Instructables

LED scrolling marquee sign

LED scrolling marquee sign

LED555 writes – “The project is an LED sign. The LED sign is a sign made up of 512 individual LEDs, which has RS-232 communication capabilities used for programming user defined messages. The brain is a PICmicro 16F786 microcontroller, programmed in PICBasic. Everything in this project is either hand made or special order made. The […]

Mobile repeater and mesh node

Mobile repeater and mesh node

Mattw writes – “What happens when the grid breaks? Communications need to be restored. After Hurricane Katrina hit, BellSouth announced that it would take 3 months to restore phone lines. Volunteers using WiFi gear were able to connect churches and community centers within the first weeks and within three days of setting up an asterisk […]