Robot Voice Modulator
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To here some crazy robot and pitch shifting action check out the file posted below.
Downloads
Go Get Stuff
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You will need:
- A clock body
- An adjustable arm desk lamp
- A HT8950 voice modulator
- A PCB
- An 18-pin socket
- 4 SPST buttons
- Electret mic
- Parts for the circuit (see next step for details)
- Wire
- 2 1/8" audio jacks
- A power source
- Misc hardware
(Note that some of the links on this page are affiliate links. This does not change the cost of the item for you. I reinvest whatever proceeds I receive into making new projects. If you would like any suggestions for alternative suppliers, please let me know.)
The Circuit
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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.
Get Bendy Arm
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Don't remove the lamp wire from inside the arm. You will need this to hook up your microphone. Therefore, don't trim it too close.
Leave the mounting bracket still attached at the bottom of the arm.
Bracket Stencil
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If you happen to have an awesome Epilog laser cutter like we do at Instructables than you can use that to cut out the pattern onto a piece of tape. If you don't, an Exacto knife will do.
Place this pattern onto what you feel will be the back edge of the robot voice machine.
Drill out all of the holes with a power drill.
Downloads
Control Panel
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If you don't have an awesome Epilog laser cutter than you can get the same effect with a jigsaw and a power drill with appropriate size bits.
Place the plastic clock face upside down inside the clock body and then rest the yellow piece snugly on top of it.
Downloads
Buttons
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Mount the Bracket
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Microphone
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Drill Some More Holes
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Plugs
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Mount the Circuit
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Continue passing them through the clock body until they are out the back of the case. Twist them together to tie the board in place.
Glue
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Wire It Up
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Wire up the switch to toggle between the audio in jack and the microphone.
Wire the power to the power wires and the audio out out jack to the audio out wires.
Plug and Play
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Turn it on and let your owl rock out on the dance (apartment) floor intergalactic robot-styly.
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