Your cart is empty.
Your cart is empty.
WayinTop: Your Top Way to Inspiration.
Voltage Sensor Module:
- Voltage input range: DC0-25V
- Voltage detection range: DC0.02445V-25V
- Voltage Analog Resolution: 0.00489V
- DC input connector: Terminal cathode connected to VCC, GND negative pole
- Output interface: "+" then 5/3.3V, "-" then GND, "s" then the for Arduino AD pins
Current Sensor Module:
- The current sensor chips: ACS712ELC
- Current Range: 30A
- Pin 5V power supply, on-board power indicator;
- The module can measure the positive and negative 30 amps, corresponding to the analog output 66mV / A;
- No test current through the output voltage is VCC / 2;
- Note: ACS712 is based on the principle of the Hall test, please use this field to avoid impact
Package Included:
2 x ACS712 30A Current Sensor Module
2 x DC0-25V Voltage Tester Terminal Sensor
Richard Allen
2025-08-17 16:12:24
Nice units that are exactly what I needed! The construction is well done and each unit was separately wrapped.
David Cain
2025-07-29 16:19:46
These work OK and will do the basic job. Don't expect the precision of an expensive multimeter or data acquisition system, though. Sampling with the Analog pins of (most) Arduinos, you'll get 10 bits of resolution (1024 levels).On the current sensor: the chip on mine responds at about 66 mV per Ampere sensed (that's about .066 V - same number, expressed differently, for the noobs). It's important to know this because much of the online information says you'll have from .170 V to .2 V per Ampere. The difference is the particular chip on the board. Mine is an ACS712T ELC-30A (optimized for a 30 Amp range). The data sheet mentions a -5B (185mV/A) and a -20A (100mV/A) version. If you're getting crazy results, look into which chip is on your supplied board. Needed my microscope to read the top of this chip, but found "30A" in the part number, which fixed a lot that was wrong about my readings. Safety-wise, Arduino is isolated from the metered current by the Hall-effect sensor chip.The voltage sensor is just a simple voltage divider. Sure, the screw terminals are really nice, but if you've got to make a quick measurement, then take the circuit apart, you can build this out of precision resistors from your junk box. (If you're going to install something permanent-ish, this board may be worthwhile). As far as I can tell, there's no circuit isolation here, so your Arduino is exposed directly to a circuit that could be pumping out _any_ voltage, if you're not watching out for it. I don't think it's even fused. Maximum sense-able voltage with this device is 25vdc. Not sure what the safe max is, but that probably depends on your Arduino: this voltage divider will knock the input voltage down by a factor of 5 or so.Finally, getting a good measurement out of these requires that you measure and take into account your Arduino's Vcc voltage. If the Arduino thinks its supply voltage is 4.726 vdc, and your example code uses 5vdc, and a center voltage of 2.5v (5vdc/2), your measurements won't make sense. Your sketch needs to use the measured Vcc and Vcc/2 for the center to make the measurements match reality. Also, the Arduino has an internal Vcc measurement (_most_ boards do, anyway), which may differ from an external measurement (with a meter) of Vcc. I'd go with the internal value, if pressed to choose. Getting Vcc and center point right affect your math greatly.The price is right, and I'd buy these again, for simple hobby uses.
Unikia Wright
2025-06-21 11:06:09
Was iffy about this but it turns out pretty well
Customer
2025-06-03 13:46:09
Conforme à la description.
eric regnault
2025-05-21 12:31:39
Pour l’instant, je n’ai essayer que le capteur de tension, il fonctionne très bien
Claudio DIY
2025-03-29 17:44:38
Semplicità di utilizzo. Non necessitano di librerie. Fare una media (10 letture) prima di utilizzare il valore letto.
André Pereira
2025-02-21 10:22:26
Useful little boards that work as intended. The only issue is the low resolution of the current meter, but I can't really blame the seller, as that is given in the spec sheet
Brad J.
2025-01-06 14:34:39
Rated for 30amps but won't fit anything bigger than maybe 18awg in the blocks. Kind of hard to measure any circuit with 12v 30amps when the only wire that fits wouldn't be carrying that amperage.
Recommended Products
$11.58
$ 5 .99 $5.99