| The laser head kit presented in 2018 turned the Elektor Sand Clock of 2017 into a clock that writes the time on glow-in-the-dark film instea...
| The laser head kit presented in 2018 turned the Elektor Sand Clock of 2017 into a clock that writes the time on glow-in-the-dark film instea...
| The MCP4725 12-bit digital-to-analog converter from Microchip Technology costs only around $1. It has an I2C interface and can be operated w...