Sounds for droids 2020 - upgrade 1.4

After the last testing and the feedback created being a nightmare and the ground loop isolater circuit just wasn't doing anything. So rather then using standard speaker wires, as can be seen in the video in my last post, I cut down the leads from the RCA leads and swapped the standard cable over for these.

OTHER WORK
Since then I've been working on creating 3D printable enclosures to house all the pieces.
Sorting out the orientations of them so will post up once done.

.......3D printed parts for the utility arms have been done

by a work college and are now in the post to me.

Thanks Will.

Sounds for droids 2020 - upgrade 1.3

Saturday I got round to playing with the sound board & set everything up to test out the new amp.

Rewind a week to the issues I had trying to upload the sounds to the board. I had just grabbed a usb cable I thought I had used before to connect the board to the laptop, but it wouldn’t connect???
After numerous attempts and system checks, I realised the cable was a power one not a power/signal one. Swapped cables and instantly problems solved lol.

After testing the sounds using my phone, i needed to actually test with the sound board. So after some wire soldering/connections, the board, amp, speakers where connected. I had ordered a potentiometer as a volume control, but it still hasn’t come, so I dug out a broken large servo and used the pot out of it. Quick YouTube/internet search, and it was soldered up according.

This might look like a mess lol, but it was only for the purpose of taking the pic.
I opened up the ground loop unit to be able to connect up the speaker wires.
The amp uses 12 Volts, but the sound board runs 3-5 Volts, so has a mini voltage regulator [just seen in picture above it],

The sound output was great! And even more so, when I adjusted the 'volume' via the potentiometer, so much so that the wife told me to turn it down! :D

Here's a short video clip of the sound test, via my You Tube channel.

This new amp was originally going to be used as a separate sound unit for in R5's dome, but I think I might keep it for his main sound setup and get another [possibly] for the bad motivator dome setup.

Here's a size comparison between the two amps:

New amp on the left [small], original amp on the right [large].

The new amp cost about £5 inc P&P, compared to the SURE amp, which cost about £20+

Tuesday 28th and the potentiometer arrived in the post...

R5-D4's Sound system installation - UPDATE

I've cut down the perspex sheet to a more manageable size, though it's still to be test fitted inside R5's body. Cleaned up the cut edges with belt sander, nice and smooth.

Next was to fit the digital volt meters. I wanted to save space, so I milled holes into a 'stand off' piece of perspex and fitted it above/next to the voltage regulators.

The wires I had previously prepared......had the heat shrink & sleeve's removed. As it was to restrictive on the bends. I was also not happy with my attempt on the 'negative' wires for the 12 channel remote, so this was redone (in blue wire). I then fitted a single earth connection bolt with eyelets.

I then drilled location holes in the perspex speaker board. This will be mounted, stand off style onto the rear of the sound board. The ground loop isolator unit is also fixed to the lower half section of it.

Fan's spinning, digital volt meters reading

Plugged my 12v adaptor in and powered up sound board. All lite up!! Though at first I was worried the light on the 12 channel unit wasn't working......looking closer I realised it wasn't an led but a diod lol, I then pressed the bind button and it buzzed!

Next is to load up the audio and program the remote

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