Robot Voice Modulator

Step 2 The circuit

Breadboard the "HT8950 with a Transistor Output Stage and a 6V Power Supply" circuit found in the official data sheet minus the transistor output stage. Instead, wire that to an audio out jack.

Then solder the circuit onto a PCB, temporarily omitting things like the microphone, audio jacks and switches. This will be added later.

You can test to make sure the board works by adding extra hookup wires for the audio jacks and microphone and connecting them through a breadboard.

Comments

[youn_link]

Can you pass the diagram circuit?

[codyduncan]

 What's going on on that board?  I see an extra IC and what looks like a transistor.

I'm thinking your "they can figure it out" scheme may not be the best policy.  I am trying to build this right now, but I am trying to avoid building it and finding that it doesn't work without  this or that extra component.

If you did add extra parts (it looks as though you did) what were they for?

[Arnoldofingo]

you have a transistor; not listed in your 'to get' list... Wold be nice to know~

[randofo]

No I don't. Maybe you are looking at the 7805 voltage regulator.

[amplex]

i bought 3 off ebay for <$10 less than a year ago. ive had one sitting on a breadboard for 8 months and still havent put it on perfboard, even though this is a really cool bendable 8bit modulator =( maybe ill finally do it today

[sourcery]

Maybe you could download DIY Layout Creator http://www.synthdiy.com/show/?id=2489 and draw a nice circuit diagram for this circuit. It would be easier to follow instructions that way ;)

[randofo]

I normally include schematics, but didn't see much point in redrawing something that could be found on the data sheet. There are only a few minor changes which are easy to figure out (such as the SPDT toggle switch between the mic and audio in and the audio out jack instead of the amplifier stage).

[sourcery]

Ok, it was just a suggestion... I have started to use the program (DIY Layout Creator), and it is quite useful for experiment board projects :) Now I just need to find the HT8950 chip in Sweden :)

[Roland54]

If you look on the Internet, you can find the suppliers but there are also some alternatives mentioned like from Yamaha.