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compact-flash/ide adapter

Started by Hul Tytus in sci.electronics.design12 years ago 6 replies

sci.electronics.design compact-flash/ide adapter A compact-flash/ide adapter (SD-CF-IDE-A) from dealextreme.com worked well but only as a...

sci.electronics.design compact-flash/ide adapter A compact-flash/ide adapter (SD-CF-IDE-A) from dealextreme.com worked well but only as a master, not as a slave, which is a distinct bother. Anyone know of an ide adapter that works either way, either from dealextreme or another dealer? Hul


Imaging by Cell Phone Project

Started by Artist in sci.electronics.design2 years ago 6 replies

The project requires two or more cell phones in a dark container. One of the phones will take a picture with its flash. The other phones will...

The project requires two or more cell phones in a dark container. One of the phones will take a picture with its flash. The other phones will take a picture without flash by holding the equivalent of their shutters open long enough, and with the right timing, to use the flashing phone for illumination. Then each phone in the container will take a turn at taking a picture with a flash, and a...


Simple circuit to flash an LED from RF

Started by amdx in sci.electronics.design2 years ago 27 replies

I'd like to setup a high Q LC to receive a local Radio station probably charging a cap, when the charge is high enough flash an LED. Maybe set...

I'd like to setup a high Q LC to receive a local Radio station probably charging a cap, when the charge is high enough flash an LED. Maybe set the trigger point of an SCR, or could just a zener do it. I don't have LT spice, so please don't post and answer with that.                                 Thanks, Mikek -- This email has been checked for viruses...


USB Flash drive repair

Started by bitrex in sci.electronics.design9 years ago 19 replies

I have a Sandisk 32G USB flash drive that someone has given me in the hope that I might be able to salvage some data off it. Looks like it...

I have a Sandisk 32G USB flash drive that someone has given me in the hope that I might be able to salvage some data off it. Looks like it was in a laptop and jammed against a wall, resulting in broken solder joints. My PC wasn't detecting it when it was plugged in at all. I cut the drive open and attempted to re-seat the pins and then reflow the solder using a heat gun on a low setti...


Using Flash RAM to replace obsolete CMOS RAM

Started by John Robertson in sci.electronics.design3 years ago 30 replies

I have a project in mind using small Flash RAM and a cheap CPU to substitute for the old TTL level CMOS RAM used on arcade games. This has...

I have a project in mind using small Flash RAM and a cheap CPU to substitute for the old TTL level CMOS RAM used on arcade games. This has come up because the NVRAM that is currently being used is getting hard to find at prices under $7 to $9USD. Something like the M25P05-AVMN6P (512k or 64K x 8) or similar chips are $0.20 in single quantities. The size of CMOS RAM we are replacing ...


Xenon flash tube SPICE model

Started by Tim Wescott in sci.electronics.design11 years ago 7 replies

Anyone have any pointers to SPICE models for Xenon flash tubes? Or at least data sheets that have the I-V characteristics described or...

Anyone have any pointers to SPICE models for Xenon flash tubes? Or at least data sheets that have the I-V characteristics described or graphed? (This is for a hobby project involving discarded photoflash units, a 19 year old kid, and various web pages on building coil guns, by the way). Thanks in advance. -- My liberal friends think I'm a conservative kook. My conservative friends...


Reliability of microcontroller silicon die glue on top of another die

Started by Anonymous in sci.electronics.design7 years ago 43 replies

Hi I have been looking into the GigaDevice GD32 Cortex M3 microcontroller It has a REALLY nice price performance ratio So I dug a little...

Hi I have been looking into the GigaDevice GD32 Cortex M3 microcontroller It has a REALLY nice price performance ratio So I dug a little deeper, and found that they do not integrate the flash and microcontroller on the same die as a normal microcontroller, but instead they use a single die variant of logic and core, and glues a serial flash on top of that Link to picture: h


Crap Flash Drives

Started by Ricky in sci.electronics.design2 years ago 23 replies

I thought I would give Amazon a try and see if the USB flash drives sold there are any better than the crap sold on eBay. Well, it seems not. I...

I thought I would give Amazon a try and see if the USB flash drives sold there are any better than the crap sold on eBay. Well, it seems not. I picked a drive in a metal case to stand up to a bit of abuse and order two in order to get the free shipping. Amazon makes it hard to get the free shipping without signing up for their master plan that's over $100 a year now. But eventua


Flash Kyle Rittenhouse found dead!

Started by Anonymous in sci.electronics.design2 years ago 1 reply

He knew too much. Is it April 1st yet...

He knew too much. Is it April 1st yet...


OT?

Started by gray_wolf in sci.electronics.design5 years ago 41 replies

I need to send 40GB of photos to several people. My upload speed is .230 MB/s. It seems to me my best bet is to mail them a flash drive. Any tips...

I need to send 40GB of photos to several people. My upload speed is .230 MB/s. It seems to me my best bet is to mail them a flash drive. Any tips on mailing them 1st class mail? Any problems mailing them to Mexico and Canada? I live in Texas. Nothing illegal just common family type images. Thanks


non-pipelined fast ADC

Started by John Larkin in sci.electronics.design4 years ago 79 replies

Does anybody know of one? I'd like to digitize 6 bits or so, really fast. Most fast ADCs take 3 or 4 clocks to process the data. Even 4 bits...

