DIY PICkit2
— February 25, 2013
PICkit 2 was originally built by Microchip as open design programmer with the schematic, source code and firmware available to boost the popularity of the PIC devices. Because of that it is easy to build a clone version of the original device. Most of the clones will produce unregulated 5 volt VPP where the original Microchip PICkit 2 provides adjustable VPP output to allow 3.3 and 2.5 volt parts programming. The schematic I have used is based on the original PICkit 2 without programmer-to-go functionality. That functionality allowing a hex file to be downloaded to the PICkit 2 to later program PIC microcontrollers without a PC with a simple pressing programmer’s push button. I do not think that functionality is required for a hobbyist but allows simplify the schematic by omitting two 24C512 EEPROM chips. The Eagle Files designed using only thru-hole mounting parts.
For more details on DIY PICkit2 Programmer for PIC Microcontrollers [Link]
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5 Comments
Sir,
Great job done. My self hobbyist and want to build PIC kit 2 programmer, but the circuit available in net mostly not clear enough either by schematic or some time they used some MOSFET not easily avilable.
Can you provide details of your hardware and firmware so that it can be built.
Thaks in advance
Regards,
Uttam Dutta
Sir,
Sorry I got the circuit after browsing your site
now I have 2 question
Did you check this programmer with all PIC families
I am not getting BAT85, can you suggest its equivalent diode.
Thanks in advance.
Please reply
Hi,
I have not tested it with all PICs, Since its a PICKit2 Clone it should do the Job as Original PIC Kit2.
Regarding BAT85 Substitute…
(nearly all the BAT family)
Bat41
Bat42
Bat43
Bat46
Bat47
Bat54
Bat86
1n5818
1n5819
Update us if you make this Clone yourself and What all PIC you test with it.
Thanks
Very good job.
Maybe you can help me to better understand some issues.
I have seen in many sites that a bootloader has to be programmed into the PIC18F2550 and then the PICKIT2 will programme/update the PIC with the firmware. The bootloader is not mentioned in your project.
Does the PK2V232000.HEX file contains the bootloader together with the firmware?
I have built a version of the PicKit2 lite and programmed the PIC18F2550 with that file (only). Windows does not recognize the USB device (unknown USB deviced detected) but when I press the button on the PicKit2 the red lights blinks (which i assume is a function of the bootloader).
Do I need to install a USB driver for windows?
thanks
Instead of 2N7000 can I use BS170?