LEAP#425 Look Inside a 7-segment with the Boldport 3x7
A lovely PCB and classic Boldport instructions(!):
This project is a challenge to construct.
The Boldport 3x7 is essentially a 3-digit common-cathode 7-segment display, rendered with discrete components.
Since it’s a chance to look inside the workings of a 7-segment display unit, I decided to modify my build to flip the lid and expose the internal wiring for inspection. Now it’s built, more projects to follow!
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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LEAP#423 The Maker UNO
I was recently shown an Arduino-compatible board made by Cytron in Penang, Malaysia called the Maker UNO. I gather it began life as a very successful kickstarter that aimed to produce a better board and associated teaching materials for K-12 education.
It packs some nice additional features in the Uno form-factor:
- LEDs on all digital pins
- a piezo buzzer on pin 8
- a push-button on pin 2
Aside from looking pretty spiffy, a really nice feature is the price - currently listing for RM15 (~$3.60 USD)!
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
Here’s a quick demo sketch that exercises the LEDs, buzzer and push-button:
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LEAP#422 VL53L0X Laser Tape Measure
The VL53L0X is a very small Time-of-Flight (ToF) ranging sensor. It is quite widely available as a module, including from Adafruit - see their information page.
For this project I’m taking the module for a test drive and building a short-range tape measure with an Arduino and Nokia 5110 display.
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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LEAP#421 LimeSDR First Look
I think I first heard about LimeSDR-USB on The Amp Hour.
I was convinced to jump in and give it a go particularly because of the fully open-source nature of the platform - from hardware all the way to software, including FPGA code.
The unit is suited to research and development in a wide range of areas, but I suspect as I get more into this I will be mainly focused on areas such as test and measurement (e.g. spectrum analysis) and amateur radio.
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
There are some good video resource, a good place to start is: What is the LimeSDR?
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