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  1. D

    Digital Signage Help

    What is the part number of the processor on the board ? What is the model number of the signage unit ? Do you know how to write programs ? Regards, Dana.
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    Short term battery backup circuit

    Do you know how much power/current the Android system requires ? Regards, Dana.
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    Impact activated LEDs

    Here is a dev board with a 3 axis accelerometer on it and a project associated with the accelerometer. Regards, Dana.
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    Noise intensity sensor circuit

    You need to start with a try. First tackle the trigger point, how much noise would make the OpAmp turn on buzzer. Hint OpAmp 2 is being used as a comparator, what makes a comparator change its output V ? https://www.analog.com/media/en/training-seminars/tutorials/MT-084.pdf Regards, Dana.
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    Maintaining constant pressure inside a volume

    Not unusual these days to use dual core processors in medical equipment, to improve safety for patients. And take advantage of the SOC offerings, example of whats onboard chip, in many cases multiples of whats shown : Regards, Dana.
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    Impact activated LEDs

    Basically one would sample the accelerometer, measure / compute the acceleration, detect an abrupt change of acceleration (a hit), and set pwms to control RGB LED to convey energy and a pulse effect of some sort to indicate the hit. Even evaluation of hit for waveshape, eg. did he hit rim or...
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    IC 8 pin (unable to identify)

    Might as well change both those caps while you are at it. Kelleys_eye is stating top of cap is slightly bulging, often a sign of electrolytic cap failure. Regards, Dana.
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    Genie chip timer

    Another example how simple it is to do something like a talking voltmeter : https://www.edaboard.com/threads/gui-codeless-processor-design.397358/#post-1708529 or a simple network design : https://www.edaboard.com/threads/verizon-remote-hotspot-controller.400349/ Once you learn a block...
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    Genie chip timer

    Arduino is C/C++. There are also block languages which are fun for quick turn one off projects. An example : https://www.electro-tech-online.com/articles/pulse-sequence-generator-smart-timer.938/ Regards, Dana.
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    Genie chip timer

    Do you know how to Arduino code ? Regards, Dana.
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    Programming a microcontroller wirelessly

    It would be possible to upload apps and do programming, but a search seems to indicate you would have to write the code to do it. OS install I have my doubts because the wifi drivers, etc.. you would have to get a kernel of some sort loaded then the drivers for wifi, it looks like great deal of...
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    Help how to build a dc voltage interrupter to control power on and off time. PWN not sutable.

    I am glad we all could help you with ideas, psycho analysis, irrelevant void filling.... Be not afraid of the eye, he even helped me, looks like based on extensive analysis post # 3 was double vacuous per the logic. Regards, Dana.
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    Help how to build a dc voltage interrupter to control power on and off time. PWN not sutable.

    LM555 timer and duty cycle adjust ? Keep in mind timing accuracy poor, over T and V and C variance. https://www.electronics-tutorials.ws/waveforms/555-circuits-part-1.html Regards, Dana.
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    Help how to build a dc voltage interrupter to control power on and off time. PWN not sutable.

    Seemed to me the OP was familiar with Arduino. And I assumed coding unless he was using it as a heater. I may have misinterpreted goals but think, until OP corrects me, that there is one cyclic timing interval with a specific selectable real time parameter of the off time. So module must take...
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    Help how to build a dc voltage interrupter to control power on and off time. PWN not sutable.

    The "gobble-de-gook" was referring to vacuous comment made in post #3. MIT, and several others, is in fact WW contributor for sure. As are several in Germany, England, Japan, France,........ Regards, Dana.
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    Is it possible to use wifi router antennas as pcie wireless adapter antenna

    https://www.instructables.com/WIFI-Antenna-Hack!/ https://www.comparitech.com/internet-providers/how-to-make-your-own-wifi-extender/
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    Is it possible to use wifi router antennas as pcie wireless adapter antenna

    What does the connection look like, a pic of the end of the antenna conection ? is the connection into the PCI card female or male ?
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    Is it possible to use wifi router antennas as pcie wireless adapter antenna

    I have done that a number of times. May not be optimal but overall seems to work just fine. Regards, Dana.
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    Help how to build a dc voltage interrupter to control power on and off time. PWN not sutable.

    @OP, I was not paying attention to fact you wanted a cyclic routine of 40 on and the selected off of 10 or 20 or 30, so corrected code. This is what it would take : Regards, Dana,
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    Help how to build a dc voltage interrupter to control power on and off time. PWN not sutable.

    @kellys_eye Roughly 8M kids here in US, starting in 6 th grade (typically) programming bots with it. Not just mBlock either, now many visual programming languages. Codered, Visuino, Scratch by MIT, Snap4arduino, Flowcode........ Hey MIT, thanks for your gobble-de-gook work in this area, I...
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