Loading...Please wait one moment.

Humble iCE

A budget FPGA development board based on Lattice iCE40UP5k and Raspberry Pi RP2040.
Humble iCE
Humble iCE
Pre Launch
0 of 2
Humble iCE Humble iCE
Receive Campaign Updates

Product Details


Humble iCE

Brand / Manufacturer

Electronut Labs

Manufacturer Part #


Product Description

Humble iCE is a low cost FPGA development board based on Lattice iCE40UP5k and 
Raspberry Pi RP2040. 

Hardware Specifications

1. Lattice Semiconductor iCE40UP5k FPGA 
2. Raspberry Pi RP2040
3. 32 Mb Flash
4. 2 x 2x20 2.54 mm headers (3 x PMOD iCE40, 1 x PMOD RP2040) 
5. RP2040 SWD (debug) header
6. 1 x Red LED RP2040
7. 1 x Blue LED iCE40
8. 1 push button reset
9. 1 push button RP boot 
10. 1 push button iCE40
11. USB Type-C connector
12. 4 x mounting holes

The schematic for the board can be found here.


The RP2040 serves as the bitstream uploader and communication bridge for iCE40. 
4 extra GPIO lines connect the two chips. In the default RP firmware, it exposes two CDC 
USB ports when plugged in. One is used to send the bitstream from your computer 
using a Pythion script. The second port can be used to communicate with a UART 
module in FPGA fabric. RP receives the bistream and uploads it via SPI to the 
FPGA. To save costs, we're using SPI slave mode configuration for this board. 
The bitstream is saved in the flash. When the RP boots up, if it finds a 
bistream in the flash, it will upload it to iCE40 via SPI.

Another cost saving measure used in the board: the XTAL on RP2040 is used 
to supply the clock for the iCE40 using clk_gpout.

There are more possibilities here - for instance, with custom RP firmware, you 
can use the iCE40 as a compute accelerator and transfer data back and forth 
via SPI using the 4 lines.


Purchase Information

Unit Deliverable

One Humble iCE development board

Lead Time

30 Days


Sponsor the great works of our community of developers and conservation technologists who are trying to make a real difference. Contact us at sponsor@groupgets.com for more information about becoming a campaign sponsor. For help or any other questions, please submit a support ticket here.


Do you have questions before you back this campaign? We would love to answer them for you! You can either Contact Us or join in on the discussion.


We are proud to support Humble iCE in reaching its goal.


GroupGets is a trusted platform to help companies and makers sell their products in bulk while getting individuals the best prices.

Featured Campaigns


EcoFlow RIVER 2 Bundle





Get easy access to power anywhere with this EcoFlow Power Station and Solar Generator group buy!   This Bundle Includes 1 x EcoFlow RIVER 2 2 x 110W Portable Solar P... View Campaign

Naadi Doota - WiFi +BLE Pulse Oximeter and Heart rate s...





IoT vital parameter platform nicknamed "Naadi Doota",integrated  board SPO2-Heart rate sensor + ESP32 available for all IoT makers and manufacturing communities. Features... View Campaign

3 axis gyroscope that acts as potentiometer!





After the success of the Iota V2, I had a lot of request to integrate the gyroscope in projects that use potentiometers. After making a modified version for many clients... View Campaign