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added hc-sr04

Raymond Mouthaan 2018-04-21 11:11:03 +02:00
parent a82952c46f
commit 2fa3449178
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27
Wemos-D1-Mini.md

@ -231,3 +231,30 @@ In the Configuration -> Configure Module page, select the following:
After reboot of the device the displays the VEML6070 UV light intensity.
<img src="https://github.com/arendst/arendst.github.io/blob/master/media/wemos/wemos_veml6070_main_marked.jpg" width=300>
## HC-SR04 Ultrasonic Sensor
<img src="https://github.com/arendst/arendst.github.io/blob/master/media/wemos/hc-sr04-ultrasonic-sensor-blue.jpg" align=right width=225>
<img src="https://github.com/arendst/arendst.github.io/blob/master/media/wemos/hc-sr04-ultrasonic-sensor-red.jpg" align=right width=225>
"This is the HC-SR04 ultrasonic ranging sensor. This economical sensor provides 2cm to 400cm of non-contact measurement functionality with a ranging accuracy that can reach up to 3mm. Each HC-SR04 module includes an ultrasonic transmitter, a receiver and a control circuit." See [HC-SR04 Ultrasonic Sensor](https://www.sparkfun.com/products/13959) for more information.
Connecting the HC-SR04 to a Wemos Mini D1.
| Wemos | HC-SR04 |
|---|---|
|GND |GND |
|5V |VCC |
|D6 (gpio12) |Trig |
|D7 (gpio13) |Echo |
In the Configuration -> Configure Module page, select the following:
1. **Module Type : 18 Generic**
2. **D6 GPIO12 : 69 SR04 Tri**
3. **D7 GPIO13 : 70 SR04 Ech**
<img src="https://github.com/arendst/arendst.github.io/blob/master/media/wemos/wemos_hc-sr04_config_marked.jpg" width=300>
After reboot of the device the displays the HC-SR04 distance.
<img src="https://github.com/arendst/arendst.github.io/blob/master/media/wemos/wemos_hc-sr04_main_marked.jpg" width=300>