About this project
Purchases After Kickstarter
We will make PiScreen available for back order on www.tindie.com.
If you are to purchase from tindie.com, your order will be placed on back order and your credit card will not be charged. You will be notified when PiScreen will be available which is near the end of may.
Assembled PiScreen; https://www.tindie.com/
Kit PiScreen; https://www.tindie.com/
It is our priority to fulfill our Kickstarter backers before we do anything thing else.
Instructions and Support
All instructions and support for PiScreen can be found at;
PiScreen is designed to give everyone the opportunity of adding a small 3.5" TFT (480x320) display with touchscreen control to their Raspberry Pi.
PiScreen includes a 3.5" TFT with touchscreen control, PCB and components needed to add this display to a Raspberry Pi.
Once assembled (or you can receive one pre-assembled), PiScreen connects right on top of the Raspberry Pi GPIO pins or via a ribbon cable. 9 GPIO pins are unused and made available elsewhere on
We have done research on a number of different LCD panels and the two manufactures we have selected are the best quality we have seen so far.
Specifications of the these panels are;
Touch Screen Resistive
Display construction 480 * 320 DOTS
LCD Controller ILI9481
Touch Screen Controller XPT2046
Display Color Multicolor, 65536 colors
### UPDATE 19th March###
All rewards from $55 and above will now receive a stylus with their reward, hopefully we can include a spare as well. We have yet to find the exact model, but we do know what we need. Small and slim with a hard point. Similar to what is used for the Nintendo 3ds or the model used for the old Palm Pilot. A stylus isn’t really needed, but it can help with some of the small buttons on the screen within X. And sometimes it is easier to draw with a stylus rather than your finger.
$22,000 - Surface-Mount Technology (SMT) for the pre-assembled PiScreens.
(PiScreens that come as a kit will stay as they are, through hole). SMT will allow for a smarter looking product and allow for better airflow and it will assist with the manfacture process for the PCB.
$25,000 - PiScreen Case A laser cut case designed for PiScreen + Raspberry Pi. At this stage we are not sure how a case would affect postage or if a pledge increase is required. E.g $5. More details as we get closer to the goal
There are a large number of different TFT models available.
All come in different sizes and different controllers. Some require extra components and others do not. If this is all new to you, there is a very steep learning curve with getting these up and running.
For some of use, this can be a bit overwhelming. The aim of this Kickstarter is to remove of this complexity and make a small touchscreen available to all.
PiScreen is also very handy for users that run their Raspberry Pi headless (No monitor). You can easily shutdown the power without having to log in.
We have done some extensive work with different types of displays on the Raspberry PI and I also assist others, a lot of it can bee seen here www.marks-space.com.
There are others out there also helping, Notro and Texy ( www.raspberrypi.org). And thanks to Notro for his work on FBTFT, where he has made drivers available for multiple TFT screens.
A number of prototypes were created before we came up with the final product.
In order to get PiScreen in the hands of Raspberry Pi users at a reasonable price, 100+ boards need to be produced.
The above image shows the very first prototype. Using a breadboard was not a good idea as the breadboard generated a lot of noise and wires would always become loose
We will also have some tutorials on what can be done with PiScreen, most will be outside of the box and what you normally wouldn't use a LCD for, some of these are already available at www.marks-space.com
- Virtual buttons to control the GPIO of the Pi
- Kiosk style windows system
- How to use a more streamlined windows manager designed for embedded devices
- Write you own programs
- PiScreen and Raspberry Pi Camera module
- Use PiScreen for MAME.
Here is the current version of the PCB, which will be black with white printing.
- Launch Kickstarter Campaign
- End Kickstarter campaign
- Procure a small batch of PCBs (10) to confirm quality
We will use current supplier whom is based in Hong Kong and which we have already had good experience with, this includes quality and turn around.
- Procure a small batch of TFTs and components to confirm quality and functionality.
- Assemble the first batch of PiScreens and perform necessary testing.
- Procure final hardware
- Package PiScreen kits.
- Assemble the required amount of PiScreen
- Fulfillment to backers
Instructions and Support
All instructions and support for PiScreen can be found at www.OzzMaker.com.
Risks and challenges
For this project, we think the risk we have is with the sourcing the displays, which are sourced from Hong Kong. To mitigate this risk, we have prototyped two displays from different vendors.
There is also the risk of delivery delays due to hardware manufacture delays. I have mitigated this by including some padding in the delivery dates. I have also sourced components from multiple suppliers within our local cityLearn about accountability on Kickstarter
The remaining I/O pins are presented somewhere else on the PCB. You can see an example of this 1:12 into the project video
The drivers are opens source and we will provide clear instructions on how to download and install them.
We will also provide instructions with how to do some fun things with your PiScreen.
E.g. Display images, run Doom, play video, program for touch events, etc...
Currently, the only O/S PiScreen works at 100% is Raspbian.
There is a hack to get it working with RaspBMC, which is to copy the image from the normal display output (HDMI/RCA) to PiScreen. This makes the touch input unusable and shows video with poor quality .
We will share any updates we have of PiScreen working with other O/Ss.
Once the Kickstarter finishes, we want PiScreen to still be available for pre-order/purchase. We have yet to finalize where. We will share the details when we do.
yes, it sure does
Yes. When we send out the survey we will be asking whether you would like Through Hole or Surface Mounted components.
If no response is given, Through Hole will be sent.
Through Hole or Surface Mounted, this makes not difference to the Functionality of PiScreen.
Please bear in mind that some components will need to be through hole. E.g. headers
No battery or external power source needed. PiScreen gets it's power off the Raspberry Pi through the GPIO pins.
PiTFT has a resolution of 320x240.
PiScreen's resolution is 480x320.. so twice as much as PiTFT.
This is a big difference in screen real estate which is very noticeable and works for a much better user experience.
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