DIY USB Programer?

[kentken]

Has anyone came up with a design for a USB PIC Programmer?

Kent

 

[Nigel Goodwin]

Has anyone came up with a design for a USB PIC Programmer?

There are a number of supposed 'USB' programmers, but most of them are really serial programmers with an RS232/USB converter.

The MicroChip PICKIT1 is a true USB programmer, but only supports a very limited range of small FLASH chips. You can download all the circuits and software for it from MicroChip, as well as being a commercial product it's also used as a USB design example.

 

[falleafd]

How about the MCP-USB from www.olimex.com? Nigel.

There is no converter from RS232? But I don't know its principal.

 

[Nigel Goodwin]

How about the MCP-USB from www.olimex.com? Nigel.

There is no converter from RS232? But I don't know its principal.

There's very little information on it, so it's difficult to tell, but it's looks like it uses a USB/RS232 converter chip - presumably a SM one underneath the board?.

 

[e]

How about the MCP-USB from www.olimex.com? Nigel.

There is no converter from RS232? But I don't know its principal.

There's very little information on it, so it's difficult to tell, but it's looks like it uses a USB/RS232 converter chip - presumably a SM one underneath the board?.

yea its an rs232 with the ftdi chip (SM) mounted on the bottom of the board, also uses the 5V USB line to generate the programming voltages (i think...)

 

[falleafd]

Thanks e,

I've just ordered a MCP_USB from SparkFun, and be waiting for delivery. I see the only thing from those programmer is its compatible to PicStart Plus MPLAB.

 

[e]

Thanks e,

I've just ordered a MCP_USB from SparkFun, and be waiting for delivery. I see the only thing from those programmer is its compatible to PicStart Plus MPLAB.

ohh it looks like a good programmer to me, I have the serial MCP and it works just fine fo everything I have tried. I would have rather had the USB one though :?

 

[Nigel Goodwin]

Thanks e,

I've just ordered a MCP_USB from SparkFun, and be waiting for delivery. I see the only thing from those programmer is its compatible to PicStart Plus MPLAB.

ohh it looks like a good programmer to me, I have the serial MCP and it works just fine fo everything I have tried. I would have rather had the USB one though :?

They do an addon USB converter for it!.

 

[falleafd]

Yes they make a FT232 converter on it, and use virtual COM port.

However, it's better than RS232 programmer that they don't need a pwr supply.

I took a look to PIC KIT 1 and see it no good, because a very short range of PICs.

Well, however, sometimes I see bootloader may do faster programming and easy to test results. And Tiny bootloader is verygood.