October 28th, 2014 § § permalink
原理: 使用传统的TL494电源芯片，驱动IRFP250场效应管半桥，推动高压包产生高压电弧放电。输入到驱动电路音频信号通过控制RL494输出波形的死去时间来控制电弧的粗细。由于其变化频率很高，虽然肉眼观察不到电弧的瞬间粗细变化，但是由于其粗细变化足以影响到周围的空气并使之振动，并产生与输入信号相同的声波. 虽然看似简单，但是没有电子知识还是不那么容易的哦。
Time: 13:00 – 15:00 Sunday, Nov. 9th.
Fee: 300rmb; 250rmb for xinchejian members. Price includes all materials needed.
Are you tired of those old black speakers that only just make sounds? Maybe sound reactive lights are just not enough to impress you? How about a Plasma Speaker?
A plasma speaker is a device that generates an high voltage electrical arc that makes purple light and music! Without any speakers or any moving parts! Sounds too good to be true? Well, you’re wrong, the high voltage arc really does ‘sing’ by vibrating in the air. (Of course, you will need to give the device musical audio for it to work.)
*** Do NOT even attempt to build one if you have heart problems or weak heart or wearing a pacemaker, because one little shock from this thing can put you out.
September 3rd, 2014 § § permalink
Friday, September 19, 2014 18:30 – 21:00 PM to Sunday, September 21, 2014
XinCheJian will host a Crossover Hackathon!
Thanks to a proliferation of inexpensive SBCs (Single Board Computers), such as Arduino and Raspberry Pi, and an amazing array of easy-to-use sensors and actuators, the lines between programming and hardware are blurring fast. Even if you know nothing at all about hardware, you can get started in minutes and make a leap from the virtual to the physical. Along the way, you can help demonstrate why XinCheJian persists today: the vision that things can work together with open source and skills sharing. Join us to make simple hardware easy and complicated hardware possible, even if you are not an engineer.
The hack-a-thon will kick off on September 19th from 18:30 – 21:00pm at XinCheJian and run from 9am on September 20th – 17:00pm on September 21st. The finalists in each theme will pitch their concept at kickoff. The winners are eligible to receive valuable prizes.
Hackathon Event Dates and Details
• September 20th, 2014 – concept development and hacking
• September 21, 2014- Hacking and Finalist presentations, judging and awards ceremony from 5:00pm – 7:00pm.
• Teams will be offered some pre-selected hardware and components.
• Finalist presentations to the panel are limited to 15 minutes.
Rules and Guidelines:
• Max 5 people on each team
• All IP belongs to team or individual
• Create a quality powerpoint presentation and/or product demo
• Participants will have 10 minutes to present and a 5 minute Q&A
Judging Criteria: Scored 1-5 and weighed
• Access to experts for product, idea validation, finalization of product, and presentation advice.
• Winner of each theme will receive valuable prizes and chance to represent XinCheJian at Makers Carnival.
** Registration Deadline: 5pm on September 13th, 2014.
May 10th, 2014 § § permalink
So for those that might remember or have met theNelson, he dropped out of berkley by taking the thiel fellowship thielfellowship.org (resize the browser to see him on the right side) and has now released his first product of that, think social, think sharing, think music.. it’s all that in one! http://campaign.wearhaus.com/ – If you are a member of XinCheJian contact email@example.com for a discount code! theNelson is a special case, he joined XinCheJian in the early days on An Hua lu space, many many hours were given, he ran Designing your own PCB workshops which got a lot of people started almost 3 years ago, designed the first robo-racing shield that most still use and hack for other purposes and drops by as much as he can, he’s back mid may for a drop in to update us on how his new venture is going, oh, and i (Paul) still don’t think he’s 21! This is one small step for him in his future, we expect many many more! Here’s a few links and a funny photo i dug up: