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Anybody used one of those ebay LCD display serial interface boards? I just ordered a couple of these boards that are flooding ebay. Thought they'd be interesting to play with. https://www.ebay.com/itm/1X-IIC-... Anybody have... |
Fri. Aug 24, 2018 - 08:53 PM |
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Does an enabled internal pullup remain active in power-down sleep mode? Device is ATTINY_13. I don't see anything in the data sheet about this (looking in the wrong places?). I need a pullup (internal or external) on an INT pin for wakeup... |
Fri. Jan 12, 2018 - 08:09 PM |
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First time working with battery power, am I going down the right path? I have to design an unusual device, with a small AVR (not yet selected) at its heart, that runs off 3 D or C cells. When running the device will draw maybe 200 mA, but it... |
Wed. Sep 20, 2017 - 11:00 PM |
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Home automation - is X10 still the big player, or is there something else? I want to control some (currently dumb) AC outlets for outdoor lights and such, and in the past X10 would have been the solution. Is it still the main solution, or have new... |
Fri. Mar 18, 2016 - 03:15 AM |
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I need a special kind of switch Here's my problem. I need to wake up (and sleep) a battery-powered AVR by closing a switch or some other means, but I can't have any physical contact with the board or... |
Sat. Feb 27, 2016 - 10:58 PM |
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Best (easiest, cheapest) RF connection method? I'm posting this here because I didn't think it fit well into any of the wireless forums. I need to replace wired buttons with some sort of RF key fob connection. All... |
Sat. Aug 29, 2015 - 06:43 PM |
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Christmas giveaway for students and noobs - blank MEGAxx8 PCBs I found about 6 dozen of these blank PCBs in a drawer, from some past lifetime. They're pretty generic, with 12 IO brought out on headers, and a 75175 serial translator.... |
Thu. Dec 18, 2014 - 09:53 PM |
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Useful add-ons for PCB prototypes? This question is prompted by some good ideas I've seen here, and a few I've had on my own. I thought it would be useful to collect them in one place. So the question... |
Wed. Dec 10, 2014 - 02:21 AM |
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What counts as PWM? I'm writing a tutorial episode on PWM, and I've come upon a rather basic question: Does the term "pulse width modulation" apply only to signals where the pulses are regular... |
Sun. Sep 28, 2014 - 02:22 AM |
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Anybody done a Kickstarter project? I've been tempted to try a kickstarter project just for the experience. I'd do something very simple, a 17x50mm RGB LED driver board (prototype PCBs already made and working... |
Mon. Sep 8, 2014 - 08:53 PM |
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How to get a proper PCB ground pour? OK, I'm really a software guy, but I dabble in some hardware design. One of the problems I often have is how to create a fully-connected ground pour on both sides of a 2-sided... |
Mon. Aug 25, 2014 - 10:34 PM |
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External tutorial on 7-Segment Displays (uses AVR) I just finished this tutorial and thought it might be useful to some of the folks here. http://www.embeddedrelated.com/s... |
Thu. Aug 14, 2014 - 05:16 AM |