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panStamp is an open source project created for the enthusiasts that love measuring and controlling things wirelessly. panStamps are small wireless boards specially designed to fit in low-power applications, simple to program and simple to work with. With panStamps, you can measure almost everything by simply connecting your panStamp to the sensors, placing a battery and sending wireless data from the first moment. panStamps are suitable for any kind of project needing remote control and low-power wireless transmissions, including home automation, energy metering, weather monitoring and robot control. If you are one of these three things: a hobbyist, a professional or an end-user, you will find that panStamps provide extreme flexibility and power when creating custom wireless networks. [ ]

This circuit allows a cheap or discarded wireless doorbell set (i.e. transmitter and receiver unit) to be used as a remote emergency stop on a high-power electrical motor or motor controller system. Circuit diagram : Wireless and Wired Emergency Stop System Circuit Diagram When the button on the wireless doorbell unit is pressed, the resulting 0 V signal from the receiver unit (‘motor E-Stop’) causes PNP  transistor T1 to be turned on. Via  transistor T2, latching relay Re1 then changes state. The same is achieved when the wired Motor E-Stop button, S1, is pressed. The reset button, S2, must be pressed to reverse the state of the latching relay. The choice of T1 and T2 is not critical they are general purpose, low voltage PNP and NPN switching  transistors  respectively,  for  which  many equivalents exist. As an EMC precaution, small capacitors (100 pF) are fitted across base resistors R1 and R2, preventing the motor  from being shut down by external  electrical noise and inter...

In this article, I will show you how to build a simple Wireless Energy Transfer Circuit. It's really simple circuit made of 5 parts, even a beginner shouldn't have any problems with building this. Wireless energy transfer circuit I also improved it since my last video, made better secondary coils that work on larger/longer distances. Things you will need: 1. Transistor BD139 Transistor BD139 Or you can use these alternatives: BD135, BD137, 2N4921, 2N4922, 2N4923, BDW55, BDW57, BDW59. (You need only one, not all of them) 2. Foil capacitor 1nF 100V Foil capacitor 1nF 100V Voltage should be more than 16V, you should use this one because of its size (it will fit on PCB as we need it) Note that: 1000 means 1000pF = 1nF tags: Wireless Energy Transfer Circuit 3. Foil capacitor 4.7nF - 100V Note: 4700 = 4700pF = 4.7nF 4. Foil capacitor 100nF - 63V Note: 0.1 means 0.1uF here; 100nF 5. Resistor 5k6 Ohm, 0.5W Resistor 5k6 Ohm, 0.5W 6. And a 5x6 holes large piece of universal PCB. 5x6 hole...

Just as in the transmitter circuit, the series of FM Wireless Microphone Receiver Hi Fi also uses an FM audio receiver module. Module used in the circuit FM Wireless Microphone Receiver Hi Fi has a good feture, namely audio FM receiver module has a function that is able to muffle the noise squel. Audio FM receiver module that is used in FM Wireless Microphone Receiver Hi Fi also does not require a lot of supporting components in the RF signal reception. Audio FM receiver module only requires a 5 volt DC voltage source and a potentiometer P2 to set the threshold level of noise that will be muffled. Voltage source to an audio FM receiver module is also to go through the regulator is good, because if the quality of resources kuran it will generate noise. At the output line installed capacitors C3 and C4 as a couple and compensator for output in accordance with the amplifier or mixer (100mV rms). Part Series FM Wireless Microphone Receiver Hi Fi To provide an output signal according to the...

This is a simple circuit that can power a light bulb without any wires, at a distance of almost 1 inch! This circuit acts as both, step up Voltage converter and also wireless electricity transmitter and receiver . This is a really easy project to do, and could be used in many ways if improved. So lets get to it! \

There are times when you want to control a LED indicator light through the side of a plastic box, without wires and without drilling a hole in the box.  One example where this may be needed is in data collection systems.  These are often used out of doors in harsh environments and have to be hermetically sealed. Holes drilled in the side of the box for panel mounted LEDs or light pipes can often leak. Wireless LED Driver Circuit Diagram : The circuit below solves this problem by sending power to the LED through the plastic, using a magnetic coupling technique. The circuit below can route power through plastic enclosures as thick as ¼ inch.  The circuit will not work through metal boxes.  An expensive inductor, driven by a series resonant mode 125KHz oscillator, forms the power transmitter.  A similar inductor, wired as a 125KHz parallel resonant circuit, forms the power receiver.  A voltage doubler circuit at the receiver efficiently converts the collected AC into DC.  The circuit wil...