# POV tech brainstorming

# Linearpov

[Datenblatt](https://www.dold-mechatronik.de/documents/Datenblaetter/Linearfuehrungen/Datenblatt-Miniaturlinearfuehrung-MR.pdf?utm_source=webshop&utm_medium=pdf&utm_content=miniaturlinearfuehrung-mr&utm_campaign=datenblatt-download)

[Linearführung MR 12 MK, Stahl - 2m Stab in Walzwerklänge](https://www.dold-mechatronik.de/Linearfuehrung-MR-12-MK-Stahl-2m-Stab-in-Walzwerklaenge)
[MR 12ML](https://www.dold-mechatronik.de/Linearwagen-MR12-ML-Optionen-waehlbar)

[Gesamtsystem für CAD](https://www.dold-mechatronik.de/Linearwagen-MR-12-ML-ZZ-Blockmodell-inkl-Schmiersystem)

# Teensy

Video from SD
https://forum.pjrc.com/printthread.php?t=36751&pp=25&page=1
https://github.com/FrankBoesing/ILI9341_t3DMA

# RasPi

## Spi

multiple SPI ports
https://raspberrypi.stackexchange.com/questions/107357/enable-up-to-5-spi-on-raspberry-pi-4

clock rates
https://raspberrypi.stackexchange.com/questions/699/what-spi-frequencies-does-raspberry-pi-support

# Leds

## APA102

15Mhz max data input rate

http://neon-world.com/en/product.php

## HD108 Led

https://www.hd108-led.com/

[HD108 2020 datasheet](https://www.hd108-led.com/product/2020-hd108-rgb-pixel-led-chip/)

[HD108 5050 144leds/m 7mm pitch](https://www.hd108-led.com/product/144pixels-hd108-led-strip/)

[HD107s](https://www.rose-lighting.com/products/hd107s-16bit-rgb-pixel-led-chip-5050/)

FRAMERATE PROTOTYP

full rotation pov resolution: 360x128 pixel
pov uses 2 strips per frame
strip pov resolution: 180x128
pixel refresh rate: 3600.00Hz
max pixel refresh rate: 3605.77Hz @ 15Mbps
motor rpm: 1800.00 @ 20fps
pov rpm: 600.00 @ 20fps
ideal radius: 401.07mm

## Code Prototyping

### TFT DMA ESP32 128 Pixels
one row : 123 microseconds
all rows: 22169 microseconds (~22ms)