New! SD Card Adapter available now
parts-man73
Posts: 830
I would like to announce the availability of my new SD Card Adapter for the Propeller.
What is it?
The Propeller SD card adapter combines a SD card socket with the requisite pull up resisters. Only the SD card connections that are important for SPI interfacing are included in the connector. This provides an easy connection to many existing Propeller development setups, including the Protoboard, Propeller education kit and the Demo Board.
This is available now on my website - ucontroller.com/ There is a link to the illustrated documentation right on the main page. The selling price is $17.50 plus shipping. The first batch will come fully assembled and tested, but it is really intended to be a kit. Subsequent batches will require some soldering. The Surface mount SD socket will always be done, but the easier to solder, through-hole parts, will need to be added before use.
I have tested it with a few different SD card demos that are available on this forum:
Baggers amazing graphics demo
and the Kiosk Demo from the Embedded Systems Conference
If you have any questions about this adapter, please feel free to ask!
This was originally designed for the SpinStudio system that I had announced back in December. Several things have happened since then to delay the release of SpinStudio. A user error (mine) on my computer caused the loss of all the original circuit board files. But I re-created them, better than before. Also my Wife and I welcomed our newest son on December 27th.
SpinStudio will be available over the next few weeks, The Mainboard and the plug-in modules will be listed at uController.com as documentation and kitting is completed.
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Brian Meade
"They who dream by day are cognizant of many things which escape those who dream only by night" - Edgar Poe
What is it?
The Propeller SD card adapter combines a SD card socket with the requisite pull up resisters. Only the SD card connections that are important for SPI interfacing are included in the connector. This provides an easy connection to many existing Propeller development setups, including the Protoboard, Propeller education kit and the Demo Board.
This is available now on my website - ucontroller.com/ There is a link to the illustrated documentation right on the main page. The selling price is $17.50 plus shipping. The first batch will come fully assembled and tested, but it is really intended to be a kit. Subsequent batches will require some soldering. The Surface mount SD socket will always be done, but the easier to solder, through-hole parts, will need to be added before use.
I have tested it with a few different SD card demos that are available on this forum:
Baggers amazing graphics demo
and the Kiosk Demo from the Embedded Systems Conference
If you have any questions about this adapter, please feel free to ask!
This was originally designed for the SpinStudio system that I had announced back in December. Several things have happened since then to delay the release of SpinStudio. A user error (mine) on my computer caused the loss of all the original circuit board files. But I re-created them, better than before. Also my Wife and I welcomed our newest son on December 27th.
SpinStudio will be available over the next few weeks, The Mainboard and the plug-in modules will be listed at uController.com as documentation and kitting is completed.
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Brian Meade
"They who dream by day are cognizant of many things which escape those who dream only by night" - Edgar Poe
Comments
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Brian Meade
"They who dream by day are cognizant of many things which escape those who dream only by night" - Edgar Poe
Thank you for reminding me. This first batch of boards had a circuit for the "card detect" switch on the SD socket. I meant for the LED to turn on when a card was inserted. This was really just "Fluff" that is not necessary for operation. It will be eliminated on the next batch, as it did not work as intended. But as I said, it's not necessary, so the LED and resistor holes are left un-populated.
The 20 pin header is for future use with the SpinStudio system when it is released.
I'll post a Schematic later today in the Documentation on my website.
A little background on what SpinStudio is:
SpinStudio consists of a Mainboard, that a DIP Propeller is mounted to, along with the EEPROM, voltage regulators, and a programming header. There are 4-20 pin sockets for plug-in modules to attach to. This splits the Propeller's I/O lines into 4 groups of 8.
Each socket provides access to 8 I/O lines, 3.3 Volts, 5 volts, ground and I2C(SDA and SCL). I have modules for VGA, Keyboard and mouse, SD Card, Composite Video and Sound, Servos and general I/O and LCD.
I will post more information about SpinStudio in a different thread later.
