Audio	Video
Computer	Light Effects & Controllers
Data Communications	Power Supplies
Telephone	Misc Circuits
Measuring Equipments
These circuits are designed by Tomi Engdahl. Neither ELH Communications nor Author take any responsibility.
More circuits information have been added to the site lately and can be found in below pages.
Schematics	Digi Pack
DMX PC Keyboard Interface	PC Based DMX512 Lighting Desk
PIC16F84A Discolight Effect with bass beat control	DMX 512 Printerport Interface