Re: Raspberry Pi Zero W - USB 3.0 Controller

    Agreed ... about back compatible.

    if I use any other MCU which have FIFO line then interface it with FTDI USB 3.0 host controller?

    What I am thinking is ... the RPI microSD Card I am using is...
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    Closed: Raspberry Pi Zero W - USB 3.0 Controller

    Hi All.

    I am using RPi Zero W for my project. My project also needs file transfer from RPi MicroSD to an external USB 3.0 HDD. I am thinking if its anyhow possible to use USB 3.0 with RPi Zero W...
  25. Closed: Re: MCU GPIO Pin as Optoisolated Input and Output

    Hi. Yes definitely. The middle block is a MCU. Its STM32 actually. I think the below picture is appropriate. Sorry for the confusion.

    145188

    Thanks.
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