book collections email follower instructable user
Picture of Casio Pi Portable CCTV Monitor
20181002_133050.jpg
20181002_164635.jpg
20181020_195550.jpg

In this Instructable I'll show you how to convert an obsolete portable LCD TV into a low-cost and retro-cool display for a Raspberry Pi project. I'll take you through all the stages of making a handy CCTV monitor with a 1997 Casio EV-510 and a Raspberry Pi Zero W, but we'll also look at the many other possibilities!

The original TV circuit is untouched and the Pi is fixed neatly under the battery cover, playing a video stream from the local network, all powered from a USB power bank.

I love these pocket LCD TVs, especially as they're so cheap to pick up second hand, I remember paying £2 for this one. Since the analogue TV channels were switched off they're pretty much useless - unless you have one like this that has the all-important 3.5mm Audio/Video input, in which case you can easily give it a new lease of life with a Raspberry Pi.

It's a pretty straightforward build - you can see the project in action and follow the whole end-to-end process on the YouTube video at https://youtu.be/SLkvcTYdm-A , there are also links in each Instructable step to the relevant parts of the video.

Step 1: Proof of Concept

Picture of Proof of Concept
20180919_200531.jpg

Before doing any dismantling I wanted to test the setup to make sure this old TV would work with the Pi. I set a video stream running on the Pi Zero using omxplayer (more on coding this later) then experimented with different cable combinations to connect the jumpers of the analogue video output of the Pi to the 3.5mm Audio/Video input of the TV. This took some trial and error to get a clear picture (if you have a very bad picture it's likely the wiring of the cable!) but I ended up with a clear view from the local IP camera.

I also tested powering both the Pi and the TV simultaneously from the same USB source and thankfully this worked - I planned to use a USB power bank so needed to use a single power cable for both.

Having convinced myself that it would work I moved on to more fiddly matters - dismantling the TV.

iornman1 month ago
Hi really loved this tutorial and made my own version ,
but for some reason i could not get mine to run off
the GPIO pins and made space for a pi mains adaptor,
also i found out by soldering the other end of the jumper wire to the back
of 3.5mm jack did away for the jack hanging out of the case and lead for a more elegant
look,great info,nice project!
IMG_0380.PNGIMG_0344.JPG
iornman iornman1 month ago
Thank you, love your projects by the way !
MisterM (author)  iornman1 month ago
Hey that's great! Good call on the 3.5mm soldering, I was never 100% happy with that thing sticking out but didn't want to risk inflicting my soldering on the original board and killing it. Power supply looks good too, really neat - I love that it's the same model!
Gongal664 months ago
What a awesome project!! I really liked the idea, if i find a handheld tv like this i will give it a try
JamesA4110 months ago
Awesome design and instructable. I'm not familiar with the Pi's. Looks like the Pi can be used to find wireless cameras also with the correct software to scan camera IP's. Are you aware of any software that has this function? Would be neat to make this into a technical surveillance video camera sweep tool.
MisterM (author)  JamesA4110 months ago
Not sure on the software but it must be possible to scan for network cameras, tinycam pro on my phone does it, that'd be cool. Also your comment made me think a thermal imaging camera on there would be very cool, maybe when the prices come down a bit!
LlewellynD110 months ago
Fan-tastic! Grrreat work...
MisterM (author)  LlewellynD110 months ago
Thanks!