Introduction: Satellite Assisted Weather Station

This project is meant for the great unwashe who want to collect their ain brave data. Information technology can measure wind swiftness and focus, temperature and air humidness. It's also capable of listening to weather satellites orbiting the Worldly concern in one case every 100 transactions. I will use this labor afterwards to make my ain weather forecasting victimization AI skilled on these images.

Supplies

Materials

  • Atomic number 13 U-profile 15mm and 12mm, 1 meter eight-day
  • plywood
  • Aluminium tubes 10mm diameter, 4.5m
  • 8 brass tube holders
  • 8 M2 nuts and bolts
  • 2x4.5 cm wooden broadcast, 1.2m long
  • 2 M8 nuts and bolts
  • 3m 50ohm coax
  • 12x12 cm electrical box
  • stir up shrinks
  • solder
  • tripod with hole to fit M8 bolt
  • some Legos
  • 2 pliant containers
  • hot glue

Electronics

  • Raspberry Protease inhibitor 3 or 4
  • Raspberry Pi power supply
  • ethernet cable
  • usb extension cord (leastways 40 cm long)
  • razzing pi power furnish
  • Arduino Nano
  • DHT11 detector
  • reed switch
  • rotary encoder
  • buzzer
  • Nooelec NESDR miniskirt

Tools

  • drill
  • tablesaw
  • soldering iron out
  • lighter
  • screw driver set
  • wanted glue gun for hire

Step 1: Edifice the Transmitting aerial

The Crown of thorns

Make 2 54.2cm long pieces of wood. Drill a maw in the middle for an M8 bolt and mount the 2 pieces in a cross. Then make 4 pieces of 4cm long and saw one end at 45 degree angle. Srew these along top of the ends of the cross. This will make the ends loaded with each other. In the centre of each end, drill a hole large enough for your coax cable.Now mark a 30 angle from rampant. On this slant mount 2 tube holders aprox. 1.5 cm from Centre. If you want you arse drill holes in the cross to make it lighter.

Aluminium Dipoles

Cut 8 50 cm aluminium tubes. 2 tubes mold 1 dipole.

Cutting The Palaver

Cut two 36cm pieces of coax. Deletion 2 many pieces this nonce 72cm long. Cut one more 60 cm piece, this will constitute the main line to the pass catcher.

Mount the coax cables with the same length opposite to from each one other. The sides with 36 centimetre coax are dipoles 1 and 2, the sides with 72 cm dipoles 3 and 4.

Strip the ends of the coax for soldering. The SDR receiver comes with its own antenna and coax, cut the wire at its connector. Later we solder this to our main coax take shape our personal antenna.

Wiring

At the ends of the crossbreed, connect the inwardness of the coax to the upper part of the dipole, the shielding goes the lower portion. In the centre, solder the shielding of dipoles 1 and 2 together. Exercise the same for 3 and 4. Now solder the cores from dipoles 1 and 3 put together, same for 2 and 4. Like a sho you're left hand with only 2 wires.

Solder the cores from dipole antenna 1 and 3 to the shielding of the liquidator crinkle. Solder cores from dipoles 2 and 4 to the core of the receiver line.

Mounting The Thwart

Put away the 2 aluminium U-profiles in each opposite. At one end invest the bolt in the center on of the cross on top. Drill 2 holes throught the profiles and the bolt to fit out the M2 bolts. Do the same with the other M8 slapdash along the other side of the profiles. Place the Antenna in the tripod.

Antenna completed!

If you want you buns test your antenna by following this tutorial on rtl-sdr.com.

Stair 2: Fashioning the Twine Sensors

Speed

You stern find the parts and instructions in the pdf building take. Its made out of simple and common Lego bricks.

Once you finished building the Lego structure, solder two 110 cm long wires to the pins of the reed instrument switch. thread unitary of the wires through the thermionic tube unofficially of the air. You so bend the metal legs of the vibrating reed tack on top so it sits securely on top of the tube. Then glue the attractor along the bottom of one of the dishes so it barely touches the reed instrument switch. Whenever the magnet is above the reed switch the electric circuit should be closed. Test with a multimeter and refit if necessary. Attach the Lego shine with a wood nooky to the antenna.

Management

The direction sensor consists of a rotary encoder with a 3D printed scent out vane. The inventor and STL file are included here. Firmly press the vane on the axle of the cyclical encoder. Drill a 7 mm muddle in a moldable box and mount the rotary encoder thought it. The encoder comes with a nut that screws on top of the pliant box seat. Practice two wood screws to mount the box to unrivalled of the beams of the antenna.

Heat shrinks

Once mounted habit heat shrinks to neatly cover the wires. The duration has to personify 86 cm and the width has to be 2.5cm.

Step 3: Making the Enclosure for the SDR

For this cordiform natural enclosure you'll want to saw these plywood parts:

  • two 9.5x1.6 cm
  • two 9.5x4.2 cm
  • one 3x4.2 cm

Take same 9.5x1.6 piece and drill a 8mm gob for the receiver cable. This hole should be 1.8 Cm beneath the top

and 0.5 cm from the side (see delineation).

First glue and nail the side walls (9.5x.16 cm) to the bottom part (one of the 9.5x4.2 cm pieces). Then insert the SDR

and plug it through the hole in Delaware face bulwark. Close the enclosure with the last 9.5x4.2 cm part, the 3x4.2 cm goes happening top.

Step 4: Inclosure for the Raspberry Pi

Power Supply

Take the power supply pcb out of its casing. The capacitor shown in the picture is besides big to fit in the new example.

Desolder it and put back extensions (wire, old resistor legs,..). Solder the cap to those extensions and bend it so it fits tightly in the case. Solder the 5V and GND wires from the ability pcb to the pads along the PI (shown in pictures).

The tycoo cords fits through the hole in the type on the side of meat.

LCD

Cut a rectangular kettle of fish in the forepart lid. Hot glue the lcd to the internal making sure that the pins happening the LCD faces upward.

Solder female wires to the black pcb and plug them into the Pi. Remove the hole on the bottom left-of-center broadside and glue the Pi-buff to draw in air in from that hole.

DHT

Solder female jumper wires to the dht sensor and hype them into the Pi. Hot glue the sensor just below the Pi's ethernet porthole so the fan next to information technology blows strong ventilate over the sensor.

Step 5: Software

Github

Completely the software is available on Puke. Pretend sure you clone it in your Sherloc's home booklet

Personify the Initiatory to Share

Recommendations

  • Anything Goes Contest 2022

    Anything Goes Contest 2022