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    Radio control to DC conversion

    Hi I'm trying to convert the output of a radio control receiver which has variable pulses (from 1ms=0 to 2ms=1 every 20ms) to give me a variable DC voltage output that is fairly linear. I can cope with a variable PWM output if I have to but would rather have a smooth variable voltage. I...
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    PWM motor drive with emergency stop

    I need to control a 24V motor with an 18M2 high-power project board but using external FETs (SMP60N05) because of the power involved. I have got the motor running with PWM but need to be able to reverse it, hence the full bridge drive circuit. To avoid damaging either the motor or the FETs I...
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    Using 78L05 regulator on project PCBs

    I have just purchased some standard and high power project boards and because I need them to operate on 24V I followed the instructions and fitted a 78L05 regulator IC. I have used these regulators on many other projects and have always been advised to include decoupling capacitors (I usually...
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    Using a variable resistor to control PWM mark/space ratio.

    Hi I'm new to PICAXE but I would like to use one for a project to control 1, 2 or 4 high power motors (up to 20Amps each at 24V). I originally intended to use a PIC16C71 because a) I have some and b) I have the basic circuit and software, as published in PIC Cookbook Vol 1. Having "roughed...
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