Tiny Arm Processor and FPGA that fit inside of a USB Socket
Tim 'Mithro' Ansell, a busy guy, has come up with a couple of tiny circuit board designs shaped like a USB plug, so tiny that only 4 small pads (that might be usable a capacitive switches) stick out of the USB socket.
Too busy to code applications for the Tomu stealth dongle using a Silicon Labs EMF32, 25 MHz ARM Cortex M0+ processor with 54K flash and 8K ram, he gave away a couple hundred boards to the creative crowd at the 2018 Hackaday Superconference in order to inspire coding contributions.
Tomu is offered at CrowdSupply for $30, 2 for $35, 5 for $65.
It could be programmed to preform dongle tasks good or evil, like as a Universal 2nd Factor Authentication Key (U2F)
A second design fitting the same footprint that he came up with is the Fomu a tiny FPGA board, which he passed on to a fellow in Singapore who is offering it on CrowdSupply for $45, due to ship ship Jun 30, 2019.
The Fomu uses a Lattice ICE40UP5K FPGA with 5280 Logic Elements, 660 Logic Array Blocks, and eight DSP blocks with 16x16 bit multiply, and a 45 Mhs clock.
We may have to wait to see what applications, that make sense running as a PC accessory, become available. You can configure it to emulate a new Risc-V open source processor, which in turn can run python. (a few of these might add significant processing power. plugged into a Raspberry Pi)
Too busy to code applications for the Tomu stealth dongle using a Silicon Labs EMF32, 25 MHz ARM Cortex M0+ processor with 54K flash and 8K ram, he gave away a couple hundred boards to the creative crowd at the 2018 Hackaday Superconference in order to inspire coding contributions.
![]() |
| Tomu |
Tomu is offered at CrowdSupply for $30, 2 for $35, 5 for $65.
It could be programmed to preform dongle tasks good or evil, like as a Universal 2nd Factor Authentication Key (U2F)
--------------
A second design fitting the same footprint that he came up with is the Fomu a tiny FPGA board, which he passed on to a fellow in Singapore who is offering it on CrowdSupply for $45, due to ship ship Jun 30, 2019.
The Fomu uses a Lattice ICE40UP5K FPGA with 5280 Logic Elements, 660 Logic Array Blocks, and eight DSP blocks with 16x16 bit multiply, and a 45 Mhs clock.
We may have to wait to see what applications, that make sense running as a PC accessory, become available. You can configure it to emulate a new Risc-V open source processor, which in turn can run python. (a few of these might add significant processing power. plugged into a Raspberry Pi)
![]() |
| Fomu |


Comments
Post a Comment