LEAP#279 Single-stage FM Transmitter Kit #2
I picked up another FM transmitter kit because it was too cheap to ignore.
Initially transmitting slightly high on the FM band, some adjustments of the LC tank
got it down to working quite decently around 92MHz.
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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LEAP#278 Component Tester Kit
Component testers are very handy things to have around.
They are also interesting bits of kit to design and build, as you get to play around in the fascinating niche of test equipment and techniques.
I was interested in testing out this particular Atmega328-based kit, as it is representative of a whole class of simialr products
that all trace their history back to original open source work by the folks on www.mikrocontroller.net.
It took a few hours to construct, and fired up perfectly. I have built similar circuits myself, but nothing yet with the complete feature list this kit offers.
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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LEAP#277 Boldport Touchy
Touchy is a capacitive-touch input device with on-board Sleepy Bee microcontroller (Boldport Club Project #7).
No disappointments here - another beautiful board to add to my growing collection of club projects,
and a little challenge to hand-solder the EFM8SB1 processor with its insane QSOP 0.625mm pin pitch!
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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LEAP#276 Variable Frequency Runway LEDs
The idea for this circuit came from a desire to have an LED effects loop that could be triggered by a microcontroller
without burning cycles to keep the effect going.
There are many ways to achieve this, but the approach I’ve take was influenced by recent experience with the LM331
when building the BoldportClub Pease.
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
Here’s a quick video of the effect running on a breadboard:
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