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  1. C

    Laser Beam

    Waveshare Laser Receiver Module Laser Sensor Module Transmitter Module First it says: Receiver Module then Transmitter Module ??
  2. C

    what's the part number of the chip?

    You could use a PIC chip and create the output yourself.
  3. C

    Laser Beam

    You just need an LDR and a PIC chip.
  4. C

    need a fuse resistor

    If you damaged the resistor, it is a completely different story. You can fit the other resistor as it has never blown. Just put in any 82R as a start.
  5. C

    need a fuse resistor

    "I managed to source an 82 r .75w 5% fusible" You have no idea what you are doing. 82 r .75w 5% fusible will never blow. See my discussion on talkingelectronics.com website.
  6. C

    resistor symbols

    It could mean a safety resistor or a thermal resistor
  7. C

    circuit

    A triac is the wrong item for a speed controller.
  8. C

    PIC16f877A Blinking an LED

    At the beginning of the program you create a list of equates. Start with file(register) 20h call it del1 for delay 1 in your delay routine 21h is del2 now the set of equates becomes: del1 equ 20h del2 equ 21h portA equ 5h instead of movlw 00h movwf...
  9. C

    Will this TinyCircuit dual motor driver circuit be able to work with these 2 solenoids and 2 motors?

    You are much better-off to use a 2gram linear actuator that consumes 30mA @ 3v and is fully reliable. http://www.ebay.com/itm/1pcs-1-5g-servo-micro-digital-servo-loading-two-linear-servo-Goteck-high-quality-/252021269246?hash=item3aada362fe:g:i4YAAOSwu4BVnclM
  10. C

    Electronic Ignorance!

    Yes, they could get a batch of badly-made capacitors (electrolytics) and they would be VERY ANNOYED. The same with car manufacturers that get a bad batch of seat-belts or air bags and it damages their whole reputation.
  11. C

    BOSCH reputable car battery manufacturer? then where are datasheets?

    Don't you understand? Car batteries are designed to produce a high current for starting. The size of the plates are increased and the number of plates increased until the desired CURRENT is obtained. The actual amp-hour capacity is a by-product of this endeavor and is quite often not even...
  12. C

    Serious lead-acid battery charger

    "smart charger for lead-acid batteries" needs a smart design-engineer with 4 years experience.
  13. C

    DC-Micromotors directions CW/CCW

    You have to set up all your requirements before you start, not just the vague requirements you have listed so far. Maybe it would be better to use a servo.
  14. C

    DC-Micromotors directions CW/CCW

    "If i wanted to use button 1 to turn the motor but can i also use the same button to pause the motor(stop) and then press the same button 1 again and the motor keeps traveling in the same direction till the end stop? is this possible?" You just need a microcontroller and 12 months of...
  15. C

    Low Cost PCB Manufacturers

    For $15.00 plus $10.00 postage, you would not waste time etching your own board. You can't add an overlay, solder-mask and tinned lands yourself. And yet I see magazines with articles showing home-made boards with black names and numbers scribbled all over the board. This is an absolute...
  16. C

    Are tantalum caps sometimes used as a circuit protector ?

    Look, it is very rare to go short-circuit. If you work out the thousands of TV's and the few hundred that we serviced, the reliability is enormous. But it is the ONLY cap that went short-circuit. The others dried-out.
  17. C

    Capacitor Question

    Although a capacitor just does one thing, it can help in hundreds of different ways, just like explained above. A capacitor is just like money. It just does ONE THING.
  18. C

    Old style Sydney electronics stores. Any still existing, or know of their history etc?

    Look on Talkingelecronics website under Videos and you will see videos from Karl. And look on Dave L Jones website Videos - by Dave L Jones Video - latest Videos http://www.talkingelectronics.com/projects/Videos/Videos.html http://www.talkingelectronics.com/FrameworkPages/Videos.html
  19. C

    Are tantalum caps sometimes used as a circuit protector ?

    Tantalums are nasty things. They were the only cap that went short-circuit in TV's and gave us a lot of income. They "short" for no reason.
  20. C

    BOSCH reputable car battery manufacturer? then where are datasheets?

    "I know that, but amp hour hating is still specified by 20how discharge test. It's important where how the curve looks to see the health of battery. " What are you talking about? BOSCH don't make any batteries. They are all made by Chinese or Indian workers, just like all the other heap...
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