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Hi,
I have been using the PIC32 processor, it comes on ready-made single board computers such as the Maximite.. which cost not much at all.
My experience with the PIC32 has been good, hope this doesn't sound too much like an ad for pic32.
Using C programming language and the libraries and examples, it works, and it is fast, more like using a full computer than a micro.
MPLAB (free development software) and the PICKit3 programmer/debugger.
What can it give a metal detector ?
I am using it to control pulses.
(in code I have a loop that switches on and off a pin instead of using a PWM, but because this processor is so FAST we can control the pulse to within a microsecond and it is completely stable, no jitter etc.
Measure analog signals: pic32 has about a dozen 10 bit analog inputs I think, I don't need that many
Process signals: do averages, some complicated FIR digital filtering or some such, no worries, heaps of ram and power.
USB interface: the pic32 has USB interface built in, so I am talking to my detector with USB, and looking at the signals on the PC
The pic32 can run at 80MHz, but I set it down to 20MHz to save power. (130mA down to 60mA)
The pins are sensitive to anything above 3V, so when interfacing, diodes and resistors must be used.
All in all, this thing is powerful and I have found it easy to debug and use, I recommend getting a handle on it if you want a micro.
My project (detector) now uses the PIC32.
It has a USB interface,
It measures 4 different sample delays 500 times a second, does some averaging, and various other calculations, adjusts the Sound frequency, and volume.
And spits out data on a USB port.
All done on the PIC32
The external components are just mosfets and power supply, and stuff associated with that.
(It gets 15 inches (40cm) on Aus 50c piece, is that good ?)
Tec
I have been using the PIC32 processor, it comes on ready-made single board computers such as the Maximite.. which cost not much at all.
My experience with the PIC32 has been good, hope this doesn't sound too much like an ad for pic32.
Using C programming language and the libraries and examples, it works, and it is fast, more like using a full computer than a micro.
MPLAB (free development software) and the PICKit3 programmer/debugger.
What can it give a metal detector ?
I am using it to control pulses.
(in code I have a loop that switches on and off a pin instead of using a PWM, but because this processor is so FAST we can control the pulse to within a microsecond and it is completely stable, no jitter etc.
Measure analog signals: pic32 has about a dozen 10 bit analog inputs I think, I don't need that many
Process signals: do averages, some complicated FIR digital filtering or some such, no worries, heaps of ram and power.
USB interface: the pic32 has USB interface built in, so I am talking to my detector with USB, and looking at the signals on the PC
The pic32 can run at 80MHz, but I set it down to 20MHz to save power. (130mA down to 60mA)
The pins are sensitive to anything above 3V, so when interfacing, diodes and resistors must be used.
All in all, this thing is powerful and I have found it easy to debug and use, I recommend getting a handle on it if you want a micro.
My project (detector) now uses the PIC32.
It has a USB interface,
It measures 4 different sample delays 500 times a second, does some averaging, and various other calculations, adjusts the Sound frequency, and volume.
And spits out data on a USB port.
All done on the PIC32
The external components are just mosfets and power supply, and stuff associated with that.
(It gets 15 inches (40cm) on Aus 50c piece, is that good ?)
Tec
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