hmm that would pretty much require an ECP5, the ICE40 is a bit too small
September 27, 2026 at 3:40 PM
hmm that would pretty much require an ECP5, the ICE40 is a bit too small
These 5 are ready to go! In stock at Tindie: www.tindie.com/products/347... (peep the palindrome product ID @tindie.com gave it)
March 1, 2025 at 10:31 PM
These 5 are ready to go! In stock at Tindie: www.tindie.com/products/347... (peep the palindrome product ID @tindie.com gave it)
**Interesting SPI Routing with iCE40 FPGAs**
I wrote about iCE40 FPGAs, and why the way an FPGA is configured can lead to interesting board design decisions. @mith.ro's Fomu is a useful study due to eschewing a USB-Serial chip for accessing the FPGA and SPI flash.
danielmangum.com/posts/spi-ro...
I wrote about iCE40 FPGAs, and why the way an FPGA is configured can lead to interesting board design decisions. @mith.ro's Fomu is a useful study due to eschewing a USB-Serial chip for accessing the FPGA and SPI flash.
danielmangum.com/posts/spi-ro...
November 7, 2025 at 12:34 PM
**Interesting SPI Routing with iCE40 FPGAs**
I wrote about iCE40 FPGAs, and why the way an FPGA is configured can lead to interesting board design decisions. @mith.ro's Fomu is a useful study due to eschewing a USB-Serial chip for accessing the FPGA and SPI flash.
danielmangum.com/posts/spi-ro...
I wrote about iCE40 FPGAs, and why the way an FPGA is configured can lead to interesting board design decisions. @mith.ro's Fomu is a useful study due to eschewing a USB-Serial chip for accessing the FPGA and SPI flash.
danielmangum.com/posts/spi-ro...
Do you hate medical debt? Do you also love FPGAs? What about RP2040? If so, you can get yourself an RPGA Feather and help tackle medical debt today! (Seriously, I’m drowning in it 🥲) www.tindie.com/products/347...
RPGA Feather - RP2040 + iCE40 by Oak Development Technologies on Tindie
Coming soon - RPGA Feather - The RP2040 + iCE40 Feather for Sensor Fusion Goodness
www.tindie.com
May 20, 2025 at 12:19 AM
Do you hate medical debt? Do you also love FPGAs? What about RP2040? If so, you can get yourself an RPGA Feather and help tackle medical debt today! (Seriously, I’m drowning in it 🥲) www.tindie.com/products/347...
Hi, I am having a sale on my remaining inventory on @tindie.com it’s running until everything is gone so head on over and grab some cool stuff like the RPGA Feather! #maker #electronics #tindie #rp2040 www.tindie.com/products/oak...
RPGA Feather - RP2040 + iCE40 by Oak Development Technologies on Tindie
Coming soon - RPGA Feather - The RP2040 + iCE40 Feather for Sensor Fusion Goodness
www.tindie.com
August 21, 2025 at 8:36 PM
Hi, I am having a sale on my remaining inventory on @tindie.com it’s running until everything is gone so head on over and grab some cool stuff like the RPGA Feather! #maker #electronics #tindie #rp2040 www.tindie.com/products/oak...
it's fine, i've done that in my ICE40 designs.
April 6, 2025 at 3:29 PM
it's fine, i've done that in my ICE40 designs.
Hey folks, I have a handful of pre-tariff built RPGA Feather available if you’re interested in snagging one. I have a handful of mini panels left so I can hold this price for the next few I assemble. I’m not sure how many I’ll make after that though. www.tindie.com/products/347...
RPGA Feather - RP2040 + iCE40 by Oak Development Technologies on Tindie
Coming soon - RPGA Feather - The RP2040 + iCE40 Feather for Sensor Fusion Goodness
www.tindie.com
April 28, 2025 at 5:51 PM
Hey folks, I have a handful of pre-tariff built RPGA Feather available if you’re interested in snagging one. I have a handful of mini panels left so I can hold this price for the next few I assemble. I’m not sure how many I’ll make after that though. www.tindie.com/products/347...
