Ultimeter Resources

Ultimeter 2000 Pinouts
PERL Scripts
Parsing Ultimeter in C

Ultimeter 2000 Pinouts

Connecting to a PowerPC, PC, or TNC

RS 422	RS 232	PPC	PC	U 2000	U II
HSKo	RTS	1	7	---	---
HSKi	CTS	2	8	---	---
TXD-	TXD	3	3	6	---
GND	GND	4	5	5	5
RXD-	RXD	5	2	3	3
TXD+	---	6	---	---	---
GPi	---	7	---	---	---
RXD+	---	8	---	5	---

Accessory/Serial Port on Control Head

	Function
1	Special (What?)
2	+5 VDC
3	Data Output (TXD)
4	Indoor Humidity (sensor same as outdoor)
5	Ground
6	Data Input (RXD)

Control Head on Junction Block

	Function	Destination
1	Rain	Rain 4, 5
2	Wind Speed	Wind 5
3	Wind Direction	Wind 4
4	VCC +5 VDC	All Pin 1
5	Outdoor Temp	Temp 2, 3; Humidity 3
6	Outdoor Humidity	Humidity 4
7	Ground	Various
8	+9 VDC	All Pin 6

Rain Gauge on Junction Block

	Function
1	VCC +5 VDC (Only on PRO?)
2	Ground (Redundant)
3	Ground
4	Rain
5	Rain (Redundant)
6	+9 VDC (Heater?)

PRO Rain Gauge internal board connection

	Function	Wire Color (may vary)
1	Ground	Yellow
2	VCC +5 VDC	Red
3	Rain Signal	Black

Anemometer on Junction Block

	Function
1	VCC +5 VDC (Unused?)
2	Ground
3	Ground
4	Wind Direction
5	Wind Speed
6	+9 VDC (Heater?)

Temperature on Junction Block

	Function
1	VCC +5 VDC (Unused?)
2	Temperature (Redundant)
3	Temperature
4	Ground
5	Ground (Redundant)
6	+9 VDC (Unused?)

Humidity on Junction Block

	Function
1	VCC +5 VDC (Unused?)
2	Ground?
3	Temperature
4	Humidity
5	Ground?
6	+9 VDC (Unused?)

PERL scripts for the Ultimeter 2000

Collection of Ultimeter 2000 PERL scripts (gzipped tape archive, 48 KB)
Browse Ultimeter 2000 related files (SysV scripts, References, etc)
ChangeLog
Web CVS Repository Browser

Serial Port Problems on Linux: If you have trouble reading data from your serial port then it's possible that the port is in a bad mode. Assuming you use ttyS1 then try resetting the port using this command: stty -F /dev/ttyS1 1:0:800008bb:0:3:1c:7f:15:4:5:1:0:11:13:1a:0:12:f:17:16:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0; If that worked then add the command to your /etc/rc.d/rc.local, or some other init, script so the port is reset at each system initialization.
Note: The Ultimeter 2000 logger uses Complete Record mode. It will not interfere with the operation of Peet Bros peripherals such as the "Weather Picture" or remote heads.
Thanks: Jonathan Bradshaw who wrote the u2logger and wxbeacon PERL scripts. They have been mostly unmodified.

Weather Underground Stations using this software

Parsing Ultimeter in C

ultimeter.c was written as a test for another project. It's an example of how one can parse the various Ultimeter formats. Particularly, take note of how wind data is processed in the parse_peet_complete() function. This is not as simple as it may first seem.

To compile using GCC: gcc -o ultimeter ultimeter.c

ultimeter.c functions and example calls.
metric.h imperial to metric conversion macros.