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  • 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 ...

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    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.

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  • panic mode commented on kludge77's instructable Gummy Bear Axe2 years ago
    Gummy Bear Axe

    nice ible... thumbs up.

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  • ESP8266 / nRF24L01 Breadboard Adapter

    clean and simple... good job.

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  • 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).

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