LoFive is a lightweight SiFive Freedom E310 open source SoC evaluation kit. The E310 leverages the Free and Open RISC-V Instruction Set Architecture originally developed by UC Berkeley and now has wide industry support via the RISC-V Foundation. Don't let the board's understated name and openness fool you - this MCU packs some impressive specs and the board was designed by the prolific QWERTY Embedded Design founder, Michael Welling.
Follow @QwertyEmbedded and @groupgetscom to get the latest updates on toolchain, accessory, and app development for this board.
(click to open a larger image)
MCU – SiFive Freedom E310 (FE310) 32-bit RV32IMAC processor @ up to 320+ MHz (1.61 DMIPS/MHz)
Storage - 128-Mbit SPI flash (ISSI IS25LP128)
Expansion - 2x 14-pin headers with JTAG, GPIO, PWM, SPI, UART, 5V, 3.3V and GND
Misc - 1x reset button, 16 MHz crystal
Power Supply - 5V via pin 1 on header; Operating Voltage: 3.3 V and 1.8 V
Campaign funded, scheduled end date:
Thu, 22 Feb 2018 20:52:00 -0800
Factory Lead Time
GroupGets will handle the shipment of orders for this product.
Options and Add-Ons
FTDI Breakout - FTDI FT2232H-56Q MINI MDL
FTDI Breakout used for programming the LoFive.
Premium Female/Male 'Extension' Jumper Wires - 20 x 3" (7.62cm)
20x3" (7.62cm) Female to Male Jumper Wires.
Premium Male/Male Jumper Wires - 20 x 3" (7.62cm)
20x3" (7.62cm) Male to Male Jumper Wires.
Premium Female/Female Jumper Wires - 20 x 3" (7.62cm)
20x3" (7.62cm) Female to Female Jumper Wires.
Full sized breadboard
This is a 'full-size' breadboard, 830 tie points. Good for small and medium projects. It's 2.2" x 7" (5.5 cm x 17 cm) with a standard double-strip in the middle and two power rails on both sides. The back is made of foam double-sided tape, if you remove the protective paper you can attach it to a flat clean surface.
Diffused RGB 5mm LED (25 pack)
Diffused 5mm tri-color LEDs with separate red, green and blue LED chips inside!
This is a group buy campaign that needs to acquire at least the stated minimum amount of pledges from backers like you before the Unit Deliverable and any Add-Ons ship. We do not charge anyone until the Progress above hits 100% or greater, otherwise there is no charge. All campaign products are vetted as existing and functional so your order will be fulfilled within the Factory Lead Time if the campaign succeeds. Please see our FAQ page for more details on our billing process.
I have just created the GroupGet for LoFive RISC-V (Round 2)!
Post last edited: about 1 year ago
Can we have some cheaper international shipping? I'm in Australia, shipping amounts to $45 which is a bit much for a $25 board.
I would really appreciate a cheaper shipping method. Cheers!
Post last edited: about 1 year ago
We are actively working on it and totally get your concern. For all EU orders under 10 units, we are doing freight forwarding to the campaign initiators in the UK who when ship out for cheaper. Aus is a bit harder but we are working on it.
When do you think you'll have a definitive answer to this?
I would love to show some support and get some boards shipped over here, but I'm only ordering for myself and doubling my costs just because shipping is a no go for me.
@sbstnp, our web development has slowed down for the year but it will get picked up again in Jan.
@Sergey, the shipping calculator will tell you the cost when you plug in your address during the order.
Does anyone have any benchmarks on SPI performance on this chip?
All, the overseas shipping costs for this round are what they are as calculated with our shipping calculator. We're sorry but we refuse to ship items without tracking and insurance. We normally do big-ticket stuff here on the platform that requires higher levels of service. Lesson learned with this board.
We are giving Michael Welling some to sell in-person at some upcoming conferences that he'll be attending. Check his twitter for details: @QwertyEmbedded
Post last edited: 11 months ago
We are happy to announce that we now have a cheaper shipping solution in place for international orders (for small items like LoFive). The new rate is plugged in now!
Care to share some details? For me shipping to Australia went up to $51, so even with very bad math I can tell that's actually more expensive, not less.