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project:weathersonde:hw [2013/06/26 18:34]
pinky [Vaisala weather sonde hardware]
project:weathersonde:hw [2014/02/20 22:28] (current)
pinky [Connectors]
Line 1: Line 1:
 ====== Vaisala weather sonde hardware ====== ====== Vaisala weather sonde hardware ======
  
-  ​===== pinouts =====+===== Sensors stick ===== 
 + 
 +TODO image 
 + 
 +^ name ^ description ^ 
 +| tempC | temperature sensor (capacitive ?) | 
 +| HUM1 | humidity sensor 1 | 
 +| HUM2 | humidity sensor 2 | 
 +| temp2 | thermistor | 
 + 
 +===== Connectors ====== 
 + 
 +^ name ^ description ^ 
 +| CON1 | service connector - used for programming and during calibration | 
 +| CON2 | external sensors connector | 
 +| CON3 |  | 
 +| CON4 | service connector + other | 
 +| CON5 | join main board and TX boarx | 
 +| CON6 | join main board with sensors board | 
 +| CON7 |  | 
 +| CON8 |  | 
 + 
 +  * GPS antenna: 3dBic (dB - isotropic circular), RHCP, omnidirectional 
 + 
 +===== pinouts =====
  
 Pinouts as used in this project. Pinouts as used in this project.
  
-{{:​project:​weathersonde:​side_a.png?​direct&​300|}}+{{:​project:​weathersonde:​side_a.png?​direct&​300|}} ​{{:​project:​weathersonde:​side_b.png?​direct&​300|}} 
 + 
 +==== CON1 ====
  
-CON1 pin ^ description ^+^ pin ^ description ^
 | 1 | GND | | 1 | GND |
 | 2 | +9Vcc - 9 V | | 2 | +9Vcc - 9 V |
Line 21: Line 47:
 | 12 | RESET - ground to switch into service mode | | 12 | RESET - ground to switch into service mode |
  
-CON4 pin ^ description ^+==== CON4 ==== 
 +pin ^ description ^
 | 1 |  | | 1 |  |
 | 2 |  | | 2 |  |
-| 3 |  +| 3 | GND 
-| 4 |  +| 4 | GND 
-| 5 |  +| 5 | ? (to u-controller pin 27, pull-up) ​
-| 6 |  +| 6 | ? (to u-controller pin 26, floating) ​
-| 7 |  |+| 7 | ? (to u-controller pin 45, pulled-down) ​|
 | 8 |  | | 8 |  |
-| 9 |  +| 9 | ? (to u-controller pin 46, pull-up) ​
-| 10 |  +| 10 | SPI_SS_EEPROM - SPI select EEPROM ​
-| 11 |  +| 11 | SPI_MOSI ​
-| 12 |  +| 12 | SPI_CLK ​
-| 13 |  +| 13 | SPI_MISO ​
-| 14 |  |+| 14 | RESET - ground to switch into service mode |
 | 15 |  | | 15 |  |
 | 16 | +2V8cc - 2.8 V, generated by regulator (IC ?? TODO) from +9Vcc | | 16 | +2V8cc - 2.8 V, generated by regulator (IC ?? TODO) from +9Vcc |
  
-TODO: pin description for connector CON2 CON3 CON4+==== CON5 ====
  
 +TODO: the following must be re-checked
  
- ===== Parts - Integrated curcuits description =====+^ pin ^ description ^ 
 +| 1 | Logic VCC (3.45V) | 
 +| 2 | Serial Clock (2400Hz) | 
 +| 3 | Serial Data (2400 Baud) | 
 +| 4 | TX Enable? Stays low when clock starts, but goes high later (when serial data is present) | 
 +| 5 | SPI Data Input | 
 +| 6 | GND | 
 +| 7 | 16MHz clock from GPS Module | 
 +| 8 | GND | 
 +| 9 | SPI Clock | 
 +| 10 | TX Programming??​ - Could be Chip Select | 
 +| 11 | Internal LDO Inhibit. Is wired to the module'​s LDO regulators Inhibit pin via 10k resistor. | 
 +| 12 | TX Inhibit - Connected to Base of Switching transistor inside module. | 
 +| 13 | Main Power - Measured Battery Voltage on this pin (12V in my case) | 
 +| 14 | GND | 
 + 
 +==== CON6 ==== 
 + 
 +^ pin ^ name ^ description ^ 
 +| 1 | VCC | power (9V) | 
 +| 2 | HEAT_TOP | enable heating for upper humidity sensor (0 V - disabled, 3V - enabled) | 
 +| 3 | MEAS | measurement signal with varying frequency, (2.75V, square, f ~= 10kHz) | 
 +| 4 | GND | 
 +| 5 | THERM | connect directly to thermistor on sensors stick (silver blob) | 
 +| 6 | START | restart measurement cycle (3V pull-up, 1 ms pulse to 0V, repeats with 1sec period) | 
 +| 7 | SENS_SELECT | cycle trought sensors (3V pull-up, 2ms pulse to 0V to select next sensor, 30-40 ms per measurement,​ 8 pull-down pullses before measurement restart) | 
 +| 8 | HEAT_BOTTOM | enable heating for lower humidity sensor (0 V - disabled, 3V - enabled) | 
 + 
 + 
 +TODO: other connectors 
 + 
 + 
 +===== Parts - Integrated curcuits description =====
  
 === IC1 - SPI EEPROM === === IC1 - SPI EEPROM ===
Line 56: Line 116:
  
 === IC3 === === IC3 ===
-  * type: uN8021C ​(TODO)+  * type: uN8021C
   * description:​ GPS FR fronend   * description:​ GPS FR fronend
  
 +=== IC4 - RF PCB ===
 +
 +  * type: TX1B \\ VAISALA \\ 1129G \\ 37133
 +
 +=== IC5 - RF PCB ===
 +  * type: L4931C50 \\ (ST) GK23b
 +
 +Very low drop voltage regulator (5.0 V) with inhibits.
 +
 +=== IC6 - sensors PCB ===
 +  * pins: 24
 +  * type: VAISALA1608B1 \\ G1223 \\ 40981
 +
 +=== IC7 - sensors PCB ===
 +  * pins: 8
 +  * type: C25 \\ 03 \\ nD2 \\ 28
 +
 +=== IC8, IC9 - sensors PCB ===
 +  * pins: 6
 +  * type: r13
 +  * description:​ NPN and PNP transistor in single package
  
  
 
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