author
1Instructables4,979Views72CommentsJoined June 26th, 2007

Tell us about yourself!

Complete Your Profile
  • get a smart relay and program it to do anything you want

    View Topic »
  • panic mode commented on Alipha's forum topic Torque loss in Drill2 weeks ago

    torque is proportional to motor current.current is limited by resistances in the circuit. everything has resistance, motor itself, wires, PWM speed control and your power source. this is why you cannot get 9V battery to produce 100A even when shorted.to test if your power source is the limiting factor, connect motor directly to it - without PWM. if you still get poor results, you found the problem...

    View Topic »
  • it is quite simple really.. one TPIC can drive one 7-segment display assuming the LED strips draw less than 200mA per segment. your score board has 8 digits so you would need 8x TPIC, just cascade them and shift data through.another option would be to use just two TPICs and one high side driver and do multiplexing. this however requires higher current output and complicates programming somewhat

    something like this:

    View Topic »
  • panic mode commented on NormanY3's forum topic LED Displays2 weeks ago

    there are ready voltmeter modules (3 or 4 digits). using simple potentiometer one can control displayed value.

    check figure 2 and 5:http://www.nutsvolts.com/magazine/article/using-se...

    View Topic »
  • panic mode commented on Panomosh's forum topic Handheld Monitor (HDMI / VGA)2 weeks ago

    https://www.amazon.com/Sourcingbay-YT07P-Monitor-Digital-Receiver/dp/B00L8VIHDW/ref=sr_1_4?ie=UTF8&qid=1504992129&sr=8-4&keywords=monitor+7%22+vga

    View Topic »
  • anodizing...

    silkscreen print, etching, engraving, hand painting, stickers...

    View Topic »
  • reed switches are normally open contacts that get triggered (close) in presence of magnetic field. to detect if one or more of them are triggered wire them in parallel.if they are triggered (for example monitoring doors or windows) and you want to detect if one or more loose trigger (door open), connect them all in series, ...

    View Topic »
  • How To Make A Bright LED Panel For 20$

    nice ible... thanks for sharing.btw. how can a photo cause flickering? that is a single static image frame...if you still can see flickering, your display is at fault - or more precisely its power supply or background light inverter. try different monitor and see if the problem goes away.i checked video and at there is indeed flickering at 5:56 but this is from interference of background light with camera scan rate not from LED display.I just checked datasheet and XL4016 is a "low ripple" DC/DC regulator with filtered output up to 8A (http://www.xlsemi.com/datasheet/xl4016%20datasheet... but actual ripple value is not mentioned anywhere. Btw. lower current draw means lower ripple.according to linked LED strip data, LEDs draw 5.6W per meter. So 10m strip draws 56W which at 12V ...

    see more »

    nice ible... thanks for sharing.btw. how can a photo cause flickering? that is a single static image frame...if you still can see flickering, your display is at fault - or more precisely its power supply or background light inverter. try different monitor and see if the problem goes away.i checked video and at there is indeed flickering at 5:56 but this is from interference of background light with camera scan rate not from LED display.I just checked datasheet and XL4016 is a "low ripple" DC/DC regulator with filtered output up to 8A (http://www.xlsemi.com/datasheet/xl4016%20datasheet... but actual ripple value is not mentioned anywhere. Btw. lower current draw means lower ripple.according to linked LED strip data, LEDs draw 5.6W per meter. So 10m strip draws 56W which at 12V is about 4.7Amp. if we consider this load to be resistive - that would be equivalent of 2.57 Ohm. RC time constant (with shown filter cap of 1000uF) is 2.57ms. that is short enough to cause flicker - if the period of oscillator is similar or slower. but it is not... 180kHz means that DC/DC converter period is only 5.56us (500 times faster) indicating that this is indeed very hard filtered output with low ripple. no surprises here since according to datasheet intended use for this chip is in TVs as well.

    View Instructable »
  • panic mode commented on kludge77's instructable Gummy Bear Axe1 year ago
    Gummy Bear Axe

    nice ible... thumbs up.

    View Instructable »
  • ESP8266 / nRF24L01 Breadboard Adapter

    clean and simple... good job.

    View Instructable »
  • The 74HC164 Shift Register and your Arduino

    74LS164 does not have latch. still it can be used to control multiple characters. one option is to simply use one 74LS164 for each digit. this can only work if displays are individual and not multiplexed. if they are multiplexed (which is common when they are one display unit) you need also something to select and power one digit at a time (L293x will do).

    View Instructable »