The C0-microSD is a powerful, iCE40-based FPGA that brings Signaloid's sophisticated uncertainty-tracking technology to your hardware. Watch as Alex Glow takes a closer look!
🔎 Signaloid C0-microSD: A Portable FPGA // Tech Highlight
The C0-microSD is a powerful, iCE40-based FPGA that brings Signaloid's sophisticated uncertainty-tracking technology to your hardware. Packed down into a microSD form factor, it can run autonomously i...
www.hackster.io
February 2, 2025 at 3:05 PM
The C0-microSD is a powerful, iCE40-based FPGA that brings Signaloid's sophisticated uncertainty-tracking technology to your hardware. Watch as Alex Glow takes a closer look!
while the iCE40 doesn't officially support 1.2v IO banks it will definitely work fine if you undervolt the 1.8v IO :)
July 3, 2025 at 1:14 AM
while the iCE40 doesn't officially support 1.2v IO banks it will definitely work fine if you undervolt the 1.8v IO :)
Hot and ready to test, flash, and package 😎
March 1, 2025 at 9:50 PM
Hot and ready to test, flash, and package 😎
in about a day's work i learned WiX and built an MSI installer for #GlasgowInterfaceExplorer! look at it, it includes everything (Python, Yosys, nextpnr-{ice40,ecp5}, Python libraries, the manual) in a package that is just under 90 MB and fully self-contained.
August 2, 2026 at 10:26 PM
in about a day's work i learned WiX and built an MSI installer for #GlasgowInterfaceExplorer! look at it, it includes everything (Python, Yosys, nextpnr-{ice40,ecp5}, Python libraries, the manual) in a package that is just under 90 MB and fully self-contained.
Cleaning up old designs has been a great reason for me to do more in KiCAD. Here is the RPGA Feather, an RP2040 + iCE40 FPGA!
March 25, 2024 at 10:50 PM
Cleaning up old designs has been a great reason for me to do more in KiCAD. Here is the RPGA Feather, an RP2040 + iCE40 FPGA!
I respect the GameTank project's "moxie" but $299 is kind of a lot considering I can¹ get a Mister for half that and I can² also plug a $30 ice40 FPGA directly into VGA and synthesize a simple riscv chip to run a game on it. Just like. I don't know. I don't know
¹ did
² intend to sometime this year
¹ did
² intend to sometime this year
February 25, 2026 at 10:37 PM
I respect the GameTank project's "moxie" but $299 is kind of a lot considering I can¹ get a Mister for half that and I can² also plug a $30 ice40 FPGA directly into VGA and synthesize a simple riscv chip to run a game on it. Just like. I don't know. I don't know
¹ did
² intend to sometime this year
¹ did
² intend to sometime this year
ICYMI I wrote about how FPGAs are configured and why that can lead to some interesting SPI routing on Lattice iCE40 development boards.
**Interesting SPI Routing with iCE40 FPGAs**
I wrote about iCE40 FPGAs, and why the way an FPGA is configured can lead to interesting board design decisions. @mith.ro's Fomu is a useful study due to eschewing a USB-Serial chip for accessing the FPGA and SPI flash.
danielmangum.com/posts/spi-ro...
I wrote about iCE40 FPGAs, and why the way an FPGA is configured can lead to interesting board design decisions. @mith.ro's Fomu is a useful study due to eschewing a USB-Serial chip for accessing the FPGA and SPI flash.
danielmangum.com/posts/spi-ro...
November 8, 2025 at 1:17 PM
ICYMI I wrote about how FPGAs are configured and why that can lead to some interesting SPI routing on Lattice iCE40 development boards.
