Make a donation to feanor-anglinRS485 Module Family
This module (shield) is designed for installation on electrical switchboard. It features 4 electromagnetic relays to control almost any household electric device: lights, roller shutters, electrical sockets. It also uses 4 analog current sensors to provide independent measurement for every output. It is case compatible with Raspberry Pi (at least bottom part of the case fits). Revision 2 also features full optoinsulation with a possibility to power electromagnetic coils from separate power source.
To use this module you need a RS485 MCU Module.
Technical Specification:
- 4x SPDT electromagnetic relay (G5Q-1-EU 12VDC),
- 4x ACS712-20A analog current sensor,
- 4 channel optocoupler for optoinsulation,
- 5V power regulator to power up the logic,
- 12-pin interface for RS485 MCU Module,
- 5-pin interface to connect external LEDs,
- 12x screw terminal for relays,
- 4x screw terminal for RS485 connection (12V, GND, A, B),
- 2x screw terminal for additional power source for full optoinsulation,
- 2-pole dip switch to choose desired power source for electromagnetic coils (single or separate power source),
- Maximum power consumption (including RS485 MCU Module) ~2 W,
- Size of Raspberry Pi (85x56 mm).
Performance
- AC contact rating: 10A/250VAC
- DC contact rating: 5A/30VDC
Be careful with this module! It operates with 230 VAC and can be dangerous when handled inappropriately!
Q&A
We will place typical questions and answers here, if they occur.
Firmware
See RS485 MCU Module page for firmware.
Notes
Case .stl files are available in design files section.
Revisions
Rev. 2
- Full optoinsulation including a possibility to connect separate power source for electromagnetic coils,
- Dedicated pin header to connect external LEDs,
- More elegant design, many minor changes.
Rev. 1
- Tested and working.
Other information
Copyright feanor-anglin (2018). Released under the CERN Open Hardware Licence v1.2
We develop Arduino compatibile hardware for wired home automation systems. If you like what we do and want us to keep going, please donate!
| Qty | Value | Device | Package | Parts | Description | MF | MPN |
|---|---|---|---|---|---|---|---|
| 1 | 1X5 | PINHD-1X5 | 1X05 | JP2 | Pin Header 2,54 mm | ||
| 1 | 1X2 | SW_DIP-2 | EDG-02 | SW1 | Dip Switch | ||
| 3 | 1X2 | W237-102TB3,5 | TB-3.5 | X2, X6, X7 | Screw terminal 3,5 mm | ||
| 4 | 1X3 | W237-103 | W237-103 | X1, X3, X4, X5 | Screw terminal 5 mm | ||
| 1 | 100n | C-EUC0603 | C0603 | C11 | Capacitor | ||
| 1 | 10u | CPOL-EUE2.5-6 | E2,5-6 | C9 | Polarized Capacitor | ||
| 1 | 10u | CPOL-EUE2.5-7 | E2,5-7 | C10 | Polarized Capacitor | ||
| 4 | 1N4148 | D'1N4148-SMD' | LL-34 | D1, D2, D3, D4 | Diode | ||
| 2 | 1X6 | 1X6 | 1X6 | X8, X9 | Male Pin Header 2.0 mm | Connfly | DS1025-01-1*40 |
| 8 | 1k | R-EU_R0603 | R0603 | R1, R2, R3, R8, R9, R10, R11, R12 | Resistor | ||
| 4 | 1n | C-EUC0603 | C0603 | C2, C4, C6, C8 | Capacitor | ||
| 4 | 47k | R-EU_R0603 | R0603 | R4, R5, R6, R7 | Resistor | ||
| 4 | ACS712 | ACS712-LC | SOIC8 | IC1, IC2, IC3, IC4 | Analog current sensor | Allegro Microsystems | ACS712ELCTR-05B-T |
| 1 | AMS1117 5.0V | REG1117 | SOT223 | IC6 | Low Dropout Regulator | ST Microelectronics | LD1117S50C |
| 4 | G5Q-1-DC12 | G5Q-1-DC12 | RELAY_G5Q-1-DC12 | K1, K2, K3, K4 | Electromagnetic Relay, SPDT | Omron | G5Q-1-DC12 |
| 1 | TLP283-4 | TLP283-4 | MINI-FLAT-16 | OK1 | Photo-Transistor | Toshiba | TLP292-4(E(T |
| Name | Size | # Downloads |
|---|---|---|
| RS485 4RelayDIN v1.1.pdf | 37.61 kB | 472 |
| RS485 4RelayDIN v1.1.brd | 530.1 kB | 522 |
| RS485 4RelayDIN v1.1.sch | 861.42 kB | 569 |
| Case Bottom.stl | 435.82 kB | 424 |
| Case Top.stl | 125.86 kB | 410 |
| Case Clip.stl | 18.83 kB | 386 |
| CHANGES.txt | 0 B | 397 |
| cern_ohl_v_1_2_howto.pdf | 55.06 kB | 283 |
| COPYRIGHT.txt | 416 B | 352 |
| PRODUCT.txt | 110 B | 383 |