Practical Electronics No 9 2024

Build Your Own Calibrated Microphones by Phil Prosser. This phantom-powered, balanced and calibrated microphone is ideal for measurement applications but is also great for recording work. You can choose from multiple different microphone capsules that can be calibrated to produce an almost flat response.
Modern PIC Programming Adaptor by Nicholas Vinen. Program most newer PIC microcontrollers out-of-circuit with this PIC Programming Adaptor. It works using a PICkit or SNAP programmer and suits 8- to 40-pin micros. With external adaptors, you program SMD chips in SOIC, SSOP or TSSOP packages.
Salad Bowl Speakers by Phil Prosser. These stylish speakers are surprisingly good performers considering they're made using salad bowls from IKEA. They are simple to build but they can handle SOW RMS per channel.
Using Electronic Modules - 1.3-inch monochrome OLEO by Jim Rowe. This 128x64 pixel, 1.3in (33mm) OLEO display module is perfect for driving with an Arduino or Micromite due to its wide availability, l 2 C interface and low cost.