ESP micro PLC the size of a post stamp.
The uPLC-digital version is an ESP-32-C3 wifi, bluetooth module for communication and MCU, it has a 3.8-24V buck regulator, has three 2.5-25V inputs, three 2.5-25v, 100ma high speed open drain outputs through a TBD062003 DMOS transistor array ic. And one protected 3.3v GPIO for onwire communication (Eg for DS18b20 sensors). The digital version allso has input voltage monitoring for battery applications.
The HO HI ports can be configured to be inputs or outputs by jumping solder bridges one each side of the IC. By default 1-3 are outputs and 4-6 are inputs.
| Parameter | Description |
|---|---|
| Input voltage | 3.8-24v |
| Current | TBD Wifi: ##mA, Radio Off: ##mA, Deep sleep ##uA |
| Communication | 2.4ghz WIFI, Uart TTL |
| Baudrate | 115200 |
| PCB size | 21x31.4mm |
| PCB info | 1.6mm FR4, HASL lead free, 4 layer |
| Case size | XxXxXmm TBD |
TODO
| Label | GPIO | Description |
|---|---|---|
| 3V3 | 3V3 | 3.3v output for sensor connection |
| ONE-W | GPIO18 | Protected gpio for onewire comm |
| GND | GND | GND port for sensor connection |
| GND | GND | GND port for sensor connection |
| HO-06 | GPIO10 | 25v 100ma open drain output |
| HO-05 | GPIO19 | 25v 100ma open drain output |
| HO-04 | GPIO3 | 25v 100ma open drain output |
| HI-03 | GPIO7 | 2.5-25v input (with pulldown) |
| HI-02 | GPIO6 | 2.5-25v input (with pulldown) |
| HI-01 | GPIO5 | 2.5-25v input (with pulldown) |
| GND | GND | Ground |
| 4-24V | Buck reg | 3.8-24v polarity protected input |
TODO