Yesterday I soldered the Atari Punk Console that I had built on a breadboard previously onto perf board. I used the Adafruit Perma-Proto (half-size) which is very convenient because of the breadboard lay-out of this perf. Then I made a classic mistake. Having little time I tried to solder the components onto the board as […]
Author: Eric Buijs
I’m an #privacy, #opensource, #opendata and #openstandards advocate. I’m holding a grudge against Big Tech, big IP holders and authoritharian governments. Furthermore I’m a #3Ddesigner, #3Dprinter, #webdesigner and overall #DIY guy.
Before entering experiment 19 of Make: Electronics and the ‘realm of pure digital electronics’ I decided to do an analog project first. I want to make a Stepped Tone Generator aka Atari Punk Console. This piece of electronic is a very basic synthesizer, probably the simplest that one can create. The circuit was first published […]
I (almost) finished the reaction timer today. That means that the delay is build in. This was done by adding yet another 555 timer now in monostable mode. It is triggered with a tactile switch connected to pin 2 of the timer (see pg. 178 of Make:Electronics). During testing of the circuit the LED switched […]
Previously I added 555 timer in astable mode to generate pulses for the counter chips. In the next step a second 555 chip is added. This timer runs in bistable mode (see pg. 176 of Make:Electronics). The purpose of this timer is to freeze the counting when the tactile switch is pressed (figure 4-40 of […]
The next step in Experiment 18 of Make:Electronics is the addition of a 555 timer in astable mode to the circuit (pg. 175 of the book). This addition drives the decade counter therefore the tactile switch that was connected to pin 1 of the first decade counter from the previous part of the experiment had […]
Last Friday I’ve built the circuit as displayed in figure 4-37 (pg. 174) of the book Make:Electronics. The circuit consists of (in my case) three Kingbright 7 segmented digits. Each digit was connected to a 4026 decade counter. The decade counters are coupled by connecting the output of pin 5 (carry) to the clock input […]
With the arrival of the Kingbright numeric LED with the correct width (see my earlier post) I was able to continue experiment 18 of the book Make:Electronics (pg. 170). In this experiment the reader will eventually build a reaction timer using the 555 timer chip and 4026 decade counter. The layout of my numeric LED […]
This week my wife completed a couple of cushions for our DIY bar stools made of scaffolding wood . At the local market she bought fabric and foam. The fabric is of firm upholstery quality in an apple green color. This matches the color of the wood. The foam was already cut at the right […]
I wanted to continue with experiment 18 of the book Make:Electronics today but discovered that the Kingbright numeral LED’s that I received were the wrong type after all. The width of the component is to small to fit in the breadboard (it is 2/10 inch instead of 3/10 inch). I ordered the 3/10 numeral LED’s […]
A small update. Saturday I received the rest of the components that I need for the Reaction Timer (Experiment 18 of Make:Electronics) and the rest of chapter 4. I couldn’t get all the components on the shopping list (see pg. 147) from my online supplier so I had to choose some alternative components. Notably the […]