LEAP#342 ESP8266 Morse Blinky
A quick test of the ESP8266 core for Arduino, which brings support for ESP8266 chip to the Arduino IDE.
That means being able to write C++ sketches for the ESP8266 as easy as developing for an Arduino.
Here I’m using the most basic ESP8266 board (an ESP-01) with a sketch that blinks Morse code on the built-in LED.
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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LEAP#341 USB Power Supply
I’ve taken apart and had enough “wall wart” power supplies blow up on me .. so perhaps it is about time to put one together instead!
Cheap kits are available, although it pays to carefully map out the circuit and understand how it functions, as schematics don’t always match PCB/silkscreen, and components may also vary! The kit I’ve built here works just fine..
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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LEAP#340 Boldport Club IxpandO
IxpandO is an input/output expansion board based on Microchip’s MCP23017, BoldportClub Project #16. The board design leaves the door open for various configurations. I decided to go initially with the default setup of 8 inputs (switches) and 8 outputs (LEDs), with an Arduino sketch to demonstrate digital output and interrupt-driven input. As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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LEAP#339 PT2399 Delay Kit
I have been reading up on the PT2399 echo audio processor, and a good way of seeing one action is to pick up one of the many delay effects pedals.
The kit I found is nicely put together with a pre-drilled and decorated 1590B enclosure, and some very nice knobs and smooth pots. The build was a breeze, and results are actually pretty decent. As always, all notes and schematics are in the Little Electronics & Arduino Projects repo on GitHub.
Here’s a quick hit to demo the effect, with a clean guitar signal and all the effect settings on “11” (mix, repeat, delay)…
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