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Results tagged with hc-sr04
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user 20245
For questions about the HC-SR04 ultrasonic ranging sensor.
1
vote
Arduino with 2 echo sensors
In the 1 sensor program all the delays added together account for
62ms between samples.
In the 3 sensor program the sample code contains delays which likely
exceed 12ms (delays plus code execution). …
- 7,470
2
votes
HC-SR04 distance measuring without delay?
delay() causes the processor to do nothing but wait. You need to switch to millis().
In your code, you need to "grab" the current time using millis() and store it in a variable. Add the number of …
- 7,470
3
votes
Ways to detect if a ball has reached the wall?
The ball will hit the wall with a small impact...
Consider using the well proven pinball bumper design omitting the hammer feature:
In many pinball machines a "rubber ring" is stretched in front of …
- 7,470
1
vote
Multiple HC-SR04 with one 5v 7805 regulator
You really could benefit from a DC/DC switching power supply. For instance you are wasting about 20% of the power of the 7.2V battery and something like 50% of the power of the 11.1V battery.
That …
- 7,470