Upcoming Chinese Holidays

Dear all people, Happy new year 2014! We will have new traditional Chinese holidays here from 25th January till 7th February soon, during this time, we will not able to ship any orders and can only slowly answer your questions. Please concern this and schedule your order to avoid this time. This maybe the only and longest holidays we

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Impedance Caculator – CIT25

If you are designing high speed high frequency board, or RF design like antenna, the impedance will a important issue the design. For the antenna design, we have a few wireless boards including RF24L01, CC1101, etc all have the on board PCB antenna. Also in the circuit design, trace width, trace isolation will also influence

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New Product 10/23

News: Recently the Hongkong post international shipment is on a big delay, which takes extra 10-20 days to arrive. So we are using Swiss post, Singapore post and some other shipping service to handle this, but it still certain on many parcels. Please try to use our optimized shipping solutions recently to get your parcel

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ACS712 Current Sensor Read

The ACS712 sensor read the current value and convert it into a relevant voltage value, The value that links the two measurements is sensitivity (you can find it on the datasheet) which – for 5A model – has a typical value of 185mV/A. The sensor can measure positive and negative currents (range -5A…5A), and power supply is 5V for the sensor,

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