220v ac to 12v dc power supply

Can you add 474j 50v and 474j 50v capacitors to become 100v? Or is there any alternative for 474j 250v?? Courtesy to the youtuber

Asked by Starkn 6 hours ago

Adding more servo on SSC 32u

Hi there I want to build a humanoid. But the bot will need more than 50 servos. I have two lynxmotion SSC 32u. How can I operate those two board in one commad bar???? Plz help me.!!! Chamok C.

Posted by ChamokC 11 hours ago

Arduino game controller

I wanted to make a general purpose VR gamepad using Arduino and I thought that if I made a Bluetooth mouse using an HID module then I could get it to press a specific coordinate when a button was pressed. I run into the problem, though, of multiple button presses. The best solution I could come up with was to have it quickly switch between the coordinates but then I can't have it hold down the buttons. How do commercial Bluetooth gamepads work and how could I replicate this using Arduino?

Asked by slaveboy2000 17 hours ago

Please need help with diy led grow light.

Hello people, i have never made led light before. i bought 3w led chips from ebay. 3 colors. red, deep red and royal blue. also bought led drivers 100w. i wired led-s by google)) and twhen connected this driver they dont turn on . i tried 1 led and of course it burned on this driver but when trying more leds it doesnt light up at all. what is the problem? can anybody help me? thank you

Asked by GiorgiM15 21 hours ago

2 months delay in discussion notifications

My "Discussions" tab showed no changes for about two months, and then yesterday it dumped about two months of replies that people had made on my various comments I made on the forums here. I think that qualifies as a bug. I mean, ideally my "Discussions" tab would notifiy me of replies in a matter of hours, so I could reply to those replies in a timely fashion, if it was the sort of thing where someone was expecting a reply from me.I am guessing this problem was maybe related to the recent big "improvements" to the site, to make it more readable for mobile lusers, and other changes to make the site more comment-able, question-able, tip-able, by everyone.Just wondering: Has anyone else experienced this same problem, i.e. a several weeks, or months, delay in notifications of replies to your comments?

Posted by Jack A Lopez 21 hours ago

Optical fibre cable DAC chip??

Hey everyone,I'm trying to take an audio signal from an optical fibre cable pass it through a DAC0800LCN IC, 8BIT DAC chip and input into the Arduino. I'm trying to use a 3 pin fiber optica toslink transmitter to connect the fibre optical cable to the DAC chip. Does anyone know how to set this up or even if this would work? If anyone could answer this is would be much appreciated.

Asked by MCsugar43 22 hours ago