Driving up to four independent RGB strips, this strip lighting driver includes a built-in strobe light and is motion-operated using a Wii Nunchuk controller. It can be controlled wired or wirelessly. by Brandon Speedie
This small, low-cost adaptor lets you program most newer PIC microcontrollers out-of-circuit. It works in conjunction with a PICkit or SNAP in-circuit programmer and provides five different modes to suit a range of chips from eight to 40 pins. It can even be used with SMD chips in SOIC, SSOP or TSSOP packages. by Nicholas Vinen
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While this article is primarily concerned with servicing a V6295-type vibrator, the general advice would apply to many mechanical vibrator units found in vintage radios and other contemporary equipment, mainly those with three sets of contacts. I will also present a straightforward Mosfet-based circuit that acts as a solid-state replacement for a vibrator. It even fits in an original-looking can! by Dr Hugo Holden
We have made some changes to our Universal Battery Charge Controller published in December 2019 so that it can be built using parts that are actually available. The changes are modest, and the total cost for parts has been reduced. by John Clarke