Thanks so much to PCBWay who offered to assemble my first prototype batch of all three uPLC modules. They deliver awesome quality as always, see the result for yourself below.
I now have two prototypes of the uPLC-Relay so ESP-Home integrations will come soon.
ESP micro PLC the size of a post stamp. he uPLC-relay version has two small signal relay module utilizing an ESP-32-C3 wifi, bluetooth module for communication and MCU, it has a 0-24V buck regulator, has two 2.5-25V inputs, two 25v, 100/50ma high speed open drain output through a TBD062003 DMOS transistor array ic. And two relay outputs are capable of driving around 25V 500ma.
Thanks to u/PricelessToolkit/ESPClicker for inspiration.
| 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 | 22x31.1mm |
| PCB info | 1.6mm FR4, HASL lead free, 4 layer |
| Case size | XxXxXmm TBD |
| Label | GPIO | Description |
|---|---|---|
| R2NO | GPIO5 | Relay 1 Normally Open |
| R2CO | GPIO5 | Relay 1 COM |
| R2NC | GPIO5 | Relay 1 Normally Closed |
| R1NO | GPIO6 | Relay 1 Normally Open |
| R1CO | GPIO6 | Relay 1 COM |
| R1NC | GPIO6 | Relay 1 Normally Closed |
| HI2 | GPIO19 | 2.5-25v input |
| HI1 | GPIO18 | 2.5-25v input |
| HO2 | GPIO3 | 25v 50ma open drain output |
| HO1 | GPIO7 | 25v 100ma open drain output |
| 4-24V | 3V3 | 4-24v |
| GND | GND | Ground |
PCB assembly by PCBWay
TODO
TODO