FP01 control board
- Dual MCU: Arduino UNO R4 compatible (Renesas RA4M1) + PSoC 4
- I²C EEPROM for settings (32 KB)
- 1.5-inch OLED module (128×128) and user buttons
- Connected to the main board by a 40-pin FFC; powered from the main board
LIGHTING CONTROL CORE / FP01 REV 2.1
Common control board
for lighting control FP01
FP01 is a common control board for lighting control, mounted on various main boards such as dimmers, relays, PWM dimming and DMX Master. Dual MCUs, an Arduino UNO R4 compatible RA4M1 and a PSoC 4, share communication and real-time control.
FP01 boardArduino sketchPSoC 4 driverCase (option)
- MCU
- RA4M1 + PSoC 4
- CIRCUITS
- ≤64 local
- BOARD (3D)
- — mm
LOADING 3D MODEL…
INTERACTIVE 3DFP01 Rev2.1
DRAG ROTATE · WHEEL ZOOM
01 — PACKAGE
The customer designs
only the main board
Communication, processing and dimming control are concentrated on FP01. SAIence supplies the FP01 board together with the software that runs on it. The customer builds a main board carrying the power supply, RS485 driver and output circuits; mounting FP01 on it completes a lighting control module.
Arduino sketch + PSoC driver
- RS485 command interpretation; address / group / scene management
- SAIence PSoC 4 driver (phase dimming, relay, PWM)
- Main board selected by module type ID
Dedicated case
- Enclosure matched to the product configuration, provided on request
- Main board + FP01 + case form a complete module
02 — ARCHITECTURE
Board configuration and
division of MCU roles
The RA4M1 (Arduino UNO R4 compatible) handles communication and command processing; the PSoC 4 handles timing-critical output control. The RS485 driver, power supply and power circuits are on the main board, so the function changes by redesigning only the main board while FP01 stays the same.
RS485 driver
RS485 from the higher-level controller or wall switches is received by the driver IC on the main board and connected to FP01 via UART (TX / RX / transmit enable).
MAIN BOARDUART→
Arduino UNO R4 compatible
The RA4M1 mounted directly on FP01 interprets 12-byte ASCII commands. It manages circuit addresses, groups, scenes and fades, and stores settings in EEPROM.
FP01I²C→
PSoC 4
On instruction from the RA4M1, it performs phase control synchronized to the zero-cross input, relay drive and generation of PWM dimming signals in real time on up to 16 control outputs.
FP01OUTPUT→
Output circuits
Output stages suited to the application, such as IGBTs, relays or PWM signal conversion circuits, drive lighting fixtures and equipment.
MAIN BOARDDC POWERPower, UART, I²C and control signals all connect to the main board through a single 40-pin FFC cable. Operating power comes from the main board; the MCUs on FP01 handle serial communication only, and the RS485 physical layer is implemented on the main board.
03 — SIGNAL PATHS
Signal paths
of FP01 Rev2.1
FP01 is a double-sided board with USB-C, switches and the OLED on the front, and the Arduino UNO R4 compatible MCU (U1), PSoC 4 (U2), EEPROM (U3) and 40-pin FFC (P3) on the back. The EDA traces and vias are rebuilt in 3D, and six signal paths are shown in sequence. I²C addresses and the register map are on the I²C communication specification page, and the 40-pin pin map is on the FFC connector specification page.
LOADING SIGNAL PATHS…
SIGNAL PATHSFP01 Rev2.1
VIEW —
EDA DATAThe 3D traces are the actual routes extracted from the trace and via coordinates of the EDA board data (FP01 Rev2.1); line widths are enlarged for visibility. Drag to rotate, scroll to zoom, right-drag to pan.
04 — APPLICATIONS
Four control methods
available with FP01
With the same FP01 and software, the control method changes with the main board it is combined with. All dimming levels use a common scale of 0–1000 (0.1% steps).
Phase dimming
The PSoC 4 phase-controls power devices such as IGBTs on the main board in sync with the supply zero cross.
IGBTX4 / DIMX4Relay control
Lighting and equipment ON/OFF is controlled simply, with the same command set, groups and scenes as dimming.
RELAYX8 / RRX8PWM dimming
The PSoC 4 generates PWM dimming signals; the signal circuit on the main board converts them into dimming signals compatible with the lighting fixtures.
