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wiki:tcb:tcbinstall:io_ports_ab [2021/03/19 19:29] opadmin [Using an I/O Port as Output] |
wiki:tcb:tcbinstall:io_ports_ab [2021/03/20 01:14] opadmin [Using an I/O Port as Output] |
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If you wish to connect the output to another microcontroller (such as another Arduino) you can do so directly - just connect the signal pin of the I/O port to the input pin of your other controller, and also make sure both the TCB and the other controller share a ground connection. | If you wish to connect the output to another microcontroller (such as another Arduino) you can do so directly - just connect the signal pin of the I/O port to the input pin of your other controller, and also make sure both the TCB and the other controller share a ground connection. | ||
- | However keep in mind these outputs are only rated at 40mA each. That means they will almost surely be inadequate | + | Each output can supply up to 40mA of current at 5 volts on the signal pin. Standard LEDs typically draw around 20mA each with the appropriate current limiting resistor, therefore you could power up to 2 LEDs on a single port (use something like [[http:// |
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+ | For anything | ||
There are also various logic-level modules available on eBay that can interface directly with the TCB using a male-to-male servo cable. But be careful when choosing them, because many use a different pinout than the TCB! They can still be used, but you will need to swap the pins on your servo cable. The order on the TCB is Ground/ | There are also various logic-level modules available on eBay that can interface directly with the TCB using a male-to-male servo cable. But be careful when choosing them, because many use a different pinout than the TCB! They can still be used, but you will need to swap the pins on your servo cable. The order on the TCB is Ground/ |