Can anyone tell me what R4 (1 ohm, 5 watt) does in the linked schematic? It's a mystery to me. The circuit is an ultrasonic power supply from eBay, part of my 2015 Hackaday prize project. https://hackaday.io/project/4689-improve-the-bosch-haber-process/log/16375-reverse-engineering-a-cheap-ebay-ultrasonic-power-supply...
Helpdesk: "Hi, you've reached HelpDesk, what seems to be the problem?"User: "I can't connect, nothing loads."Helpdesk: "Ok, first of all, let's gather some information, what platform and browser are you using?"User: "Windows 8 and IE 11"Helpdesk: "Ok...
We're looking for 2015 Hackaday Prize Entries that are using parts from our Sponsors so we've created 2015 THP Parts lists for Atmel, Freescale, Microchip, and Texas Instruments. Get on the list to ensure you're considered in our 3-week contest...
Liveboot is still useful, small utilities can liveboot and run wonderfully as a system to learn on, sandbox small projects on, or even to install from or repair systems with. We've even got some hacks for persistence, where your settings stay the...
We're looking for 2015 Hackaday Prize Entries that move. We'll be awarding 15 Crazyflie Nano 2.0 quadcopters to the most interesting and well documented entries. If your project moves, enter it now. Here's how:1. Enter your project! http://hackaday.io/had20152. Leave...
We're looking for 2015 Hackaday Prize Entries that move. We'll be awarding 30 gift codes for $100 in laser cutting time from Ponoko to the most interesting and well documented entries. Be proud of how you've designed your project to interact with...
Graphic adventure games. This has always been my favorite genre. I am talking the classic point-and-click 2D games of Sierra and LucasArts all the way up to the more modern and beautiful graphic adventure games put out by so many independent houses.I've...
I will be using sensor MiCS-6814 for measuring concentration of gases. So how to interface with microcontroller and how is the working of sensor.I have downloaded the datasheet but i have few queries like,1. I got the circuit of interfacing from...
Eligible projects have a Microchip part on them- an opAmp, a PIC, whatever, and must be a new entry into the Hackaday Prize after 7/22/15.More details here.https://hackaday.io/page/1116-win-the-curiosity-board