| Price | $3 |
|---|---|
| Category | Sensors |
| Availability | In stock |
| Delivery | Shipped across Lebanon, or collect from the lab |
A passive 5:1 divider on a tiny board - 30k over 7.5k - that brings a battery or supply voltage down into the range an analog input can read. On a 5V, 10-bit Arduino that means up to 25V measured in roughly 0.024V steps; on a 3.3V board the ceiling is about 16.5V. Screw terminal for the supply being measured, 3-pin header to the microcontroller. There is no chip and nothing to configure, which is exactly why it never surprises you.
Key features
- Reads up to 25V on a 5V board, about 16.5V on 3.3V
- Fixed 5:1 divider, 30k and 7.5k resistors
- Roughly 0.024V steps on a 10-bit 5V ADC
- Screw terminal in, 3-pin header out
- Passive - no chip, no configuration
- Not isolated - it shares ground with your board
Details
Specifications
| Type | Resistive voltage divider (passive) |
|---|---|
| Input range | 0-25V DC on a 5V ADC, 0-16.5V DC on a 3.3V ADC |
| Divider ratio | 5:1 (30k / 7.5k) |
| Output | Analog |
| Resolution | About 0.024V per step, 10-bit at 5V |
| Connections | 2-pin screw terminal, 3-pin header (S / + / -) |
| Dimensions | 28 x 14 x 13 mm |
| Weight | 4 g |
