Sonsivri

Hi All,

Kindly suggest a low cost microcontroller development board for remote controlling of a power supply.
The development board should have:
1.  Ethernet and USB connectivity for remote control
2.  4 Channels of Analog Input with 12bit resolution
3.  2 Channels of Analog Output with 12bit resolution
4.  10 Digital I/O's
5.  PIC or 8051 based boards are preferable.


Thanks and Regards
Itp

check for any pinguino board for pic, maybe this will be interesting for your budget (in olimex page)

There aren't many PICs with 12 bits ADCs and 12+ bit DACs, this may be a problem. Do you mind to use a dsPIC or a PIC24?

What about using some Arm Cortex-M board?

Do you definitely need that much resolution in your analogue input and output?  You will almost certainly need an external DAC to get this close with a small microcontroller.

How about something like the Analog ADuC range (http://www.analog.com/en/processors-dsp/analog-microcontrollers/aduc7019/products/product.html?doc=ADuC7019.pdf) (datasheet (http://www.analog.com/static/imported-files/data_sheets/ADuC7019_20_21_22_24_25_26_27_28_29.pdf))?  These are designed as precision ADC and DAC devices with a uC core.

What power supply are you trying to remote control?

Hello Itp,

the Silabs C8051F020 has a 12 bit ADC with 8 inputs and 2 12 bit DAC's
and lots of 5 V-tolerant IO's.
JTAG for debugging is also available.
XRAM for data can be extern extended up to 64 kbyte.

It is based on the (One-Cycle-)8051 core and can run at 25 MHz.

But no USB and no Ethernet.

Evalboards and JTAG-Adapters are available at ebay.


Best Regards

Hi,
Any ADuC or dsPIC development board with Ethernet port and TCP/IP stack available.

What is your opinion of using the low cost single board computers Raspberry PI and BeagleBone Black in such application?  I don't have any experience on Linux environment.
Thanks and regards
Itp

As far as I can see the only requirements that the RPi meets are ethernet and probably the the 2 output channels.

The USB interface is capable of device mode operation but sits behind a hub so it isn't easily accessible.
It doesn't have any analogue inputs.
It only has 8 digital IO pins.

Add to that a lack of Linux experience and it doesn't seem like a terrific fit your your requirements.

I'm not as familiar with the Beaglebone so maybe that has a few more peripherals and would be a better option but personally I would tend towards a larger uC.

No PIC with 12 bit ADC & DAC, but recently microchip announce their new PIC24 GC series which is very interesting - 16 bit sigma delta ADC + 12 bit 10 MSPS Pipeline ADC + 10 bit 1 MSPS DAC + USB Device/Host/OTG.

Have a look, i ordered some recently including the Dev. Kit (not fit with the requirement as it has no ethernet).

-ichan

Hi Itp, Silabs C8051F340 is same of C8051F020 and add USB module, the development kit round as 35$.
This is a very good choose.

Regards Centiane.

Hi,

in the last few days i got my hands on the STM32F107VC.
This beast has it all.

- 12 bit A/D
- 12 bit D/A
- USB Client/Host/OTG
- Ethernet MAC (but without PHY)
- SPI/I2C/CAN/UART/USART/TIMER
- GPIO's

With the 'de'-evaled Version of the CMX MicroNet Library i was able to get up a
small NTP Server in some hours.

Buts its a beast. It will bite You :-)


Best Regards

have you looked at the mikroe site? they have boards for PIC and 8051, can be extended with small cards to use any functionality.

i use the easypic 6 and 7 and am very happy with it.

MikroElektronika Boards http://www.mikroe.com/
have had the rounds from me to i use :
easy avr5 ,easy avr5a , bigavr, easy pic, with my son as learning tools.
they are reliable and have had some stick..also the small board add-ons are useful to.
i have had boards & add-ons from  http://www.futurlec.com/index.shtml
these are better priced and also reliable..

I'm looking for a TCP/IP stack for 8051 so I wonder if the one you used are specific for STM32? If not is this 'de'-evaled version available somewhere?