|Shopping Cart Checkout Shipping Cost Download Website|
|Home||MP3 Player||8051 Tools||All Projects||PJRC Store||Site Map|
|You are here: PJRC Store MP3 Player Unassembled Kit||Search PJRC|
MP3 Player Board, Unassembled KitThis MP3 player circuit board contain all the components require to build the new MP3 Player design. After the board is assembled, a hard disk drive, standard 72-pin SIMM memory, and power source are needed to make a complete player.
The STA013 MP3 decoder chip, CS4334 DAC, and VP5_0060 transformer, MAX810 and NPS8434 are surface mount components. The ICs are 50 mil (1.27 mm) lead spacing parts, which are low density pin spacing, but can still be quite a challenge for anyone without experience soldering surface mount components. If you're not comfortable soldering these surface mount parts, please consider the fully assembled board.
These parts come packaged in 10 bags, corresponding to the assembly steps, which are packaged into two larger bags together with the chips and sockets.
It seems reasonable at first that assembly and testing takes more time and would cost more, and our 8051 development board kit is sold at a lower price than its assembled version. We originally sold this kit for $10 less than the assembled version, but we quickly discovered three realities:
So, we decided to continue the unassembled kits with Rev C (and part of the motivation for Rev C's much more rugged power supply design was ease the troubleshooting of these kits). Afterall, the purpose of the site is to provide cool projects for hobbists to build, and it was clear we had at least some folks who really want to build it themselves. Starting with rev C, we set the price the same as the assembled board, just $10 more, to address worst problem where some would buy it to save a few dollars without considering the work required. We began shipping Rev C unassembled kits (and everyone who waited during Rev B got it at the original lower price).
Tech support is still sometimes a nightmare, and in those really tough cases we just have the customer return the board and I repair it instead of spending endless emails or phone calls "shooting in the dark". On the other hand, a good number of people build the kit and get it to work perfectly on the first try. Usually "no news is good news", but it's really kind of inspiring to hear when someone has a good experience with the kit.
We really do want to help everyone have a successful project experience. For some people, that includes soldering all the parts by hand. If that's what you want, and you're up to the task, then this unassembled kit is for you, and we hope you can understand the experiences we've had over the last couple years and why this kit has the same price as the assembled and tested board.
For hobbists on a budget, where saving a buck is the most important factor, the best approach is to buy a used board. We've made this for some time and every now and then someone sells their board, usually posting in the Yahoo user group. Often times they include a simm, laptop hard drive or other items. Soldering all the parts is not a good way to save money, and historically most of the people who decided to solder themselves simply to save some money ended up spending more than they would have just going with the assembled board.
Please choose wisely. If building it yourself is important and gives you personal satisfaction, the unassembled kit is still available and we'll be there to support you.
Related PJRC Project Pages