Does anybody know of one? I'd like to digitize 6 bits or so, really fast. Most fast ADCs take 3 or 4 clocks to process the data. Even 4 bits might work. Classic "flash" ADCs were fast, but needed 2^N comparators.


Auto immobilizer

Started by Anonymous in sci.electronics.design8 years ago 28 replies

Where do they connect auto immobilizer? Ignition wire is simply, but too simple and obviously easy to by-pass. For my old Ford, i disable it...

Where do they connect auto immobilizer? Ignition wire is simply, but too simple and obviously easy to by-pass. For my old Ford, i disable it with the crankshaft sensor, since it would not start without it. I am using Intel Edison or Raspberry Pi to control an relay. Both can do the job. Edison is better because of the small size and embedded flash; However, it is also worse


optical lightning detector

Started by Cydrome Leader in sci.electronics.design10 years ago 46 replies

I want to concoct a trigger to fire my camera when there's lightning in the area of where the camera is pointed. I do not want one of the RF...

I want to concoct a trigger to fire my camera when there's lightning in the area of where the camera is pointed. I do not want one of the RF burst detectors, as I don't care about lightning that's not in front of the camera itself. I'm thinking about some sort of photodiode mounted in a housing peeping through the viewfinder for actual flash detection. Past that, I'm not too sure of wha...


super simple pulse stretcher

Started by bitrex in sci.electronics.design9 years ago 37 replies

I have a need to take a square pulse of 0V/+5V and about 5-10ms duration, and stretch it out long enough to flash a LED brightly enough to be...

I have a need to take a square pulse of 0V/+5V and about 5-10ms duration, and stretch it out long enough to flash a LED brightly enough to be visible indoors under "ordinary" lighting conditions. I currently only have op-amps on the board and would rather not add any logic ICs to do this. So using low-speed op amps and discretes would be fine. The pulse source into the stretcher would...


Back to the Days of DOS

Started by Rick C in sci.electronics.design3 years ago 11 replies

I used to know DOS pretty well. I am copying a lot of files to a flash drive for backup and need to verify what has been transferred by comparing...

I used to know DOS pretty well. I am copying a lot of files to a flash drive for backup and need to verify what has been transferred by comparing directories. A simple count is sufficient. Trouble is I'm getting incomplete data. I'm using a DIR command to a file, then examining the files to see how many files are missing. My text editor can do a diff if the counts don't match. When I...


Atheros 9285 eeprom problem

Started by Anonymous in sci.electronics.design10 years ago 2 replies

My HP came with a Broadcom Wifi adapter, but i want to switch it to Atheros= . I got a few PCIe 9285 adapters. They are identical except for...

My HP came with a Broadcom Wifi adapter, but i want to switch it to Atheros= . I got a few PCIe 9285 adapters. They are identical except for the subsy= stem ID: The HP branded adapter did not work at first, but works after re-flashing i= t. The non-HP adapter works on another labtop but lockup the bios on the H= P, with non-supported device message. I am trying to re-flash the non-HP ...


Writing to MCU flash

Started by Phil Hobbs in sci.electronics.design5 years ago 108 replies

So we've got this custom product that includes a voltage-controlled amplifier. VCA chips as used in ultrasound and so on have nice low noise...

So we've got this custom product that includes a voltage-controlled amplifier. VCA chips as used in ultrasound and so on have nice low noise at the highest gains, but at low gain they stink on ice. The same is true of all transconductance-based VCAs unless you use a zillion stages. Sooo, we're faking it with a dpot, an op amp with a mux-controlled resistor ladder, and an LPC804 Cort...


Nice MCU for small jobs

Started by Phil Hobbs in sci.electronics.design6 years ago 96 replies

LPC804: 15 MHz Cortex M0+, 32kB flash, 4k RAM, 12-bit 2 us ADC with 1 LSB DNL, 10-bit DAC, the usual serial stuff, 20-TSSOP: 67 cents in...

LPC804: 15 MHz Cortex M0+, 32kB flash, 4k RAM, 12-bit 2 us ADC with 1 LSB DNL, 10-bit DAC, the usual serial stuff, 20-TSSOP: 67 cents in reels, dev board $27. We're using it for a super-quiet diode laser controller where it will run the temperature control and automatic power control loops. I'll never use another ATmega. ;) Cheers Phil Hobbs -- Dr Philip C D Hobbs Principa...


Trion bitstream compression test

Started by John Larkin in sci.electronics.design1 year ago 17 replies

Suppose we read in an FPGA bitstream file as 16-bit words, and want to output a compressed file, to save room in a small flash chip. If an...

Suppose we read in an FPGA bitstream file as 16-bit words, and want to output a compressed file, to save room in a small flash chip. If an input word is 0000, output a single 0 bit to the compressed file. If a word is nonzero, output a 1 followed by that 16-bit word. The decompressor will be very simple. I wrote a little PowerBasic program to test the compression, the input being ...