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Minor README.md change [skip ci]

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Daniele Viganò 2020-06-21 16:07:02 +02:00
parent ddf6334b18
commit fb92cd3198
Signed by: dani
GPG Key ID: DB49AFC03C40EE02
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README.md
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@ -145,6 +145,38 @@ DOCKER_HOST='127.0.0.1:22375' docker-compose -f docker-compose.modules.yml up -d
A simple Arduino UNO sketch is provided in the `arduino/tempLightSensor` folder.
The sketch reads temperature and light from sensors.
```c
/* ... */
void loop(void) {
const int postDelay = 10 * 1000;
unsigned int tempReading = analogRead(A0);
unsigned int photocellReading = analogRead(A1);
float tempVoltage = tempReading * AREF_VOLTAGE / 1024.0;
float tempC = (tempVoltage - 0.5) * 100 ;
if (NTPValid) {
telemetry["clock"] = timeClient.getEpochTime();
} else {
telemetry["clock"] = NULL; // converted into 0
}
payload["light"] = photocellReading;
temp["celsius"] = tempC;
temp["raw"] = tempReading;
temp["volts"] = tempVoltage;
#if USE_MQTT
publishData(config, telemetry);
#else
postData(config, telemetryURL, telemetry);
#endif
/* ... */
```
[Read more ...](./arduino/README.md)
## Testing