ET-S52
INA219 10 A Current Monitor
High-current version with a 0.01 Ω shunt, up to 10 A
AED 29.00
Out of stockOverview
High-current version with a 0.01 Ω shunt, up to 10 A
The ET-S52 is built around the TI INA219 — high-side current, bus voltage and power, 12-bit, calibrated in software. It connects over I²C 0x40 (4 addresses); Qwiic / STEMMA QT and is powered from 3.0–5.5V logic (separate from the measured bus).
Two Qwiic / STEMMA QT connectors let you chain it with other boards without soldering, and the 2.54 mm header fits a breadboard.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- E-bike and robot battery packs
- 12 V / 24 V loads
- Solar charge logging
Key features
What makes it different
Sensor
TI INA219: high-side current, bus voltage and power, 12-bit, calibrated in software
Range
0–26V bus, up to 10A continuous (board copper/terminal limit; the chip reads ±32A on 0.01Ω), ~8mA steps at 12-bit
Interface
I²C 0x40 (4 addresses); Qwiic / STEMMA QT
Supply
3.0–5.5V logic (separate from the measured bus)
Qwiic / STEMMA QT
Two JST-SH connectors plus a 2.54 mm header — 3.3 V and 5 V hosts.
Open documentation
Schematic, BOM and layout notes published for every board.
Specifications
Technical specifications
| Sensor | TI INA219: high-side current, bus voltage and power, 12-bit, calibrated in software |
|---|---|
| Range | 0–26V bus, up to 10A continuous (board copper/terminal limit; the chip reads ±32A on 0.01Ω), ~8mA steps at 12-bit |
| Interface | I²C 0x40 (4 addresses); Qwiic / STEMMA QT |
| Supply | 3.0–5.5V logic (separate from the measured bus) |
| Size | 25.4 × 17.8 mm |
|---|---|
| Mounting | 4 × M2.5 holes, 2.54 mm from each corner |
| Connectors | 2 × Qwiic / STEMMA QT (JST SH 4-pin) · 4-pin 2.54 mm header |
| Main IC | INA219AIDCNR (LCSC C87469) |
| Revision | Rev A |
| Libraries | Adafruit_INA219, CircuitPython adafruit_ina219, ESPHome ina219 |
|---|
| JP1 (default Closed) | Cut to turn off the LED |
|---|---|
| JP2 (default Closed) | Cut to remove the host-side I2C pull-ups |
| JP3, JP4 (default Open) | Bridge A0 / A1 to VIN → 0x41, 0x44, 0x45 |
Performance
Current range
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | Power | Sensor supply = host logic level |
| 2 | GND | Ground | Ground |
| 3 | SCL | I²C | I²C clock |
| 4 | SDA | I²C | I²C data |
Qwiic / STEMMA QT pins: GND, VIN, SDA, SCL (same on both connectors). I²C pull-ups (10 kΩ) are on the board; cut JP2 to remove them.
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-S52 INA219 10 A Current Monitor (assembled)
- 1 × 4-pin 2.54 mm male header, unsoldered
Getting started
- Plug in a Qwiic / STEMMA QT cable, or solder the header and wire VIN, GND, SDA and SCL
- Libraries: Adafruit_INA219, CircuitPython adafruit_ina219, ESPHome
ina219 - Run an I²C scanner to confirm the address: 0x40
Compare
Which current monitor?
| INA219 10 A Current Monitor (this board)This board | ET-S51 INA219 Current & Power Monitor | ET-S07 INA228 85 V Power Monitor | |
|---|---|---|---|
| What it does | High-current version with a 0.01 Ω shunt, up to 10 A | Measure voltage, current and power up to 26 V / 3.2 A, Qwiic | 20-bit current, voltage, power and energy monitor |
| Interface | I²C 0x40 (4 addresses); Qwiic / STEMMA QT | I²C 0x40 (4 addresses); Qwiic / STEMMA QT | I²C 0x40 default; 0x41/0x44/0x45 via JP3/JP4 (16… |
| Best for | E-bike and robot battery packs | Battery and solar monitoring | Battery and solar monitoring |
| Price | 29 AED | 29 AED | 59 AED |
Downloads
Documents and design files
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