Hello, a long time ago,I have bought a touchscreen for a Raspberry Pi 3b but after that, I used this raspberry for a Lightberry box. Now, I want to incorporate this screen in my box (to show a digital clock and others informations in a dashboard for example). But, to plug this screen I need to connect several gpio pins including Mosi and Clock pins which is used by my led strip. Can I plug this two equipments only on one raspberry pi ?
Thanks to reply me
Add a TFT Touchscreen to a Raspberry with WS2801 leds
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You need to gate the SPI clock line with the 2 slave select pins.
A 74hct125 should work :
https://hyperion-project.org/t…pi-chip-select.279/page-2 -
Another thought - performance could be a problem at high update rates as there's only a single data line that is shared.
This might work :
http://raspberrypi.stackexchan…spi-interface-with-spidev
It is an entire second SPI interface with separate data lines -
use leds via arduino and your display via raspi, thats the easiest way to solve this
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Yes, it is really possible to manage the ledstrip with an arduino.
There are a variety of firmwares for traditional arduino boards at
https://github.com/hyperion-pr…r/assets/firmware/arduinoI have some firmware for esp8266 wifi arduinos too but that might be over complicating your use case.
I had some success with the second SPI device above. It doesn't work well with osmc and my ws2812b SPI device, but should work with ws2801 and apa102 devices.
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you need of course the raspi AND the arduino. the arduino is connected to raspi via usb. The work is done by the pi, the arduino is just a kind of "io extension". Then your pins on rpi a free and can be used for other things like the tft
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