https://www.dropbox.com/s/197ljbtv2knw80e/piBeacon-v-7.71.163.zip?dl=1
this one should do better. Have tested everything w/o actual sensor as low as possible.
Karl
kw123 wrote:https://www.dropbox.com/s/197ljbtv2knw80e/piBeacon-v-7.71.163.zip?dl=1
this one should do better. Have tested everything w/o actual sensor as low as possible.
Karl
kw123 wrote:just ordered one of these and the CO, Methan,.. gas sensors
kw123 wrote:the software code is identical for these devices. just the range is different -- as I understand it .
Karl
GlennNZ wrote:kw123 wrote:the software code is identical for these devices. just the range is different -- as I understand it .
Karl
Thanks
I did see that the code was identical - the resolution of the 5837 is 0.2mBar which is 2mm -probably better for my water tank project. At that resolution could estimate inflow and outflow of water I suspect - which admittedly wouldn’t serve any useful purpose (but were is the fun in that!)
Edit:
Also the temp resolution (24bit) seems incredible?
- resolution of 0.0022 at 25 degrees ?
Glenn
johnpolasek wrote:GlennNZ wrote:kw123 wrote:the software code is identical for these devices. just the range is different -- as I understand it .
Karl
Thanks
I did see that the code was identical - the resolution of the 5837 is 0.2mBar which is 2mm -probably better for my water tank project. At that resolution could estimate inflow and outflow of water I suspect - which admittedly wouldn’t serve any useful purpose (but were is the fun in that!)
Edit:
Also the temp resolution (24bit) seems incredible?
- resolution of 0.0022 at 25 degrees ?
Glenn
Quick question; how are you intending pot the board? I've been looking at doing the same thing for some time once my brother in law gets his cistern resealed (Currently being re epoxied on the inside) using the BMP barometric sensors possibly sealed in a plastic bag; However it looks like this one has a wettable gel pressure plate... I've got a 1300mBar version of the 5803 on order for the cistern and will repurpose the 2 BMPs for another project my brother suggested; an AC/Heat Pump health system to detect when the AC filter needs replacement (DP across the filter) or compressor problems (DT across the coil goes down)...
johnpolasek wrote:I was planning on putting mine in a short nipple added to a "tee" in the outlet line of the cistern to eliminate flow induced venturi effects and using some of the same epoxy we are using to seal the inside of the cistern (which can be filled to about 3.5m) after taping the face of the gel sensor with a small bit of tape and taking the wires out through a hole drilled in a plug on the dead leg. And if I add a valve before the sensor, I should be able to replace it easily if it does leak. But yes, the pressure should be essentially the same all along the pipe as long as the elevation of the line does not change unless the flow rate is very high. Of course, I'm only looking for about 5 cm accuracy to know how rapidly the sprinkler system is drawing down the level.
pressure = ((((D1 * SENS) / 2097152) - OFF) / 8192.0) / 10.0
pressure = ((((D1 * SENS2) / 2097152) - OFF2) / 8192.0) / 10.0
kw123 wrote:got the MS5803_30BA sensor.. It runs on +5V not on +3.3 V!!!
The posted formula on their website is wrong.
it should readinstead of
- Code: Select all
pressure = ((((D1 * SENS) / 2097152) - OFF) / 8192.0) / 10.0
for pressure in mBar. Have it fixed, .. still doing some debugging.
- Code: Select all
pressure = ((((D1 * SENS2) / 2097152) - OFF2) / 8192.0) / 10.0
Also adding support for the CO and CH4xxx sensors
Karl
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