ET-S71
5-Channel IR Line Sensor
5 reflective IR sensors with analog outputs and emitter enable
AED 29.00
Out of stockOverview
5 reflective IR sensors with analog outputs and emitter enable
The ET-S71 is built around the 5 × Everlight ITR8307 reflective IR sensors, 8mm pitch, 1–5mm optimal distance. It connects over 5 analog outputs (use ADC pins) + emitter enable and is powered from 3.3–5V, ~45–85mA with emitters on.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- Line-following robots
- Edge detection
- Encoder discs
Key features
What makes it different
Sensors
5 × Everlight ITR8307 reflective IR sensors, 8mm pitch, 1–5mm optimal distance
Interface
5 analog outputs (use ADC pins) + emitter enable
Supply
3.3–5V, ~45–85mA with emitters on
Feature
EN switches all emitters: read with LEDs on and off and subtract ambient light
Open documentation
Schematic, BOM and layout notes published for every board.
Breadboard friendly
Standard 2.54 mm pitch and M2.5 mounting holes.
Specifications
Technical specifications
| Sensors | 5 × Everlight ITR8307 reflective IR sensors, 8mm pitch, 1–5mm optimal distance |
|---|---|
| Interface | 5 analog outputs (use ADC pins) + emitter enable |
| Supply | 3.3–5V, ~45–85mA with emitters on |
| Feature | EN switches all emitters: read with LEDs on and off and subtract ambient light |
| Size | 50.0 × 15.0 mm |
|---|---|
| Mounting | 2 end mounting holes (M2) |
| Connectors | 8-pin 2.54 mm header |
| Main IC | ITR8307/S18/TR8 (LCSC C264275) |
| Revision | Rev A |
| Libraries | Pololu QTRSensors (analog mode), simple analogRead, ESPHome adc |
|---|
Performance
Sensing
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | Power | 3.3–5V |
| 2 | GND | Ground | Ground |
| 3 | OUT1 | Output | Analog: low = reflective (white) |
| 4 | OUT2 | Signal | OUT2 |
| 5 | OUT3 | Signal | Centre |
| 6 | OUT4 | Signal | OUT4 |
| 7 | OUT5 | Signal | OUT5 |
| 8 | EN | Control | Emitters on (high, default) / off (low) — strobe to reject sunlight |
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-S71 5-Channel IR Line Sensor (assembled)
- 1 × 8-pin 2.54 mm male header, unsoldered
Getting started
- Wire the header: VIN, GND, OUT1, OUT2, OUT3, OUT4
- Libraries: Pololu QTRSensors (analog mode), simple
analogRead, ESPHomeadc
Compare
Which simple sensor?
| 5-Channel IR Line Sensor (this board)This board | ET-S72 IR Remote Receiver + Transmitter | ET-S74 DRV5032 Magnetic Door Switch | ET-S75 Water Leak / Rain Detector | |
|---|---|---|---|---|
| What it does | 5 reflective IR sensors with analog outputs and emitter enable | Learn and send TV / AC remote codes, 38 kHz | Ultra-low-power Hall switch for doors and lids | Gold-plated probe with adjustable digital and analog outputs |
| Interface | 5 analog outputs (use ADC pins) + emitter enable | RX digital out (active low), TX logic in (carrier… | Push-pull digital out, low with magnet | — |
| Best for | Line-following robots | Home Assistant IR blasters | Door and window sensors | Leak alerts under sinks and heaters |
| Price | 29 AED | 22 AED | 12 AED | 15 AED |
Downloads
Documents and design files
Need a custom version of this board?
Different connector, size or sensor? We design and build custom variants.