Well, there’s been an update from krtkl, but snickerdoodle black wasn’t mentioned. I guess no news is bad news. They mentioned the supply chain has completely broken down, they just can’t get parts. Not that that helps the backers. They still haven’t gotten to the point that they are making piSmashers. So the snickerdoodle black wouldn’t do me too much good. Maybe if I could get the software I could start developing something for the vapor hardware.
More 4: snickerdoodle
Well, there haven’t been any updates from krtkl about progress on shipments, so I’ve started to look around for another vendor that supplies an SBC integrated with an FPGA for a project I want to do. Results for my search so far has yielded the SYZYGY Brain-1 at $350 which comes from a company with a little more street cred, Opal Kelly, and the Z-turn board at $119 from MYIR Tech Limited. The $99 part is a Zynq-7010 part whereas I’m interested in the more powerful Zynq-7020 at $119. I sent off an inquiry to the company, but so far I haven’t heard back from them.
More 3: snickerdoodle
Well, here’s the latest update from krtkl:
snickerdoodle black – qty 1
This is a pre-order. Originally expected to ship on Jun 29, 2016
Currently expected to ship on Apr 20, 2018
piSmasher SBC – qty 1
This is a pre-order. Originally expected to ship on Jun 29, 2016
Currently expected to ship on Mar 08, 2018
More 2: snickerdoodle
Well. still waiting for delivery. I contacted Krtkl and told them it was a waste to ship me the snickerdoodle black without the pi smasher. So maybe they’ll just ship them both a the same time.
Here’s their video of the snickerdoodle:
Here’s some specs
| features | snickerdoodle one | snickerdoodle black |
| chipset | Xilinx Zynq-7010 | Xilinx Zynq-7020 |
| CPU | 32-bit dual-core ARM Cortex-A9 w/640kB cache and 2x 128-bit NEON coprocessors | 32-bit dual-core ARM Cortex-A9 w/640kB cache and 2x 128-bit NEON coprocessors |
| performance | 3,335 DMIPS/2.6 GFLOPS@667 MHz | 4,330 DMIPS/3.4 GFLOPS@866 MHz |
| flash | 16MB XIP NOR + up to 200GB SDIO NAND via captive microSD card cage | 16MB XIP NOR + up to 200GB SDIO NAND via captive microSD card cage |
| DRAM/bandwidth | 512MB/25.6Gbps | 1GB/25.6Gbps |
| SRAM/bandwidth | 256kB/28.4 Gbps | 256kB/36.9 Gbps |
| reconfigurable hardware | 430K gates/17,600 LUT-6 | 1.3M gates/53,200 LUT-6 |
| 32-bit performance | 143,150 MIPS@350 MHz | 587,575 MIPS@475 MHz |
| distributed RAM | 270kB/3,354Gbps | 630kB/10,275Gbps |
| DSP performance | 74 GMACs/31.8 GFLOPS@461 MHz | 276 GMACs/121.5 GFLOPS@599 MHz |
| total user GPIO | 155 | 179 |
| reconfigurable I/O performance | 16x ADC/100x GPIO/46.2Gbps | 16x ADC/125x GPIO/75.7Gbps |
| fixed GPIO | 33x GPIO, 4x I2S audio, 14x I2C, 1x ADC, 2x DAC | 33x GPIO, 4x I2S audio, 14x I2C, 1x ADC, 2x DAC |
| Wi-Fi | 150Mbps SISO 2.4GHz 802.11n | 150Mbps 2×2 MIMO 2.4GHz/5GHz 802.11n |
| Bluetooth | – | 3Mbps dual-mode Bluetooth 4.0 Classic+EDR/BLE |
| antenna | dual-band antenna, switched U.FL ports | dual-band antenna, switched U.FL ports |
| serial interfaces | 2x gigabit ethernet, 2x CAN, 2x I2C, SPI, UART, USB 2.0 high-speed, microUSB console/JTAG | 2x gigabit ethernet, 2x CAN, 2x I2C, SPI, UART, USB 2.0 high-speed, microUSB console/JTAG |
| analog interfaces | 2x 1MSPS 12-bit ADCs w/16 channel multiplexer, 2x 1MSPS 12-bit DACs | 2x 1MSPS 12-bit ADCs w/16 channel multiplexer, 2x 1MSPS 12-bit DACs |
| other peripherals | 5x LEDs, 2x pushbuttons, secure cryptographic key/certificate storage | 5x LEDs, 2x pushbuttons, secure cryptographic key/certificate storage |
| software support | iOS/Android app, Snappy Ubuntu Core Linux, Python, Java, C/C++, ROS, FreeRTOS | iOS/Android app, Snappy Ubuntu Core Linux, Python, Java, C/C++, ROS, FreeRTOS |
| power | 5V via microUSB or 3.7V-17V via power pins | 5V via microUSB or 3.7V-17V via power pins |
| dimensions | 3.5” x 2.0” (88.9mm x 50.8mm) | 3.5” x 2.0” (88.9mm x 50.8mm) |
More: snickerdoodle
Well, I’ve got another update. Snickerdoodle black is now due December 28, 2017 and the piSmasher SBC is now due March 8, 2018. Just another disappointment. I wonder if it was just an overly ambitious project. There’s been a number of schedule delays .Krtkl does keep us updated on the latest delay, I’ll give them that. I’ll be interesting to work with a Xilinx processor after being away for about 15 years. Yeah, 2003 was the last time I touched one of their processors.
More on snickerdoodle
The one positive thing is that if I ordered the snickerdoodle black now it’s up to $195 and the piSmasher SBC board is up to $195, but I’m not sure whether what I bought are the same devices. It’s taken so long to get these, I don’t even know what I’m going to use them for, because the project I was going to use them for has been shelved.
Snickerdoodle redux
Well, this is the latest update from Crowd Supply:
Originally expected to ship on Jun 29, 2016
Currently expected to ship on Oct 31, 2017
Snickerdoodle Black
Still waiting for my snickerdoodle black. The last update from krtkl set a delivery date of July 31, 2017.
HTTP CODES
Just found a useful web page that has http return codes, including some nonstandard ones. The page is on Wikipedia and is http codes.
Tools
“It’s a poor craftsman that blames his tools”
Well, we’re trying this again
I think this is the third web hosting company in 3 years. I hope I don’t have to do this again. My Dotster web site was apparently hacked and everything I tried to fix it didn’t work. No help from Dotster, their support was non-existent.
First blog post
This is your very first post. Click the Edit link to modify or delete it, or start a new post. If you like, use this post to tell readers why you started this blog and what you plan to do with it.
I’m going to discussing the trials and tribulations of developing on cheap single board computers like the Raspberry Pi, Pine A64, and the krtkl Snickerdoodle ( I bought the Snickerdoodle Black which uses a Xilinx 7020 SoC).
I’ll also discuss Smalltalk, my favorite programming language, since I discovered it in that Byte magazine issue from 1983. It was powerful paradigm back in the early ’80s, and still is.
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