Dangerous Prototypes Open Source Hardware

Bus Blaster v4.1a BOM

October 10, 2012, 06:42:34 pm

Is there a bom for the bus blaster v4.1a. I checked the svn but only found v1 parts list.

Re: Bus Pirate v4 hardware

Reply #1 – October 11, 2012, 05:22:39 pm

[quote author="systemstech"]Is there a bom for the bus blaster v4.1a. I checked the svn but only found v1 parts list.[/quote]
Is this good enough? It is under Project (our wiki) -> Dangerous Prototypes Projects In Development -> Bus Blaster v4

Re: Re: Bus Pirate v4 hardware

Reply #2 – October 11, 2012, 06:02:28 pm

Thanks tayken;
I don't know how I missed it. Oh well. Excellent.

Re: Bus Blaster v4.1a BOM

Reply #3 – October 11, 2012, 06:50:54 pm

[quote author="systemstech"]Thanks tayken;
I don't know how I missed it. Oh well. Excellent.[/quote]
No problem, glad to help! :)

Note: Topic split to a relevant forum section.

Re: Bus Blaster v4.1a BOM

Reply #4 – October 12, 2012, 10:39:49 pm

Here's a Digikey bom for the Bus Blaster v4.1a partially finished needs the caps, leds, and some resistors. Can someone pls double check this bom just in case.

systems

Re: Bus Blaster v4.1a BOM

Reply #5 – October 13, 2012, 10:10:08 am

Looks ok at a glance. Main thing is to  get the right chips, crystal, and vreg, everything else is fairly unimportant.

Re: Bus Blaster v4.1a BOM

Reply #6 – October 13, 2012, 07:08:55 pm

Thanks for checking things out. Ordered the bom last night, Hope to put this thing together next week.

Re: Bus Blaster v4.1a BOM

Reply #7 – October 13, 2012, 11:13:49 pm

@ian What is the speed requirement for the 4066 chips ? I used SN74AHC4066D from TI in my build, which works so far, but I'd like to be sure it won't have glitches at high speed.

Re: Bus Blaster v4.1a BOM

Reply #8 – October 14, 2012, 11:07:31 am

It's a great question and one I don't have a good answer for off the top of my head. I did look into it and was satisfied, but didn't keep enough documentation. The 4066 passes analog signals, the datasheet doesn't give a max frequency or graph for example. There are issues of cross talk and propagation delays among channels at high frequencies. I would love to hear what everyone else thinks.

Re: Bus Blaster v4.1a BOM

Reply #9 – October 19, 2012, 04:45:30 am

Hi there,

I was also thinking that an AHC4066 or something similar might be needed for correct JTAG or high speed operation, but that the other one would do for bog-standard serial.
I'm just SO glad that somebody has made a 2232 + programmable logic board where you can use BOTH channels of the 2232!
That saves me integrating separate 2232 and CPLD modules in something I want to build.

Len.