PanelDue (touch-screen controller for Ormerod) availability
Posted by dc42
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Re: PanelDue (touch-screen controller for Ormerod) availability March 05, 2015 09:19AM |
Now that I have added full support for the 5 inch display to PanelDue, I thought it was time to look at alternative 5 inch displays.
The one I tested with is the ITBD02-5.0 here [imall.iteadstudio.com]. The price is $44 + $6.43 shipping, + any import VAT you get stung for. Shipping to the UK takes about a week.
There is another 5 inch display here [www.ebay.co.uk] and here [www.ebay.co.uk]. The price is about GBP21.50 including shipping, plus import VAT if you get charged it (sadly, the basic price of the display is a little over the UK import VAT threshold). These are the same suppliers (possibly both the same supplier?) that provide the alternative 4.3 inch display that works with PanelDue. I expect this one to work too. Like the alternative 4.3 inch displays, the connector is on the side instead of at the bottom. The only uncertainty I have about it is that if it takes much more than 300mA from the 3.3V supply to power the backlight, then the 3.3V regulator on the PanelDue may get rather hot. The Itead display runs from 5V, so this does not apply.
I have around 20 PanelDue boards left. I understand that Think3DPrint3D have a few complete kits including 4.3 inch display left too.
Here are some pics taken with the 5 inch display. I would be grateful for suggestions on how to improve the layouts and/or make more use of the graphical capability of the display.
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].
The one I tested with is the ITBD02-5.0 here [imall.iteadstudio.com]. The price is $44 + $6.43 shipping, + any import VAT you get stung for. Shipping to the UK takes about a week.
There is another 5 inch display here [www.ebay.co.uk] and here [www.ebay.co.uk]. The price is about GBP21.50 including shipping, plus import VAT if you get charged it (sadly, the basic price of the display is a little over the UK import VAT threshold). These are the same suppliers (possibly both the same supplier?) that provide the alternative 4.3 inch display that works with PanelDue. I expect this one to work too. Like the alternative 4.3 inch displays, the connector is on the side instead of at the bottom. The only uncertainty I have about it is that if it takes much more than 300mA from the 3.3V supply to power the backlight, then the 3.3V regulator on the PanelDue may get rather hot. The Itead display runs from 5V, so this does not apply.
I have around 20 PanelDue boards left. I understand that Think3DPrint3D have a few complete kits including 4.3 inch display left too.
Here are some pics taken with the 5 inch display. I would be grateful for suggestions on how to improve the layouts and/or make more use of the graphical capability of the display.
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: PanelDue (touch-screen controller for Ormerod) availability March 05, 2015 10:42AM |
Having looked a little closer at those EBAY 5" displays they look to have a separate 5V line for the Backlight it that a possibility?
Doug
p.s. I will be needing one of those boards but not till end of the month if you could reserve one for me it would be appreciated?
Doug
p.s. I will be needing one of those boards but not till end of the month if you could reserve one for me it would be appreciated?
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dc42
Now that I have added full support for the 5 inch display to PanelDue, I thought it was time to look at alternative 5 inch displays.
The one I tested with is the ITBD02-5.0 here [imall.iteadstudio.com]. The price is $44 + $6.43 shipping, + any import VAT you get stung for. Shipping to the UK takes about a week.
There is another 5 inch display here [www.ebay.co.uk] and here [www.ebay.co.uk]. The price is about GBP21.50 including shipping, plus import VAT if you get charged it (sadly, the basic price of the display is a little over the UK import VAT threshold). These are the same suppliers (possibly both the same supplier?) that provide the alternative 4.3 inch display that works with PanelDue. I expect this one to work too. Like the alternative 4.3 inch displays, the connector is on the side instead of at the bottom. The only uncertainty I have about it is that if it takes much more than 300mA from the 3.3V supply to power the backlight, then the 3.3V regulator on the PanelDue may get rather hot. The Itead display runs from 5V, so this does not apply.
I have around 20 PanelDue boards left. I understand that Think3DPrint3D have a few complete kits including 4.3 inch display left too.
Here are some pics taken with the 5 inch display. I would be grateful for suggestions on how to improve the layouts and/or make more use of the graphical capability of the display.
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Re: PanelDue (touch-screen controller for Ormerod) availability May 03, 2016 08:43PM |
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dc42
PanelDue is not SPI based. Even low res mono graphics LCDs such as the 12864 place a substantial load on the main processor. A high res display with 16-bit colour such as the ones that PanelDue supports would need about 500 times the amount of data to be generated by the main processor and transferred over the SPI bus. This is totally impractical. Therefore, PanelDue has its own 32-bit processor to drive the display. It uses async serial comms to the main board, which also allows much longer cable lengths than for SPI or I2C based displays.
cool. to many that would sound ridiculous - to put a 2nd EC equivalent to the one on the duet itself on a daughterboard to drive an LCD, but i'm familar with ECs, i'm using one in the EOMA68 Libre Laptop: the extra memory in the EC used for the display would act as a buffer. communication via the UART would be reduced to "commands and status". I Get It
what's the processor chosen on the paneldue? [edit, below: found it] reason i ask, is: the 64-pin variant the STM32F070 is around $1.20, you wouldn't need the STM32F072 (that's the USB-based version, aka "crystal-less" but actually what it does is PLL-locks the main clock frequency to the host USB DM+ and DM-, ST then charge an extra $0.50 for the privilege... saves board space and hassle as far as i'm concerned, but you're not using USB here so the STM32F070 would do) - it's one of the cheapest highest-functional highest-speed ARM Cortex processors i've yet been able to find... that is also easily-supported by libopencm3. i've written a GPLv3+ LCD driver for the HX8357D based on analysis of the adafruit and the linux kernel driver code, so _that's_ taken care of.
