Black Mesa Labs created this board that adds a Lattice FPGA to a Raspberry Pi:
BML has been very much enchanted with the Lattice FPGA boards for Raspberry Pi, IcoBoard , BlackIce and IceHat. The IceZero board is a BML creation that attempts to combine the best features of all 3 boards into a single design.
IceZero features common with other designs
- Fully Open-Source Hardware and Software Design.
- Lattice ICE40HX4K FPGA that supports Clifford Wolf’s Project IceStorm tool chain.
- Interfaces to Raspberry Pi 2×20 GPIO Header for both power and bus interfaces.
- PROM programmable directly from Rasp Pi, no JTAG programmer required.
- External SRAM, supporting soft CPU core designs ( code execution ).
- Extra large SPI PROM, supporting soft CPU core designs ( code storage ).
- Industry standard PMOD expansion headers
IceZero features that are BML specific
- Mesa Bus Protocol 32 MHz SPI link between CPU and FPGA.
- 2-Layer PCB design. Orderable via OSH-Park or Gerbers for Downloading.
- FTDI 1×6 USB Serial Cable header for use with PC instead of Pi ( or as a soft CPU debug Trace Port ).
- Single Pi UART plumbed to FPGA for muxing to multiple external serial devices.
BlackMesaLabs has shared the board on OSH Park:
BML IceZero Lattice ICE40 FPGA for RaspPi
Alan Mitchell designed this board to interface 1-wire sensors to a Raspberry Pi computer:
This board is part of Alan’s Raspberry Pi data collection system:
The Mini-Monitor software is data acquisition software that runs on a Raspberry Pi computer. It is designed to post the collected data to the BMON web-based sensor reading database and analysis software, but the software can be modified to post to other Internet databases. The Mini-Monitor software has the ability to collect data from a number of different sources
Synchro Labs created this project to demonstrate the use of the Synchro mobile app platform with custom hardware:
based on a Raspberry Pi 3 Model B and a custom-designed hardware board used to control four DC liquid peristaltic pump motors using two L293D dual H-bridge ICs
Hardware design files are available on GitHub:
Video of Drinkro in action:
Combo board for the Raspberry Pi with IR receiver and transmitter along with Real-Time Clock and coin cell battery:
I needed an IR receiver for my Raspberry Pi which I use as an internet TV receiver [..] Solution: make my own.
kentauta has shared the board on OSH Park:
Need additional, custom IO for your Raspberry Pi? Adding an FPGA is a logical way to expand your IO, and allow for high speed digital interfaces. [Eric Brombaugh]’s Icehat adds a Lattice iCE5LP4K-SG48 FPGA in a package that fits neatly on top of the Raspberry Pi Zero. It also provides a few LEDs and Digilent compatible PMOD connectors […]
via Give Your RPi a Cool FPGA Hat — Hackaday
Knudt designed this board to connect an inexpensive dual-band GSM module with to an Orange Pi or Raspberry Pi:
The config files and EAGLE design files can be downloaded from the Hackaday.io project:
mincepi adds WiFi to the Raspberry Pi Zero without using USB:
$5 WiFi for the Pi Zero without using USB
More information is on the creators website:
mincepi has shared the board on OSH Park: