Darth Vader voice changer 2.0 part 5: finished

This is the last of a series of five where I design and build a Darth Vader chest box with the HT8950A chip. The series involves all the instructions for the electronics, laser cutting and a bit of 3d printing.

Darth Vader voice changer 2.0 part 4: almost finished

This is the fourth of a series of five where I design and build a Darth Vader chest box with the HT8950A chip. The series involves all the instructions for the electronics, laser cutting and a bit of 3d printing.

Darth Vader voice changer 2.0 part 3: amplifying and case revisited

This is the third of a series of five where I design and build a Darth Vader chest box with the HT8950A chip. The series involves all the instructions for the electronics, laser cutting and a bit of 3d printing.

Darth Vader voice changer 2.0 part 2: designing the case

This is the second of a series of five where I design and build a Darth Vader chest box with the HT8950A chip. The series involves all the instructions for the electronics, laser cutting and a bit of 3d printing.

Darth Vader voice changer 2.0 part 1: the HT8950A chip

This is the first of a series of five where I design and build a Darth Vader chest box with the HT8950A chip. The series involves all the instructions for the electronics, laser cutting and a bit of 3d printing.

Building a robot cart (Experiment 32 of Make:Electronics) finished

In my previous post about the robot cart I described how I finished the cart and tested the circuit on the breadboard. I only had to solder the circuit to the perf board and mount the board on the cart. Simple, right. Unfortunately it wasn’t that simple. After soldering I tested the board and discovered […]

Building a robot cart (Experiment 32 of Make:Electronics)

This experiment is about building a little robot cart. Make:Electronics describes all the steps that needs to be taken in great detail beginning with the cart and then the circuit. This experiment is a lot of work but I think it is worth it because you make a complete robot from the bottom up. The cart […]

Breadboard malfunction (redo experiment 29 and 30 of Make:Electronics)

During experiment 29 and 30 of Make:Electronics I noticed that the circuit was very susceptible to noise to the point that it really interfered with the experiments. While thinking about it I suspected that something was wrong with the breadboard. I decided to redo both experiments with a another breadboard (but without the low pass […]

Fuzz: experiment 30 of Make:Electronics

After some refurbishing around the house I’m finally back with Make:Electronics. In experiment 30 I used most of the circuitry from experiment 29. The idea is to create a distorted sound. The base of an NPN transitor receives the output from the 555 timer thus controlling the base of another NPN transistor (see fig 5-55 […]

Audio filtering, experiment 29 of Make: Electronics part 4 (finished)

I finally reached the second stage of Experiment 29 of Make: Electronics. In the first stage I used an audio amplifier (TEA2025B) and a coil to create a crossover network. During this first stage the source of the audio was an iPod (read here). In the second stage the iPod was replaced by a 555 […]