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  1. Amar Dhore

    Arduino Mega2560 & GRBL .....

    I am also new the Arduino. In my experience, if you are using serial, while programming you should disconnect RX and TX pins.
  2. Amar Dhore

    help on a RF wireless LED project please

    Oh, From the above discussion, I got what the product is. Its jacket for biker which will indicate the signals/break etc etc. BLE sounds like a good idea for this project. Less interference, less power consumption but not sure about LEDs power ratings and that will decide the battery size.
  3. Amar Dhore

    help on a RF wireless LED project please

    what going to be the approximate maximum distance between transmitter and receiver?
  4. Amar Dhore

    help on a RF wireless LED project please

    Is the transmitter going to move (while driving?) or is it fixed?
  5. Amar Dhore

    Hantek 5102

    You can use a Mux.
  6. Amar Dhore

    Pushbutton circuit

    No one said it. :eek:
  7. Amar Dhore

    Pushbutton circuit

    Can you explain a bit more? How are the switches connected to MCU?
  8. Amar Dhore

    8 Bit or 32 Bit Microcontroller

    your question is like: A bus that can carry max 8 people with 32 MPH vs a bus that can carry 32 people with 8 MPH, which one is better. Even though the 32bit micros are the best in the market but still you will have to chose what is best for your application. if 8 bit is running at 32MHz and...
  9. Amar Dhore

    New guy... Equipment choices... Practice Boards.

    1. I would add few more items for soldering and these are optional but good to have: - Flux - Tweezers - Solder wick 2. "Introduction to Schematics" is a good book to start with. Its available online for free. Good luck.
  10. Amar Dhore

    Which PIC, LED PWM dimming

    http://microchip.wikidot.com/8bit:pwm This might be helpful.
  11. Amar Dhore

    Upload code from pic

    Yes, you can read it with PICKit 3 if its not protected. Give it a try. Go to the Mplab, create a test project (any random name project). Select a PIC that you want to read from. Instead of compile, click on a read option. It will ask you to save the file as hex. You can use it to program other...
  12. Amar Dhore

    Detecting Leveling of Arm and Shoulder

    I will put it on a wrist like a watch and get the orientation with respect to a ground plane. Check this out, https://learn.adafruit.com/adafruit-bno055-absolute-orientation-sensor/overview
  13. Amar Dhore

    Temperature control

    What I would do is: If the Controller has Auto tune, I would use that first and I wold check how my temperature ramp up and ramp down is. Is it too fast or too slow? Also I would check how much is Overshoot and undershoot. if Auto tune is not making my system stable, I would changes one...
  14. Amar Dhore

    ISP Download to DS89C450 using MAX3232 ?

    Yes I realized that after I posted. Rx2 / TX1 should not be a problem. 1. Check your baud rate? 2. In put and output waveform with scope as Harald mentioned. 3. How long is the TTL cable?
  15. Amar Dhore

    ISP Download to DS89C450 using MAX3232 ?

    From your above circuit and datasheet for MAX3232, you receving on RX2 and transmitting on TX1. Are grounds of RS232 driver and controller tied together?
  16. Amar Dhore

    Detecting Leveling of Arm and Shoulder

    Gyroscope sensor might do it.
  17. Amar Dhore

    Wiring a relay

    Common pins (4 & 9) , Normally Closed pair (3 & 10) to device 1, and Normally Open pair (5 & 8) to device 2. one of the common pin should be your input (Audio), Connect normally closed to a speaker. When delay circuit is active, energize the relay, so your audio input will go to the pin 5 and...
  18. Amar Dhore

    Wiring a relay

    what is a part number for a relay?
  19. Amar Dhore

    Cheapest way to get data from multiple(100s) of sensors?

    If you can get sensor/s with some sort of communication capability then it might be simple and cheap. Otherwise parallel to serial or multiplexer are good ideas but when you say 100s of sensor, Its gonna cost a bit more.
  20. Amar Dhore

    Bluetooth Camera - Help with schematic and misc.

    Interesting!!!! Most of the cameras have a USB to download pictures to the computer. So if you can get a USB to RS232/TTL converter. Then interface this RS232 to an external bluetooth module to the camera. What kind of camera you have?
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