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Recent content by Alvin81

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    Help me with Addlink 112 RF transceivers from RFsolutions

    RF Transceivers Hi. I'm not sure anyone here have used transceivers called Addlink112 from RFsolutions (www.rfsolutions.co.uk). I'm kinda having trouble sending multiple data from 2 transceivers to 1 transceiver. The problem is only 1 transceiver's data is received on the other end. If I were...
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    Heart Beat Monitor with Infra-red AND LDR Sensor

    opto interrupters circuits for heart rate sensor Hey Fragrance, I've tried using the BPW34 photo diode as compared to the heart beat schematic's LDR. Im not sure whether the BPW34 is sensitve enough but the circuit is not running at all. Do I have to modify anything else? The LED Im using is...
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    Heart Beat Monitor with Infra-red AND LDR Sensor

    photodiode frontend Hi Fragrance, I've tried using the circuit diagram b4 this....I've even sampled the output of the circuit using PIC's input capture and displaying it graphically on the PC using VB. However, I've noticed each time the sensor is used, it gives out different reading of the...
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    Help me interface a keypad to an expanded mode hc11

    Hey Zelec, Elaborate on the problems yr having...might be easy to solve

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