WindowMaker
In Memoriam
I know there are several people involved in the Hydra project on here. I have a few questions about the use of the MCP23008 to serial control a bundle of relays.
I have 8 of the opto relays from Futurlec that run fantastically on my mega. The problem is that They use up a lot of pins, and will be even more annoying when the relays are placed into their own external power bar. I would like to use either cat5 or db9 to send signal to the relays but that obviously wont work if I need to use 10 pins.
using an i2c controller like the MCP is a great idea! but I dont have much knowledge on i2c or how it is connected. The power bar page on the hydra site provided some insight but didnt go into where the .1uf cap is to be used or what reference the address pins will have depending on how they are connected.
Any insight here is greatly appreciated!
I have 8 of the opto relays from Futurlec that run fantastically on my mega. The problem is that They use up a lot of pins, and will be even more annoying when the relays are placed into their own external power bar. I would like to use either cat5 or db9 to send signal to the relays but that obviously wont work if I need to use 10 pins.
using an i2c controller like the MCP is a great idea! but I dont have much knowledge on i2c or how it is connected. The power bar page on the hydra site provided some insight but didnt go into where the .1uf cap is to be used or what reference the address pins will have depending on how they are connected.
Any insight here is greatly appreciated!