Found in an ancient American documentation, this circuit can generate signals up to 40 MHz for a Z80, microcontroller widely used at the time. The circuit must be powered with 5 V and also serves as a shield.
April 2017 - The kit for STMicroelectronics STM32F7 32-bit microcontrollers is available from...
Bike speedometer (CB20497E) This circuit can be powered by a solar cell. The circuit is from a...
The integrated circuit used in this project is not common today, but it can be implemented with more...