Minibeamer

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Minibeamer
NoPicture.png
Participants Dennis
Skills soldering, Arduino, Optics
Status Dormant
Niche Electronics
Purpose Fun
Tool No
Location
Cost
Tool category

Minibeamer Property "Tool Image" (as page type) with input value "File:{{{Picture}}}" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process. {{{Picture}}} {{#if:No | [[Tool Owner::User:The_Niz | }} {{#if:No | [[Tool Cost::{{{Cost}}} | }}

Introduction

With some lenses, a small LCD or TFT screen, a bright LED and some driving electronics it should be viable to build a device capable of projecting stuff on your wall. Note: The dutch pseudo-anglicism "beamer" means video projector.

2.2" TFT

insctructable for the screen I have. This screen died :(

Old stuff for Nokia display

The one I've got is a 'type 2'.

  • Connecting the display to a Raspberry Pi: [1]

Cabling

I could'n find a male DB25 connector so I checked whether a cable I had lying around would be useful.

Male-male DB25 (LapLink Cable?)

PCPARPORT OTHEREND
PIN2=D0 PIN15
PIN3=D1 PIN13
PIN4=D2 PIN12
PIN7=D5 NC
PIN9=D7 NC

Since PIN7 is not connected this isn't going to work :(

Parallel floppy cable

Next candidate was a short cable normally used to connect the floppy drive of an Olivetti Echos Pentium 1 laptop. Again: some pins that I needed weren't connected.

Parallel printer cable

This one looks promising according to http://www.lammertbies.nl/comm/cable/parallel.html I don't own the connector that fits the 36 pins Centronics connector so I'll cut up the cable and connect the wires directly to the resistors.