Build quality is acceptable - works nicely - measurements are repeatable. Trig pin has pull-up resistor to 5V, and Echo pin is push-pull, so i recommend using level conversion when interfacing to e.g 3.3V FPGA (Sensor did not work well with 3.3 supply voltage) Price/Function ratio is good, almost excellent.

Build quality is acceptable - works nicely - measurements are repeatable. Trig pin has pull-up resistor to 5V, and Echo pin is push-pull, so i recommend using level conversion when interfacing to e.g 3.3V FPGA (Sensor did not work well with 3.3 supply voltage) Price/Function ratio is good, almost excellent.

Build quality is acceptable - works nicely - measurements are repeatable. Trig pin has pull-up resistor to 5V, and Echo pin is push-pull, so i recommend using level conversion when interfacing to e.g 3.3V FPGA (Sensor did not work well with 3.3 supply voltage) Price/Function ratio is good, almost excellent.

I purchased 10 of these for several projects I am working on. At first I was worried because they were very affordable, I didn't expect much. Once they arrived, I could see the quality was fantastic. They are also very accurate, well exceeding my expectations. For anyone interested, I created an Arduino library for it and put on GitHub - https://github.com/dan-power/Arduino-HC-SR04

I purchased 10 of these for several projects I am working on. At first I was worried because they were very affordable, I didn't expect much. Once they arrived, I could see the quality was fantastic. They are also very accurate, well exceeding my expectations. For anyone interested, I created an Arduino library for it and put on GitHub - https://github.com/dan-power/Arduino-HC-SR04

I purchased 10 of these for several projects I am working on. At first I was worried because they were very affordable, I didn't expect much. Once they arrived, I could see the quality was fantastic. They are also very accurate, well exceeding my expectations. For anyone interested, I created an Arduino library for it and put on GitHub - https://github.com/dan-power/Arduino-HC-SR04

Pros: Quite easy to figure out without any documentation, all the pins are either well-labeled or obvious. Good quality for the price.Also it is really small so it could be hidden if you wanted to. Cons: None that I can think of... Work right away and compatible with arduino, mbed and all kind of other mircocontroller boards. I don't have any cons till now and I can not think of any. Especially for this price!!! Other: Easy to interface to my Arduino, good deal. I will recommend this to friends.

Pros: Quite easy to figure out without any documentation, all the pins are either well-labeled or obvious. Good quality for the price.Also it is really small so it could be hidden if you wanted to. Cons: None that I can think of... Work right away and compatible with arduino, mbed and all kind of other mircocontroller boards. I don't have any cons till now and I can not think of any. Especially for this price!!! Other: Easy to interface to my Arduino, good deal. I will recommend this to friends.

Pros: Quite easy to figure out without any documentation, all the pins are either well-labeled or obvious. Good quality for the price.Also it is really small so it could be hidden if you wanted to. Cons: None that I can think of... Work right away and compatible with arduino, mbed and all kind of other mircocontroller boards. I don't have any cons till now and I can not think of any. Especially for this price!!! Other: Easy to interface to my Arduino, good deal. I will recommend this to friends.

je ne peux pas encore commenté sur sa durée de vie. mais ce produit fonctionne très bien pour moi l'image sur le site parrait plus grande mais sa s'adapte bien a mon projet. 2 point a souligné ; a 400m 9 reponse sur 10 est bonne si votre système n'utilise pas de batterie relier le GND a la terre sinon ca va vaciller.

je ne peux pas encore commenté sur sa durée de vie. mais ce produit fonctionne très bien pour moi l'image sur le site parrait plus grande mais sa s'adapte bien a mon projet. 2 point a souligné ; a 400m 9 reponse sur 10 est bonne si votre système n'utilise pas de batterie relier le GND a la terre sinon ca va vaciller.

je ne peux pas encore commenté sur sa durée de vie. mais ce produit fonctionne très bien pour moi l'image sur le site parrait plus grande mais sa s'adapte bien a mon projet. 2 point a souligné ; a 400m 9 reponse sur 10 est bonne si votre système n'utilise pas de batterie relier le GND a la terre sinon ca va vaciller.

Ezt a modult a lélegeztetőt aktiváló jelenlét észlelésére használják, amikor a szoba hőmérséklete meghaladja a 22C-ot. Ez akkor lehetséges, ha ezt az érzékelőt egy Esp táblához csatlakoztatja, és integrálja a Home Asszisztenssel, ahol az automatizálás létrejön és karbantartja. Ez a modul kiváló minőségű, és mindenkinek ajánlom.

This module will be used for presence detection activating a ventilator when the room temperature is over 22C. This is made possible when you connect this sensor to a esp board and integrate this with Home Assistant where the automation is created and maintained. This module is of high quality and I would recommend it to everyone.

Ezt a modult a lélegeztetőt aktiváló jelenlét észlelésére használják, amikor a szoba hőmérséklete meghaladja a 22C-ot. Ez akkor lehetséges, ha ezt az érzékelőt egy Esp táblához csatlakoztatja, és integrálja a Home Asszisztenssel, ahol az automatizálás létrejön és karbantartja. Ez a modul kiváló minőségű, és mindenkinek ajánlom.

produto de boa qualidade eu recomendo e entrega rápida

produto de boa qualidade eu recomendo e entrega rápida

produto de boa qualidade eu recomendo e entrega rápida

Csodálatos termék ajánlom 👌

Amazing Product I recommend it 👌

Csodálatos termék ajánlom 👌

good very nice

good very nice

good very nice

Cheap price, and quite precise range measurement. Nice deal.

Cheap price, and quite precise range measurement. Nice deal.

Cheap price, and quite precise range measurement. Nice deal.

It's very accurate and its quality is fantastic It is very suitable for robot projects and alarms It has been successfully tested

It's very accurate and its quality is fantastic It is very suitable for robot projects and alarms It has been successfully tested

It's very accurate and its quality is fantastic It is very suitable for robot projects and alarms It has been successfully tested