http://www.amazon.com/gp/product/B00OAOFP6G/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 I couldn't resist for only $38. It operates as a standalone phone (if you insert a SIM) capable of calling or text or syncs with your phone over bluetooth offering...
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...
We are giving away a Raspberry Pi 2 and resin.io swag for anyone that posts their resin.io project. Just tag it on hackaday with resin.io and tweet us @resin_io the link. Follow the link for more details. Happy hacking!
Sad to say I "own" both a GM product and several John Deere products...if I had only known: http://ifixit.org/blog/7152/john-deere-ownership/ What's old is new again: Fascism
Any thoughts on the matter? Great idea? Potential to make health monitoring systems cheaper and more widespread? Or just another "Internet of things trend"?
https://www.facebook.com/RYOT/videos/1050462568300707/ The third string down in the still-image, how it seems to spike, I propose the actual string is in fact vibrating sinusoidally and would appear as a sine-function if limited to the vertical-plane......
I want to create a small device (watch battery powered) that can be paired/detected with a Pi (with BT dongle) and used to identify the presence of a pet. Would anyone have a good recommendation on what BLE module I could use? Or just some guidance on...
Does anyone have any experience with paralleling 18650's salvaged from laptop batteries of different brand and/or capacities? I am planning to use salvaged cells that I have recovered from various packs to build a go-cart battery. I don't know the capacities...
Currently our motor controllers are 'bought in parts' & the motor controllers are expensive. I am wondering if anyone out there would be interested in helping us if we start a project called 'open source hub motor controllers'. The Luka EV is a complex...