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Brian Meade
"They who dream by day are cognizant of many things which escape those who dream only by night" - Edgar Poe
Too bad Vdd is on the end (instead of Vss), otherwise it would connect right up the my Prop Dongle...
Nice job Brian.
Bean.
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“The United States is a nation of laws -· poorly written and randomly enforced.” - Frank Zappa
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Thanks for the complement!
I made the header so that it would plug right in to the proto board without modification.
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Brian Meade
"They who dream by day are cognizant of many things which escape those who dream only by night" - Edgar Poe
I just ordered mine.
If you want to be first in line for the second batch, Feel free to place an order now. I will also be posting another announcement when the second batch is in.
Thanks for the overwelmingly positive response!
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Brian Meade
"They who dream by day are cognizant of many things which escape those who dream only by night" - Edgar Poe
The rail you have the ground wire plugged into is available, but the one you're using for 3.3V is already tied to ground.
Not saying it's impossible; there are still several ways to hook it up to the PE Kit, but that's not one of them unless you lay everything out differently.
move parts as you wish to different locations. The solution I presented was with a bare breadboard, In the default PE setup, there are
several parts in the way, the power indicator LED, and the voltage regulators are physically in the way. Nothing a few short jumper
wires to an adjacent board won't fix.
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Brian Meade
"They who dream by day are cognizant of many things which escape those who dream only by night" - Edgar Poe
{7/9 added alternative.gif}
Post Edited (Fred Hawkins) : 7/10/2007 2:56:44 AM GMT
I would like to see the schematic disgram.
I want to clean up the schematic some, than I will post it, both here, and in the documentation on my website . If I don't have time to post it tonight, I'll definitely get it done tommarrow. Sorry, that should have been part of the documentation from the start.
BTW...I think I mentioned it before, but I'll mention it again. There is a spot for both a LED and a resistor that are unused. It was originally supposed to be a "card inserted" indicator. But the sockets did not operate as per their datasheet. The resistor and LED have been dropped from the design. They were really just "fluff" anyway, really served no purpose.
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Brian Meade
"They who dream by day are cognizant of many things which escape those who dream only by night" - Edgar Poe
I want to use a propeller chip as the uP in an mp3 player. I hope it a good match, I am a bit of a noob, having programmed basic stamps and industrial PLC's. I am excited about getting back to designing! Wish Me luck, guys!
Also, I'll be posting notice when the next batch of circuit boards are in, should be within a few days. Many of you have ordered them ahead of time. I thank you all, and they will ship as soon as they arrive.
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Brian Meade
"They who dream by day are cognizant of many things which escape those who dream only by night" - Edgar Poe
The documentation and schematic is accurate and well presented, Thanks for the update.
FYI, I pre-ordered mine !
Rob7
I used 90 degree male headers from a different supplier to put some of these together. Unnoticed by me, I shipped them. The problem with these other headers, is that the legs are shorter, and they don't reach far enough into a solderless breadboard to make contact.
I was using a ProtoBoard with a female header socket to test each SD Adapter before I shipped them, the legs are long enough that application, this problem only occurs when plugging into a solderless breadboard.
If you received one (or more) of these and you are using it to plug into a solderless breadboard, please contact me. I will also be sending emails to any customers that received their order out of the second batch. The second batch is identified by the absence of a spot to mount an LED (unpopulated) I attached a picture of one customers fix to the problem. He trimmed the bottom of the circuit board. The 2 "tunnels" above the penny are to pass jumper wires underneath the board. If you'd prefer not to modify your circuit board, we can discuss exchanges, or other work-arounds. Perhaps the leads could straighted with pliers or a vise, and bent so they extend straight down.
Also, if you plan to use with a ProtoBoard, or other type of printed circuit board, the current connector is sufficient.
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Brian Meade
"They who dream by day are cognizant of many things which escape those who dream only by night" - Edgar Poe