The 502HTA is a complete redesign of the highly popular 503HTA. We have increased the size to standard shield size and significantly reduced the noise floor. We have also added the ability to power the PI from it's own supply to eliminate any noise coupling from the Pi. Main features are: FORM FACTO...
Pi 2 Design (my company) did a Pi Zero DAC hat (and we also have an SSD hat w/wifi) with both analog line out and digital SPDIF. We've tested with Volumio and OSMC. We use the same DAC, PCM5102A as Pimoroni, and had no issues running it. IIRC we did not have to modify the stock Volumio. Cheers, Mich...
New photos of the Rev 2 version just built! https://ksr-ugc.imgix.net/assets/011/112/429/5f6ba7884c0193a6e2ad4d3cfed80344_original.jpg?w=680&fit=max&v=1462491247&auto=format&q=92&s=7c33c1ef4099592f1f4d5570e9d12d3f Also shown on the Kickstarter page: https://www.kickstarter.com/projects/1815752970/hy...
Update - The blank PCB's for the carrier and the blades have arrived. It will take a few weeks to gather up the parts to build a couple of carriers and 20 or so blades. Then of course, we need to wait on the Compute Module 3. Hopefully when they come out they won't become hard to get. If anyone at t...
Quick update - We just received the second revision PCB's and will be building them early next week. If you want to get on the mailing list you can do that at http://www.pi2design.com. We will be offering the units at the $99 on Kickstarter, but limited to the first 100. Those on the mailing list wi...
Update - We just finished testing with the 6922/6DJ8 tube from JJ electronics. Very good results, at low voltage output of<=2Vrms (6V pk-pk) it has lower distortion than the 12AU7, but this requires a higher plate bias voltage (16V versus 12.5V). This limits the headroom for higher impedance headpho...
Thanks for the referral mobileHman! Yes, our 502V2S takes in the HDMI output of the Pi and brings out the 7.1 audio stream. It send the HDMI back out so you can still send that to the TV. No data is lost. The 7.1 audio stream is sent to four PCM5122 Stereo DAC's and is accessed via four 3.5mm audio ...
Thanks Martin! Price is still TBD, but we expect the carrier to be under $300 (with a CM1 or CM3) and the blade boards under $70 (w/o CM3). Add in the cost of the CM, but without an SSD yields around $1.4K assuming the CM 3 is still under $40. That's ~$1.4K for forty 1.2Ghz 64-Bit ARM Cortex-A53 cor...
We have a Pi HAT that has a USB hub built in that connects to a Wifi Module, Bluetooth and a Mini-PCIe socket for a USB cell modem (includes a SIM socket). This is our 503U3G. It is due to be released early next month. We have protos now. If you send an email to sales@pi2design.com so we can send yo...
The HAT size forced the use of small SMT components, plus the DAC itself is fine pitch. The only option I could think of is to leave all the through hole off, but we worry about the level of quality required even for that. It would likely have to be offered without warranty. I wonder if that would b...
Hello all. We just finished testing the prototypes for a small Hat size add-on. It connects to the PI I2S port. A PCM5102A DAC drives single 12AU7 tube gain stage with solid state Class-A output. It is designed to drive headphones from 32 to 300 ohm quite easily. The design is derived from the popul...
A quick update. Raspberry PI Zero production is restarting in Wales next Monday after a hiatus to allow us to focus on Raspberry Pi 3 (a million units built and counting :D). We have placed 250ku of new orders, and are aiming to produce at least 50ku/month for the rest of this year. Distribution wi...
As mentioned earlier, we have a block diagram of the 501M10 carrier and the 501CMX blade. The link is http://www.pi2design.com/uploads/4/8/5/3/48531975/visio-501m10_block.pdf . The 3D PDF for the 501M10 is here: http://www.pi2design.com/uploads/4/8/5/3/48531975/501m10_3d_p1.pdf (warning 21MB!) and t...
Yes, we saw your announcement awhile ago. We had looked at doing something similar, since we already had the Compute Module design, plus we have designed some Pi-Zero Hats ( http://www.pi2design.com/store/p10/504DAC1_-_Digital-to-Analog_Converter_for_the_Raspberry_Pi_Zero.html and http://www.pi2desi...
To the right of the CM is an M.2 SSD socket. we are showing an example of an M.2 SSD Module loaded into the socket. This was done to give each CM it's own local storage.
The BMC interfaces to each CM over USB for programming. It uses GPIO to control power and reset. It also takes the CM UART and allows remote console access. The BMC programs the GIGe switches and has a 10/100 link into one of them. The BMC has a USB host port and HDMI for local use. As for running G...
I developed a multiple CM cluster a few months back, but held off fabbing. Once I saw the reference to the CM3 in the Pi 3 announcement I went ahead and sent it to the fab house. Should be back in a few weeks. I am looking to get some CM3's as soon as possible, but we'll debug using CM1. Note that w...
I developed a multiple CM cluster a few months back, but held off fabbing. Once I saw the reference to the CM3 in the Pi 3 announcement I went ahead and sent it to the fab house. Should be back in a few weeks. I am looking to get some CM3's as soon s possible, but we'll debug using CM1. Note that we...