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 Post subject: Re: PICPgm USB Programmer
PostPosted: Wed Jan 04, 2017 4:29 pm 
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Joined: Tue Dec 20, 2016 11:16 am
Posts: 4
Hi Christian

Thanks for schematic i will try in today and one more thing i am working on 2 devices in parallel one is dsPIC30F4013 and PIC16F887 can i use the same hardware http://picpgm.picprojects.net/hardware/picpgm_usb_v1.0.pdf because as per the data sheet there is no Low voltage programming for dspic30F4013 should i have to drive the MCLR pin to a minimum of 9V pls let me know if so which schematic should i have to use


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 Post subject: Re: PICPgm USB Programmer
PostPosted: Thu Jan 05, 2017 6:37 am 
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Joined: Tue Dec 20, 2016 11:16 am
Posts: 4
i have given the screen shot of what i am getting for PIC16F887 i have connected the PGM PIN with a pull down resistor of 1k

the below is the image i am attaching pls let me know what might be the problem


Attachments:
pgm.jpg
pgm.jpg [ 63.64 KiB | Viewed 748 times ]
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 Post subject: Re: PICPgm USB Programmer
PostPosted: Sun Dec 10, 2017 5:22 pm 
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Joined: Sun Dec 10, 2017 4:58 pm
Posts: 1
Hello,
This may be slightly off-topic, but as it relates to the PICPgm USB Programmer, so I might as well ask it here.

1) I am planning to build the PICPgm USB Programmer with the FT245BL chip per the design. But could I substitute an ACT Inverter like 74ACT240 for the 74LS14? Just wondering why a Schmitt Trigger? No problem should we need it.

2) Christian, I think you mentioned that the USB Programmer is slow on read (due to the nature of USB ). I was wondering just how slow? I plan to use PIC16F628A (4K Flash) and similar chips, so a rough estimate would be appreciated. I am not doing production programming--just hobby.

My plans are to use this on Puppy Linux (Slacko 6.3.2). The PICPgm USB Programmer will make for a good transition to USB programming on Linux, after years of using IC-Prog with JDM.

Thanks, WN2A


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