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Messages - Philip

91
Bus Pirate Support / Re: Update to V5 something went wrong..
yup the bootloader was successfully upgraded..and I was able to use the BP using V4 firmware but when i tried to upgrade to V5.10 it says the bl detection is timed out and it no longer functions..

any suggestions/?
92
Bus Pirate Support / Update to V5 something went wrong..
Hi all, I tried to update my bus pirate's firmware from 2.4 to 4.1 and it was successful but when i tried to update to 5.10 something went wrong and my bus pirate is no longer responding..
can anyone suggest the nest thing i copuld get my bus pirate running again and upgrade the firmware to 5.10.

when i tried to detect bl..it says no bl found..

i was following this post..the first update went out fine but the second went haywire..http://www.simonroses.com/bus-pirate-fi ... comment-99
93
Bus Pirate Support / Re: BusPirate for a newbie
Thanks for the schematics.. I always wanted to go to Japan..prety girls and lots of electronic components - what a combo!

hehehe..

I think im going to use IR sensors coz.. I dun wanna stop my heart (no one owns it yet nayahahaha)
94
Bus Pirate Support / Re: BusPirate for a newbie
tayken a schematic would be very much appreciated..

after I make the PCB lay out for it, maybe ian could make it a part of the BUs Pirate product line so hobbyists can check thier heart rates while working - to measure the hype hehehe
96
Bus Pirate Support / Re: BusPirate for a newbie
the tutorial used an ATTiny...is this also posible with ATmega8?

no additional hardware required?

I dont have a programmer right now so im planning to use the bus pirate..

I have two atmega8 some where in my box, and the H bridge motors that i ordered is comming, 5 L293s for $14 is good right?


about the scripting, I cant seem to make it run..something wrong when making a python program run on my win7..

heres an idea that i would like to share:

Use the bus pirate to host an ECG device..just hook up some probes to your chest then have a precision adc to convert them then read using BP's I2C or SPI.. the nuse the oscilloscope program to graph the heart beats..

What ya guys thing? ECG through USB hehe or something like an ECG pirate


Thanks for the tips
98
Bus Pirate Support / BusPirate for a newbie
Hi all!

I already used my bus pirate to communicate through UART,SPI and I2C but there things that I want to learn and Im finding it hard to find the references for these topics:

BusPirate as an AVR programmer -- tutorial?
BusPirate Binary programming i would like to automate reading from i2c

lots of you guys uses linux are there topics that could guide me in doing stuff in windows im usng winxp and 7


I hope this wouldnt be much of a bother
99
Project development, ideas, and suggestions / Re: USB POV/Accelerometer Toy
I was surprised to see the board for this one in one of ian's posts..i would like to ask what is the usb for? program downloading right? does it have its own battery ofsome kind?

about measuring speed..how about using an accelerometer perpendicular to the center of the board..
[]----------------------------------------------------------------------------o
^---this is the accelerometer                                                     ^-center of the rotarion of the board

if an accelerometer can be used to know the orientation then we can calculate for the angular speed on every point on the board..change in theta multiplied by the distance from the center..

just had that idea..but the board need to rotate about an axis.. and the accelerometer must be perpendicular to that axis..

did i make any sense?
103
Project development, ideas, and suggestions / SIM cards as memory for MCU
i have though of this early this morning, i dont really know if its feasible or even useful.

The idea is that i would like to use a SIM card (from a cellphone) as a memory element on my projects,
if the simcard has 32k of space, it would be enough to hold previous data, and the sorts, also it could be
used as a storage for settings.

Can anyone comment on this?
Is there any circuit, project or library for interfacing sim cards into an MCu?
104
USB Infrared Toy / Re: emitter follower?
hi everyone, im not really that familiar with the circuit you guys are referring to..i have a query and a suggestion though.

how about using a resistor-zener diode pair at the base side of the transistor, where the zener is connected to the ground and to the base, while the resistor is connected to the base and to the supply so there will be a constant voltage at the  emitter to ground side..that is Vz-0.7

im thinking that if i have only the IR led as the load (it has constant forward bias resistance) and if ill have the voltage regulation fixed then the IR LED would have a constant brightness..im not really sure of this though. the configuration im referring to above is actually a transistor based voltage regulator i found at my boylestad book..

i hope you guys can comment on this and help me understand more how problems like this should be approached.

i have a simple diagram attached..

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