btw the HX8357D also has an 8-bit, 16-bit and 24-bit parallel "bus" mode (not the same as RGB/TTL) so you could actually do pretty damn quick screen-updates... *without* needing a relatively-expensive EC that absolutely has to have an RGB/TTL interface. the LCD manufacturer i found provides access to *all* the different modes of the HX8357D controller IC - RGB/TTL, SPI (3-wire), SPI (4-wire), 8-bit bus, 16-bit bus, 24-bit bus, and a couple more, i think.
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You can reduce the cost of a PanelDue setup by.purchasing the control board from me or Filastruder, buying the display direct from China via eBay, and making the cable yourself (I include connectors with the board). Naturally, a complete kit of board + display + cable purchased in Europe or the US will cost more.
apologies, i may not have made it clear by sharing the information about the components that i have sourced from other PCB projects: i'm a Libre Hardware and Libre Software PCB and EC design engineer: i'm not looking to buy a control board, i'm looking to share the benefit of some design, purchasing and component sourcing experience with you from a large and libre hardware project that i'm running, so that you can evaluate that knowledge and information with a view to reducing the BOM and the cost of a future version of the PanelDue.for future buyers.
the supplier that i found of LCDs is in china: they supply direct (they don't do ebay). they manufacture on-demand, and their prices are extremely good - the lowest EC-compatible-without-absolutely-needing-RGB/TTL i've ever been able to find, and i've been looking for a *long* time. i was quoted $USD 25 for the exact same 3.5in 480x272 plus CTP arrangement from one supplier - this one is $8. they would probably do a 5in display for around the $12 to $14 mark, including CTP.
if you're interested and can meet a group buy MOQ with the team at wedo3dprinting of say 100 units absolute lowest quantity, i can ask them what they can do, if you like. they have a full range of LCDs in these small sizes - 320x240 all the way up to 800x600. their 1024x600 is also extremely competitive, b:t:ut it's a bit odd power-wise and they don't get many orders for it. the rest are large volume so the prices are extremely good.
[update: found the wordpress site with a brief spec of the paneldue]
found it: [miscsolutions.wordpress.com] - ATSAMS3B. which is [www.atmel.com] yowser - $3 in volumes of 3.5k. so it'll be $5 and above in small volumes from digikey... hoo-boy [www.digikey.com] yep, $6 in qty 1... yowch.
compare that pricing to this: [www.digikey.com] which is $2.66 for QTY 1 and drops to $1.30 for 2.5k
when it's the main component of the board, $5 down to $2 is quite a big drop.
Edited 1 time(s). Last edit at 05/03/2016 09:10PM by lkcl.
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Re: PanelDue (touch-screen controller for Ormerod) availability May 04, 2016 12:53PM |
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dc42
The choice of processor was driven by the following factors:
- Enough pins to drive low-cost touch screens having a 16-bit parallel interface.
I started off designing it around a ATmega32u4 with an extra 8-bit latch to provide more output pins, but it quickly became clear that it provided insufficient flash and RAM. That's when I moved to the ATSAM3S2B. It would be possible to use a more complex firmware update procedure involving uploading new firmware through the serial port via the main board, but that would require even more support in the main board firmware, which I want to avoid. The processors costs me about £2.60 each in quantity, so there isn't a very great saving to be made anyway.
hilarious, isn't it: you think, "oh i know, i'll add a few extra GPIOs using an I2C or SPI driven digital GPIO chip, because that'll be cheaper, right" and ehhmmm no
it's much much cheaper to add an *entire processor*. yeah i guess the atsam is sensible if it's the same one as in the duet.
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Re: PanelDue (touch-screen controller for Ormerod) availability May 04, 2016 01:17PM |
I have just noticed that the latest screen shots or PanelDue in this thread are rather old. Here is a set of four up-to-date ones, including the on-screen keyboard.
These show the 7 inch screen. 5 inch and 4.3 inch screens are also supported. Up to 5 heaters can be displayed using the 4.3 inch screen, or 7 using the 5 or 7 inch screen
Edited 1 time(s). Last edit at 05/04/2016 01:23PM by dc42.
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].
These show the 7 inch screen. 5 inch and 4.3 inch screens are also supported. Up to 5 heaters can be displayed using the 4.3 inch screen, or 7 using the 5 or 7 inch screen
Edited 1 time(s). Last edit at 05/04/2016 01:23PM by dc42.
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: PanelDue (touch-screen controller for Ormerod) availability June 07, 2016 01:07PM |
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dc42
FYI I have never had to pay UK import VAT when buying these displays one-off from China.
I ordered a 7" screen from the link on your page a few weeks ago. It came in less than 2 weeks and like you nothing payable on receipt. The cost is way below import duty charges but I was expecting VAT. Must be something to do with the gift box ticked on the transport label.
You pay VAT on goods over £15 and on gifts over £34. There is no customs duty on anything less than £135.[www.gov.uk]
Edited 2 time(s). Last edit at 06/07/2016 01:14PM by trevmas.
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