i implemented Ascon-Hash256 in Amaranth! (as well as laid the groundwork for the rest of Ascon family functions, including Ascon-AEAD128)
it comes at 1268 LUTs for iCE40 in the "compact" configuration, processing an average of 5.3 bit/cycle. a little […]
[Original post on mastodon.social]
it comes at 1268 LUTs for iCE40 in the "compact" configuration, processing an average of 5.3 bit/cycle. a little […]
[Original post on mastodon.social]
December 27, 2025 at 3:52 PM
i implemented Ascon-Hash256 in Amaranth! (as well as laid the groundwork for the rest of Ascon family functions, including Ascon-AEAD128)
it comes at 1268 LUTs for iCE40 in the "compact" configuration, processing an average of 5.3 bit/cycle. a little […]
[Original post on mastodon.social]
it comes at 1268 LUTs for iCE40 in the "compact" configuration, processing an average of 5.3 bit/cycle. a little […]
[Original post on mastodon.social]
This is how you do image recognition in cheap surveillance cameras & autonomous killer drones. Yea, maybe it's "AI" but it's NOT a language model.
Just a cheap FPGA chip and some good, old-fashioned algorithms
github.com/Barry-194/fp...
Just a cheap FPGA chip and some good, old-fashioned algorithms
github.com/Barry-194/fp...
GitHub - Barry-194/fpga_image_processing2: IP operations in verilog (simulation and implementation on ice40)
IP operations in verilog (simulation and implementation on ice40) - Barry-194/fpga_image_processing2
github.com
May 3, 2025 at 7:07 PM
This is how you do image recognition in cheap surveillance cameras & autonomous killer drones. Yea, maybe it's "AI" but it's NOT a language model.
Just a cheap FPGA chip and some good, old-fashioned algorithms
github.com/Barry-194/fp...
Just a cheap FPGA chip and some good, old-fashioned algorithms
github.com/Barry-194/fp...
I have released Sentinel v0.1.0-beta.2.
Sentinel is my microcoded RISC-V CPU core written in Amaranth. It fits in ~1000 LUTs and ~400 FFs on an ice40 FPGA. It implements RV32I_Zicsr and the M Mode privileged spec, and passes the RISCOF and RISC-V Formal test suites.
codeberg.org/cr1901/sentinel
Sentinel is my microcoded RISC-V CPU core written in Amaranth. It fits in ~1000 LUTs and ~400 FFs on an ice40 FPGA. It implements RV32I_Zicsr and the M Mode privileged spec, and passes the RISCOF and RISC-V Formal test suites.
codeberg.org/cr1901/sentinel
sentinel
Another size-optimized RISC-V CPU for your consideration.
codeberg.org
May 10, 2026 at 2:48 AM
I have released Sentinel v0.1.0-beta.2.
Sentinel is my microcoded RISC-V CPU core written in Amaranth. It fits in ~1000 LUTs and ~400 FFs on an ice40 FPGA. It implements RV32I_Zicsr and the M Mode privileged spec, and passes the RISCOF and RISC-V Formal test suites.
codeberg.org/cr1901/sentinel
Sentinel is my microcoded RISC-V CPU core written in Amaranth. It fits in ~1000 LUTs and ~400 FFs on an ice40 FPGA. It implements RV32I_Zicsr and the M Mode privileged spec, and passes the RISCOF and RISC-V Formal test suites.
codeberg.org/cr1901/sentinel
And Oak Dev Tech has made contributions to the CircuitPython ecosystem too! IcePython is a great tool for programming ICE40 FPGA from CircuitPython. github.com/skerr92/Oakd...
GitHub - skerr92/Oakdevtech_CircuitPython_IcePython: A library for programming iCE40 FPGA from Lattice Semi
A library for programming iCE40 FPGA from Lattice Semi - skerr92/Oakdevtech_CircuitPython_IcePython
github.com
August 21, 2026 at 7:19 PM
And Oak Dev Tech has made contributions to the CircuitPython ecosystem too! IcePython is a great tool for programming ICE40 FPGA from CircuitPython. github.com/skerr92/Oakd...
yeah looks fine. you have a VGA core that fits in that ICE40?
April 6, 2025 at 3:52 PM
yeah looks fine. you have a VGA core that fits in that ICE40?
Since the last batch of Lattice FeatherWing sold out, I made 10 more. That effectively wipes out remaining iCE5LP4K I had on hand. Next batch with see a slight price increase due to ye ole ridiculous tariffs. www.tindie.com/products/oak...
