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Description
OrangeCrab (Discontinued)The OrangeCrab is a feather form factor electronics development board. For the Lattice ECP5 FPGA. The board follows the slim feather board specification from Adafruit. The FPGA is compatible with all open source toolchains and is perfect for experimenting with RISC V cores. There aren't many FPGA boards available that make use of the ECP5, but here are some distinct features that set this board apart: Small Compact size (Take it anywhere!) Direct USB
The OrangeCrab is a feather form factor electronics development board. For the Lattice ECP5 FPGA. The board follows the slim feather board specification from Adafruit. The FPGA is compatible with all open source toolchains and is perfect for experimenting with RISC-V cores. There aren't many FPGA boards available that make use of the ECP5, but here are some distinct features that set this board apart:
- Small Compact size (Take it anywhere!)
- Direct USB connection to the FPGA (Operate as a DFU, MSC, CDC, or composite device!)
- On-board DDR3 Memory (1Gbit!)
- Pre-loaded DFU bootloader (No external programmer required!)
- It's Orange!
The current hardware version that we are shipping is V0.2.1.
Hardware Overview
| Lattice ECP5-25F FPGA | Lattice ECP5-85F FPGA |
|
|
- DDR3L Memory
- 128 Mbytes (1Gbit)
- 64M x16
- 1.35V low voltage operation
- USB-C connection
- Full-speed (12Mbit) USB with a direct connection to the FPGA
- Non-volatile Storage
- 128Mbit QSPI FLASH Memory
- Bootloader (First 4Mbits)
- User Bitstream
- User storage (Firmware/MSC backend/etc)
- QSPI compatible
- MicroSD socket
- 4bit SD interface (CK, CMD, DAT0-3)
- 128Mbit QSPI FLASH Memory
- Power supply
- High efficiency DCDC for main supplies
- Battery charger (100mA), with a charge indicator LED
- LiPo battery connector (PH type)
- 48MHz onboard oscillator
- User I/O
- 1x Button
- 1x RGB LED
- 20x I/O on 0.1" headers
- Analog System
- Analog Mux
- SAR ADC, external RC / input comparator of FPGA
- Digital bypass
- Internal channels for supply monitor
- Battery voltage sensing
- Feather Format Board
- Dimensions: 22.86mm x 50.8mm (0.9" x 2.0").
Compact Size
Unlike traditional FPGA development boards, this board is small enough to carry in your pocket and function as a prototyping ground for custom SoC designs.
If you are not familiar with the feather format, you might be surprised by the size of this board. The Feather format has dimensions of: 22.86 x 50.8mm (0.9" x 2.0")
For reference this is the board pictured next to some standard ISO/IEC 7810 ID-1 cards.
Example Projects
- OrangeCrab-examples - still a work in progress
- DFU Bootloader - The DFU bootloader that ships with the OrangeCrab.
- Linux-On-Litex - Running Linux on the Orange Crab
Community
If you have questions or want to chat with the community, you can find them on our Discord server and the OrangeCrab forum category.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 200 reviews
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Product Reviews
★★★★★ 5
Great quality Soap
Scent: Oatmeal Shea (Unsented)
This natural bar soap is absolutely fantastic! I’ve purchased it multiple times now, and it has never disappointed. The quality is consistent with every bar — it lathers well, cleans thoroughly, and leaves my skin feeling fresh without any dryness.
I really appreciate that it’s made with natural ingredients, and the scent is clean and refreshing without being overpowering. It lasts a good amount of time, making it a great value as well.
Overall, this is a high-quality soap I keep coming back to. The fact that I’ve bought it multiple times says it all — it’s reliable, gentle, and one of the best natural soaps I’ve used. Highly recommended!
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Reviewed in the United States on November 7, 2025
★★★★★ 3
Sometimes Size Does Matter
Scent: Alpine & Spice, Scent: Alpine & Spice
Let me just get this out of the way now the soap itself smells decent, nothing wrong there. I only wish I got another cent. Not that this one smells bad it’s just it wasn’t my cup of tea. I’m mostly disappointed about the size because I’ve been through this before. The soaps themselves are not big enough to fill out the box as you can spot in some of the pictures and video. I honestly feel like the soap size was different in the pictures of the customer reviews that I saw. Each bar may last me a week and a half and that’s with a soap saver. To be honest, the box that it came in would fit two decent size soaps if they filled out the box.
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Reviewed in the United States on November 19, 2025
★★★★★ 5
As expected
Scent: vanilla orange
Love the scents of this soap. It's gentle on my skin and leaves me clean, fresh and soft.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
A Comprehensive Balanced History of the Guadalcanal Campaign -- Must Read!
Format: Hardcover
I've read a number of good books on the Guadalcanal campaign, and always thought that "Neptune's Inferno" by Hornfischer was the absolute best.
I was wrong. Although Hornfischer does a superb account of the Navy and its travails and triumphs, Inferno doesn't delve deeply into the Marine (and Army) land battles. This book does both. Moreover, it provides a continuous timeline of both, and does so in such a way that the reader better understands both as related actions. For instance, I was never really aware that for the first three and a half months the Americans controlled the seas during daylight, and the Japanese at night (sounds a little like Viet Nam). The November 13 sea battle between Americans and Japanese -- in which US cruisers took on Japanese battleships and two American admirals died -- was in fact a clash of a major last ditch effort by the Japanese to reinforce their troops and destroy Henderson Field, which would have allowed them to control the seas both day and night. By that time there had been multiple bloody battles ashore between the Marines and Japanese, with the balance favoring the Marines, but if the Japanese had wrested control of the airfield and seas that would have been old history. The book includes a good view from the Japanese perspective, and some little known historical tidbets as well, e.g., Guadalcanal received its name from the Spanish home town of a ships officer who accompanied Spanish explorer Don Alvaro Medana, who discovered the island during a 1568 expedition to discover the fabled King Solomon's gold mines. Who knew? :-)
Bottom line: I highly recommend this book, both for its balanced coverage of the entire campaign, land and sea, and even more for its integrated narrative -- you know what was taking place (or had taken place) on almost a day-by-day basis, which allows the reader to fully appreciate how actions ashore influenced those at sea, and vice versa.
IMO, a must read, even for those who thought (like me) that they knew it all!
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Reviewed in the United States on October 12, 2017
★★★★★ 5
The Island Of Death
Format: Hardcover
On August 7th, 1942, American Marines stormed ashore on Guadalcanal. What lay before them was a six-month odyssey of fighting against the best of what the Japanese had to offer. In this fine book, author Joseph Wheelan describes the battle that turned the tide in the Pacific War.
The Japanese had started construction of an airfield on Guadalcanal. If completed, Japanese aircraft would be able to harass American convoys and threaten Australia. The Americans seized the airfield and eventually, planes from the Cactus Air Force began attacking the Japanese.
Throughout the book, the reader learns about all phases of the Guadalcanal campaign, including the battles of Alligator Creek and Bloody Ridge. On the sea, the Americans and Japanese slugged it out at Savo Island, as well as the great naval battles of November, 1942. Names such as Chesty Puller, John Baslone, "Archie" Vandegrift, Joe Foss, and "Bull" Halsey became household names in the United States.
Each side lost many men, ships, and planes, but the tenacity and, finally, the industrial might and the ability to rapidly replace losses, led the Americans to victory. Never again would the Japanese regain the offensive in the Pacific War.
"Midnight in the Pacific" is a very good book, and the author has done a good job of describing all of the main points of the battle. Each chapter is broken down into a single month's worth of action, and the narrative is well-written. Highly recommended.
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Reviewed in the United States on September 25, 2017
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