chubby75
Linsn RV901T HUB75 LED "Receiver Card" Reverse Engineering (by q3k)
litex-boards
LiteX boards files (by litex-hub)
| chubby75 | litex-boards | |
|---|---|---|
| 4 | 5 | |
| 515 | 342 | |
| - | 2.6% | |
| 3.8 | 9.3 | |
| 28 days ago | 3 days ago | |
| Python | Python | |
| Creative Commons Zero v1.0 Universal | BSD 2-clause "Simplified" License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
chubby75
Posts with mentions or reviews of chubby75.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2021-04-21.
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BeagleBoard Announces BeagleV-Fire with RISC-V and FPGA
DE10-Nano used to be ~$100 2 years ago before FPGA vendors decided to stop manufacturing while bumping prices.
$30 is a good price for FPGA dev board, requires a little creativity https://github.com/q3k/chubby75/tree/master
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Interfacing FPGA with Ethernet PHY over RGMII
I am now trying to make use of the on-board Ethernet PHYs, which on my revision of the board are Realtek RTL8211FD chips. More details on the board V8.0 revision here. And the Realtek datasheet is here.
- How is the led screens interconnected and what communication protocol is used?
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Driving large RGB LED matrices
Rather than designing your own PCB, I suggest that you use a ColorLight 5A-75 LED driver board. These are commercial boards that are designed to drive LED panels. They contains Lattice ECP5 FPGAs and have been completely reverse engineered for hobby use. They are very cheap, around $20 on AliExpress.
litex-boards
Posts with mentions or reviews of litex-boards.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-11-05.
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How to find out how a RISC-V CPU is running on a board?
Initial LiteX support for LimeSDR mini V2 is available on LiteX repository. You should be able to boot many of the RISC-V cores using just that. [Crowd Supply Update]
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Initial Litex support for NEORV32 RISC-V core
Here is a list of boards that are supported "out of the box" by Litex: https://github.com/litex-hub/litex-boards
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[Q] Recommendation for the best FPGA board in learning ethereum mining and/or machine learning acceleration
There may be other similar inexpensive boards available where you live based on newer FPGA families such as Gowin. The list of LiteX-supported boards keeps growing! https://github.com/litex-hub/litex-boards/tree/master/litex_boards/targets
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Interfacing external memory with an FPGA
A starting point could be the litex-boards readme, it will give you an idea of what's possible. A $10+ ECP5 can interface with 8-128 MiB of SDRAM, and even DDR3 SDRAM for larger ones. An example board is the ULX3S, with available schematics and KiCad project.
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Interfacing FPGA with Ethernet PHY over RGMII
This Colorlight board already has support for Litex. See [here](https://github.com/litex-hub/litex-boards/blob/master/litex_boards/targets/colorlight_5a_75x.py). I haven't tried it myself, but it might be useful to start with that and see if you can get some ideas about what's going wrong?
What are some alternatives?
When comparing chubby75 and litex-boards you can also consider the following projects:
colorlight-led-cube - 64x64 LED Cube based on the Colorlight 5a-75B LED driver board.
ulx3s - PCB for ULX3S FPGA R&D board
rpi-rgb-led-matrix - Controlling up to three chains of 64x64, 32x32, 16x32 or similar RGB LED displays using Raspberry Pi GPIO
LimeSDR-Mini-v2_GW - LimeSDR Mini v2 gateware project
cube