New 2.0 version of JSn-sr04t board, now has two serial modes with mm readout...

Comments (3)

Phil Buhler

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2017-09-24T21:21:21+00:00

Tim Eckel repo owner

If the accuracy is only 1cm, the mm reading is worthless. Also, there's never been a limitation to 1cm with NewPing. The ping_cm() method of course returns values in cm, but NewPing is not limited to 1cm accuracy. You can simply do a ping() and then do whatever math you want to be as accurate as you wish. Keep in mind, that just because you CAN do this with NewPing, doesn't change the fact that these sensors are not accurate enough to return good results. It would be SUPER easy to add a ping_mm() method to NewPing, but it would be 100% worthless. I've tried to express this maybe 100 times, but it keeps falling on deaf ears.

Also, it sounds like this sensor would already be compatible with NewPing in mode 1. In mode 2 you wouldn't need NewPing at all as it's just a serial connection that returns the distance. Other sensors work like this too, and those don't need the NewPing library as you just communicate with then directly and get the distance readings. But, in mode 1 it would work just like any other ultrasonic sensor.

2017-09-25T14:30:05+00:00

Tim Eckel repo owner

changed status to resolved

Nothing to do, sensor would already work in mode 1 and mm results are already possible with NewPing using the ping() method.

2017-09-25T14:30:49+00:00

Phil Buhler
This is my login name
- 2017-09-24T21:21:21+00:00
Tim Eckel repo owner
If the accuracy is only 1cm, the mm reading is worthless. Also, there's never been a limitation to 1cm with NewPing. The ping_cm() method of course returns values in cm, but NewPing is not limited to 1cm accuracy. You can simply do a ping() and then do whatever math you want to be as accurate as you wish. Keep in mind, that just because you CAN do this with NewPing, doesn't change the fact that these sensors are not accurate enough to return good results. It would be SUPER easy to add a ping_mm() method to NewPing, but it would be 100% worthless. I've tried to express this maybe 100 times, but it keeps falling on deaf ears.

Also, it sounds like this sensor would already be compatible with NewPing in mode 1. In mode 2 you wouldn't need NewPing at all as it's just a serial connection that returns the distance. Other sensors work like this too, and those don't need the NewPing library as you just communicate with then directly and get the distance readings. But, in mode 1 it would work just like any other ultrasonic sensor.
- 2017-09-25T14:30:05+00:00
Tim Eckel repo owner
- changed status to resolved
Nothing to do, sensor would already work in mode 1 and mm results are already possible with NewPing using the ping() method.
- 2017-09-25T14:30:49+00:00
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