PWMX4DMX Master
Instructs an Arduino UNO DMX Master main board over I²C and controls the DMX channel (1–512) assigned to each circuit.
DMX MAIN BOARD05 — FIRMWARE
12-byte
command format
The Arduino sketch works with simple ASCII commands: 1 mode character + 3-digit address + 4-character instruction + 4-digit argument. They can be sent directly from an HA controller or terminal software on a PC. Try assembling one below.
RS485 PACKET
MODEADDRESS / GROUPINSTRUCTIONARGUMENT
64
Maximum number of circuits (local addresses) per module
16
Number of groups each circuit can join
32
Scene table per circuit (a no-change value is allowed)
0.1%
Dimming level resolution (0–1000), with MIN/MAX scaling
ALSOFade time, on-delay, power-on level, UP/DOWN steps (two sets: for wall switches and for HA), circuit descriptions, identification blink and more are stored in EEPROM. The module address and type can be set on site with the 1.5-inch OLED (SPI) and two user buttons.
06 — MAIN BOARDS
Main boards
for FP01
The FP01 firmware identifies the main board by its module type ID and switches the number of local addresses and the control method. Main boards are built by the customer. SAIence provides reference boards verified in combination with FP01 as evaluation test boards.
ID 1
ID 2 · REFERENCEIGBTX4
IGBT phase dimming 4ch
DIMX4
Power semiconductor phase dimming, 4 circuits
View page → ID 3 · REFERENCEPWMX4
PWM dimming signal, 4 circuits
View page → ID 4 · REFERENCERELAYX8
Relay, 8 circuits
View page →ID 5
RRX8
Relay 8ch series
ID 6
ID 7 · REFERENCECTRL1
Control
RS485X
RS485, 4 ports (32 circuits)
View page →07 — SPECIFICATIONS
Specifications
Specifications as of FP01 Rev2.1 / firmware Rev13.
| Model / revision | FP01 Rev2.1 |
|---|---|
| Category | Common control board for lighting control modules (sold by SAIence) Front: DIP parts + SMT; back: SMT only |
| MCUs | Renesas RA4M1 (R7FA4M1AB3CFM, Arduino UNO R4 compatible; command processing and communication) + PSoC 4 (CY8C4245PVI-482; output control) I²C between RA4M1 and PSoC 4. The MCU is mounted directly on FP01, not as a UNO R4 board module |
| Communication | Serial communication over RS485 (12-byte ASCII commands / 8-byte v command) The RS485 driver IC is on the main board (FP01 provides UART TX / RX and transmit enable) |
| Controlled devices | Phase dimming (IGBT etc.), relays, PWM dimming signals, DMX (via a DMX Master main board) |
| Circuits | Up to 64 local addresses per module 4 / 8 / 32 circuits depending on type ID |
| Dimming resolution | 0–1000 (0.0–100.0%, 0.1% steps) |
| Groups / scenes | 16 groups / 32 scenes per circuit |
| Settings storage | I²C EEPROM 32 KB (AT24C256; addresses, groups, scenes, MIN/MAX, fades, etc.) |
| Operation / display | 1.5-inch OLED module (128×128 dots, monochrome, SH1107, SPI 7-pin), user buttons ×2, reset button, status LEDs (POWER / D13 / TX / RX) Back-mount structure: the OLED module's pins are inserted from the front and received by a socket on the back. The LEDs are mounted on the back and seen through holes in the front |
| Connectors | Main board connection: 40-pin FFC connector (0.5 mm pitch, back side) USB Type-C (for writing Arduino sketches) / 10-pin for PSoC 4 programming The 40 pins carry power, UART, I²C ×2, 16 PSoC control outputs, zero-cross input and Arduino general-purpose I/O |
| Power supply | DC supplied from the main board Can also be powered from USB Type-C when writing sketches (with PTC fuse and reverse-current protection diode) |
| Package | FP01 board / sketch for Arduino (UNO R4 compatible) / PSoC 4 with SAIence driver Dedicated case is an option (on request) |
| Dimensions (measured from 3D model) | — |
CONTACT
Contact
The FP01 board, Arduino sketch and PSoC driver are sold as a set. Contact us about specifications, pricing and lot sizes, main board design, evaluation with reference boards, or configurations including the case.
Ask about FP01 ↗