https://github.com/weewx/weewx/issues/67
reported a 10.6/9.9 = 1.07 correction factor needed, nearly identical to
mine.
Do any TE923 owners get correct rain reported? Or is your console
consistently ~7% higher than what weewx reports?
Here's a more complete patch I am going with. Or of course *= 1.07 in
[StdCalibrate][[Corrections] if using the driver unmodified.
--- te923.py.orig 2019-07-14 07:12:05.000000000 -0500
+++ te923.py 2020-06-13 17:11:34.896489069 -0500
@@ -51,9 +51,10 @@
This implementation polls the station for data. Use the polling_interval
to
control the frequency of polling. Default is 10 seconds.
-The manual says that a single bucket tip is 0.03 inches. In reality, a
single
-bucket tip is between 0.02 and 0.03 in (0.508 to 0.762 mm). This driver
uses
-a value of 0.02589 in (0.6578 mm) per bucket tip.
+The manual says that a single bucket tip is 0.03 inches. In reality,
+a single bucket tip is between 0.02 and 0.03 in (0.508 to 0.762 mm).
+This driver uses a value of 1/36" as observed in 36 bucket tips per
+1.0 inches on the console. 1/36 = 0.0277777 inch = 0.070555555 mm.
The station has altitude, latitude, longitude, and time.
@@ -1261,7 +1262,7 @@
packet['rainTotal'] = data['rain']
if packet['rainTotal'] is not None:
- packet['rainTotal'] *= 0.06578 # weewx wants cm
+ packet['rainTotal'] *= 0.070555555 # weewx wants cm (1/36"
bucket tips)
packet['rain'] = weewx.wxformulas.calculate_rain(
packet['rainTotal'], last_rain)
@@ -1445,7 +1446,7 @@
# FIXME: figure out how to detect link status between station and rain
bucket
# NB: wview treats the raw rain count as millimeters
def decode_rain(buf):
- """rain counter is number of bucket tips, each tip is about 0.03
inches"""
+ """rain counter is number of bucket tips, each tip is about 1/36
inch"""
data = dict()
if DEBUG_DECODE:
logdbg("RAIN BUF[30]=%02x BUF[31]=%02x" % (buf[30], buf[31]))
@@ -2038,9 +2039,10 @@
data[label % 'max'], _ = decode_humid(buf[12+i*6])
data['windspeed_max'], _ = decode_ws(buf[37], buf[38])
data['windgust_max'], _ = decode_ws(buf[39], buf[40])
- data['rain_yesterday'] = (buf[42] * 0x100 + buf[41]) * 0.6578
- data['rain_week'] = (buf[44] * 0x100 + buf[43]) * 0.6578
- data['rain_month'] = (buf[46] * 0x100 + buf[45]) * 0.6578
+ # these were * 0.6578 but that not right, so just report raw for
now:
+ data['rain_yesterday'] = (buf[42] * 0x100 + buf[41]) * 1
+ data['rain_week'] = (buf[44] * 0x100 + buf[43]) * 1
+ data['rain_month'] = (buf[46] * 0x100 + buf[45]) * 1
tt = time.localtime()
offset = 1 if tt[3] < 12 else 0
month = bcd2int(buf[47] & 0xf)
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