Following on from Atari Punx…, a sequencer is a very useful piece of additional kit. One can be easily made using a 4017 decade counter.
A friend of mine, Pavel, from the group Bang Sue Electrix, told me about the Atari Punk Sound generator. I’d never heard of it before, and I initially thought that he wanted to re-create either an old Atari VCS games console, or Atari 800 PC. When he showed me the Wikipedia – Atari Punk Console page, I realised that he was actually referring to a Stepped Tone Generator, formed from an astable square wave oscillator driving a monostable oscillator, (or – if you prefer – an astable multivibrator circuit triggering a monostable multivibrator circuit) which uses two 555 timers (or a single 556 timer IC)…
Reminiscent of vintage Atari video games, the synthesizer’s output is a characteristic Forrest Mims, a popular electronics author, published the original Atari Punk Console schematic for a “Sound Synthesizer” in Engineer’s Notebook: Integrated Circuit Applications and then a “Stepped Tone Generator” in Engineer’s Mini-Notebook: 555 Circuits. Kaustic Machines took the circuit and popularized their version as the “Atari Punk Console”.
This article also takes a look at some unrelated 4069 musical projects…
I got an i-Box (v1) based robot for 100 baht. This robot is a PIC16C715 based device, with a dual motor driver, EEPROM serial memory and a comms IC, all mounted on a PCD a couple of inches square.
It has a number of variants, and brand names, such as:
These are essentially the same device.
It is quite difficult to locate any online information about the i-Box v.1, per se. Information on the i-Box III can be found online however,
A friend gave me the remaining parts of his mountain bike, after some thieves had taken what they had wanted. These parts included:
Some miscellaneous parts (front and rear derailleurs, side stand, seat post mounts, etc.):
The Bottom Bracket
Here is a photo of all of the parts, including the frame, and rear shock.
I then proceeded to gather the missing parts that were needed and rebuild it.
Continue reading Putting together a MTB from parts