Lattice FeatherWing - The iCE40 FeatherWing by Oak Development Technologies on Tindie
An iCE40 FeatherWing to bring FPGA to your Adafruit Feather Projects!
www.tindie.com
September 4, 2026 at 12:06 AM
Since the last batch of Lattice FeatherWing sold out, I made 10 more. That effectively wipes out remaining iCE5LP4K I had on hand. Next batch with see a slight price increase due to ye ole ridiculous tariffs. www.tindie.com/products/oak...
Sentinel is my microcoded RV32I_Zicsr FPGA core. It implements the Unprivileged and Privileged Spec in ~1000 iCE40 logic cells (but insns are multicycle).
It'll be 1 year since I announced it on Nov 29th. I'd like to cut a release for it. We'll see.
github.com/cr1901/senti...
It'll be 1 year since I announced it on Nov 29th. I'd like to cut a release for it. We'll see.
github.com/cr1901/senti...
GitHub - cr1901/sentinel: Another size-optimized RISC-V CPU for your consideration.
Another size-optimized RISC-V CPU for your consideration. - cr1901/sentinel
github.com
November 24, 2024 at 12:55 AM
Sentinel is my microcoded RV32I_Zicsr FPGA core. It implements the Unprivileged and Privileged Spec in ~1000 iCE40 logic cells (but insns are multicycle).
It'll be 1 year since I announced it on Nov 29th. I'd like to cut a release for it. We'll see.
github.com/cr1901/senti...
It'll be 1 year since I announced it on Nov 29th. I'd like to cut a release for it. We'll see.
github.com/cr1901/senti...
Back in Stock! RPGA Feather - RP2040 + iCE40 by Oak Development Technologies
View on Tindie #DIYElectronics
View on Tindie #DIYElectronics
March 1, 2025 at 4:28 PM
Back in Stock! RPGA Feather - RP2040 + iCE40 by Oak Development Technologies
View on Tindie #DIYElectronics
View on Tindie #DIYElectronics
As you all know, today is #circuitpythonday! To celebrate, you can get 10% off your order on the Tindie shop by using CIRCUITPYDAY at checkout. Good for two items. RPGA Feather is CircuitPython ready as is BREAD ESP32-S2! www.tindie.com/products/oak...
RPGA Feather - RP2040 + iCE40 by Oak Development Technologies on Tindie
RPGA Feather - The RP2040 + iCE40 Feather for Sensor Fusion Goodness
www.tindie.com
August 21, 2026 at 3:43 PM
As you all know, today is #circuitpythonday! To celebrate, you can get 10% off your order on the Tindie shop by using CIRCUITPYDAY at checkout. Good for two items. RPGA Feather is CircuitPython ready as is BREAD ESP32-S2! www.tindie.com/products/oak...
And the board that started my journey of making FPGA Feather boards the Lattice FeatherWing. Compatible with all Adafruit Feathers www.tindie.com/products/oak...
Lattice FeatherWing - The iCE40 FeatherWing by Oak Development Technologies on Tindie
An iCE40 FeatherWing to bring FPGA to your Adafruit Feather Projects!
www.tindie.com
February 22, 2025 at 5:50 PM
And the board that started my journey of making FPGA Feather boards the Lattice FeatherWing. Compatible with all Adafruit Feathers www.tindie.com/products/oak...
If you ever thought to yourself, “I really wish I could program iCE40 FPGA with circuitpython.” You’re in luck: https://github.com/skerr92/Oakdevtech_CircuitPython_IcePython
GitHub - skerr92/Oakdevtech_CircuitPython_IcePython: A library for programming iCE40 FPGA from Latti...
A library for programming iCE40 FPGA from Lattice Semi - GitHub - skerr92/Oakdevtech_CircuitPython_IcePython: A library for programming iCE40 FPGA from Lattice Semi
github.com
July 28, 2023 at 10:45 PM
If you ever thought to yourself, “I really wish I could program iCE40 FPGA with circuitpython.” You’re in luck: https://github.com/skerr92/Oakdevtech_CircuitPython_IcePython