Low cost 32-bit controller board
Posted by dc42
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Re: Low cost 32-bit controller board August 31, 2015 02:08PM |
Hows it going with the board dc42?? 
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Re: Low cost 32-bit controller board August 31, 2015 06:11PM |
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TRoager
Hows it going with the board dc42??
I've given up on my original design, for two reasons:
1. The kit manufacturers I spoke to didn't want plug-in drivers, because on-board drivers are more reliable and bring the cost down. So the market for the board would have been limited.
2. Since I started the design, Replikeo has started second-sourcing the Duet. They are now selling it for $49.99, which is less than the price I would have sold my board at, AND it has Ethernet. The MKS SBASE Smoothieware-compatible has also appeared and is selling at $56.53. The AZSMZ Mini (a 32-bit board with plug-in drivers and no Ethernet) has come down to $50. So there are already at least three low-cost 32-bit boards available.
I'm now working on a design with built-in WiFi.
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
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Re: Low cost 32-bit controller board September 01, 2015 04:16AM |
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dc42
Quote
TRoager
Hows it going with the board dc42??
I've given up on my original design, for two reasons:
1. The kit manufacturers I spoke to didn't want plug-in drivers, because on-board drivers are more reliable and bring the cost down. So the market for the board would have been limited.
2. Since I started the design, Replikeo has started second-sourcing the Duet. They are now selling it for $49.99, which is less than the price I would have sold my board at, AND it has Ethernet. The MKS SBASE Smoothieware-compatible has also appeared and is selling at $56.53. The AZSMZ Mini (a 32-bit board with plug-in drivers and no Ethernet) has come down to $50. So there are already at least three low-cost 32-bit boards available.
I'm now working on a design with built-in WiFi.
The ESP8266??
I understand that the marker would be small but isnt it already small?
I can ser the other boards but im not quite sure those fit my needs, i was thinking og developing a board but my money says no :b
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Re: Low cost 32-bit controller board September 01, 2015 07:24AM |
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dc42
Yes I am looking at using one of the ESP8266 variants to provide the WiFi connection. The challenge is to get the wifi and I/O throughput high enough to give a good speed for uploading files to the SD card. This may require a major rewrite of the ESP8266 firmware.
Well i found this and looks like its quite active in periods
[github.com]
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Re: Low cost 32-bit controller board September 01, 2015 09:23AM |
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TRoager
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dc42
Yes I am looking at using one of the ESP8266 variants to provide the WiFi connection. The challenge is to get the wifi and I/O throughput high enough to give a good speed for uploading files to the SD card. This may require a major rewrite of the ESP8266 firmware.
Well i found this and looks like its quite active in periods
[github.com]
Like every other ESP8266 solution I have seen, that uses async serial comms between the ESP8266 and the host. That's OK for just monitoring and controlling the printer, but nothing like fast enough for file upload. The max achievable speed would be about 25kbytes/second, compared to 200kbytes/sec on a Duet using the Ethernet port (and work is in hand to increase that). So my first task will be to modify the ESP8266 firmware to use SPI with something like a 2Mbit transfer speed between the host and the ESP8266, unless someone has done that already.
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
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Re: Low cost 32-bit controller board September 01, 2015 10:53AM |
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dc42
Quote
TRoager
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dc42
Yes I am looking at using one of the ESP8266 variants to provide the WiFi connection. The challenge is to get the wifi and I/O throughput high enough to give a good speed for uploading files to the SD card. This may require a major rewrite of the ESP8266 firmware.
Well i found this and looks like its quite active in periods
[github.com]
Like every other ESP8266 solution I have seen, that uses async serial comms between the ESP8266 and the host. That's OK for just monitoring and controlling the printer, but nothing like fast enough for file upload. The max achievable speed would be about 25kbytes/second, compared to 200kbytes/sec on a Duet using the Ethernet port (and work is in hand to increase that). So my first task will be to modify the ESP8266 firmware to use SPI with something like a 2Mbit transfer speed between the host and the ESP8266, unless someone has done that already.
Found this :b maybe you can use that?
[github.com]
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Re: Low cost 32-bit controller board September 01, 2015 01:14PM |
Hope it helps .
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Re: Low cost 32-bit controller board September 24, 2015 11:00AM |
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AndrewBCN
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vreihen
They are calling it the "Red Rabbit" board:
http://www.3dxmy.com/?p=822
No sense of how they stand on open-source, but a huge concern that the firmware was apparently developed in-house and obviously has a lot of custom code to run the color touchscreen. On the plus side, the top-of-the-line board with a larger touchscreen and dual hotends is under $73 at today's exchange rate.....
If you don't have the source code or even if you do manage somehow to get your hands on the source code, but all the comments are in Chinese and/or it's not clean, easy to read the code, then it makes for a $73 paperweight.
works great, mine is a corexy. runs all standard gcode, and the config file is in mostly readable english. you program it by "printing" the config file. it can also run a 3$ esp8266 for communication (they have an android app). you'd be hard pressed to get any other board and screen for that price, especially with 5 motor outputs and thermocouple options (in addition to thermistors)
mine uses dual z motors (i split the output) with dual extruders
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Re: Low cost 32-bit controller board October 03, 2015 09:32AM |
I also use Low-cost 32-bit controller board CBD Tech
very good product at a price of $ 82
and do not need developers to upgrade firmware always
Now also print clay
Edited 1 time(s). Last edit at 10/03/2015 09:35AM by maralb.
DELTA Printer - Duet -Touch5" - E3D_V6
very good product at a price of $ 82
and do not need developers to upgrade firmware always
Now also print clay
Edited 1 time(s). Last edit at 10/03/2015 09:35AM by maralb.
DELTA Printer - Duet -Touch5" - E3D_V6
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