Support board "modbus_relay8" #40
Description
A MODBUS board with the name "modbus_relay8 v1.2" arrived a few days ago:
It has an STM8S103K3T6C, an LM2596-5V switching power supply (7..30V, 2-3A), 8 relays and 8 insulated inputs. The usual price is at $15.
I made a Gist with Forth code for I/O based on SWIMCOM. GPIOs for I/O are documented in the code.
Other GPIOs traced so far are:
| GPIO | usage |
|---|---|
| PA1 | Q (crystal not populated) |
| PA2 | Q (crystal not populated) |
| PB6 | S2 (key) |
| PB7 | LED (not populated) |
| PD7 | RS485 direction |