What optical water and gas probes can I use or would you recommend? I ordered the ones via the shop, but they aren't compatible with my Belgian Water and Gas meters.
I bought these as well. Are you using the USB port of the flukso as 5V power source? Not sure what the flukso accepts as input, 3v3 or 5v ?
petur |
I measured the pulse inputs today, they are pulled up to 3v3. Can anybody confirm the inputs can cope with 5v?
Forum search brings up discussion where it is also stated that the pull-up is 5v so I'm assuming this changed with newer hardware revisions (v3?)
Using the 5v of the flukso usb would be a leaner install than adding a 3v3 psu
gebhardm |
open collector! The current comes from the FLM and is just switched. There is no input in the sense that you put a voltage in. And it may be 5V tolerant if the microcontroller is. But, please, google the principle, and that of pulse inputs is OC.
gebhardm |
...if unsure, put an optocoupler inbetween...
petur |
My initial idea was to check with Fluc how he connected it, since I bought the same sensors.
They work between 3v and 5v, but if the Flukso is happy with 5v I can do without a 3v3 regulator.
I know OC, but there is a pull-up to 3v3 rail of the flukso it seems, and I'm not sure of the details.
Have you seen the schematics of the flukso? Because all I can find on the forum is a big pull-up to 5v and that info no longer holds true.
gebhardm |
The schematics say: Input pin pulled high and switched to Ground on pulse; therefore the OC-setup :-) (or a reed-switch which is just shorting (+) and (-))
Thanks for the input, I'm getting a 3v3 regulator to be sure, so both sensors will output 0 or 3v3 to the flukso pulse inputs
petur |
I'm beginning to doubt the TCRT5000 is a good choice for my Schlumberger gas meter, the sensitivity window is very small - either it detects the plastic window or doesn't detect the mirrorstrip of digit 0.
Unless I'm doing something wrong. Might try to give it a slight angle to avoid reflection by the window, but other than that?
Wizzopa |
@petur
I also used a TCRT5000 first and ran into the same problems. I now use this the transmitter and receiver are smaller and are closer together.
Thanks!
It doesn't look much closer, but tx and rx are encapsulated in plastic so when pressed against the window there's no way it can detect the window itself. *facepalm* ;)
Hey, my water and gas meters are working with these:
https://www.ebay.com/itm/Blue-TCRT5000-Barrier-Line-Track-Sensor-Infrare...
Thanks, Fluc!
I ordered a set. Will test when they arrive.
Andy.
I bought these as well. Are you using the USB port of the flukso as 5V power source? Not sure what the flukso accepts as input, 3v3 or 5v ?
I measured the pulse inputs today, they are pulled up to 3v3. Can anybody confirm the inputs can cope with 5v?
Forum search brings up discussion where it is also stated that the pull-up is 5v so I'm assuming this changed with newer hardware revisions (v3?)
Using the 5v of the flukso usb would be a leaner install than adding a 3v3 psu
open collector! The current comes from the FLM and is just switched. There is no input in the sense that you put a voltage in. And it may be 5V tolerant if the microcontroller is. But, please, google the principle, and that of pulse inputs is OC.
...if unsure, put an optocoupler inbetween...
My initial idea was to check with Fluc how he connected it, since I bought the same sensors.
They work between 3v and 5v, but if the Flukso is happy with 5v I can do without a 3v3 regulator.
I know OC, but there is a pull-up to 3v3 rail of the flukso it seems, and I'm not sure of the details.
Have you seen the schematics of the flukso? Because all I can find on the forum is a big pull-up to 5v and that info no longer holds true.
The schematics say: Input pin pulled high and switched to Ground on pulse; therefore the OC-setup :-) (or a reed-switch which is just shorting (+) and (-))
I using the serial port for the power supply of the sensor with the FLM02B, and https://www.aliexpress.com/item/1PCS-power-module-Adjustable-MP1584EN-DC... on my FLM02A
https://www.flukso.net/content/watermeter-possible-solution
Thanks for the input, I'm getting a 3v3 regulator to be sure, so both sensors will output 0 or 3v3 to the flukso pulse inputs
I'm beginning to doubt the TCRT5000 is a good choice for my Schlumberger gas meter, the sensitivity window is very small - either it detects the plastic window or doesn't detect the mirrorstrip of digit 0.
Unless I'm doing something wrong. Might try to give it a slight angle to avoid reflection by the window, but other than that?
@petur
I also used a TCRT5000 first and ran into the same problems. I now use this the transmitter and receiver are smaller and are closer together.
https://www.reichelt.nl/arduino-grove-line-finder-grv-line-finder-p19117...
Thanks!
It doesn't look much closer, but tx and rx are encapsulated in plastic so when pressed against the window there's no way it can detect the window itself. *facepalm* ;)