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Arduino sketch (.ino) file and libraries for the WiFi Water Tank Level Meter
A ZIP package download which includes the Arduino sketch and libraries needed for the Solar Powered WiFi Water Tank Level Meter and Weather Station.
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Small 2A boost step-up regulator module (MT3608)
A 36x17mm module which uses the MT3608 boost regulator IC. Input is 2-24V, output is 5-28V at up to 2A continuous.
Efficiency up to 93%, switching frequency 1.2MHz. Output voltage is adjusted using a multi-turn trimpot. The input and output DC connections are made via pads in the corner of the PCB.
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IPP80P03P4L-07 high-current P-channel Mosfet
A high-current P-channel Mosfet with low on-resistance in a standard TO-220 package. Note: package marking is '4P03L07'.
This is a faster switching, lower-cost version of the IPP80P03P4L-04 Mosfet that we also sell, but with slightly higher on-resistance.
Its critical specifications are:
Maximum drain-source voltage: 30V
Maximum gate-source voltage: +5V, -16V
Maximum continuous drain current: 80A
Maximum pulsed drain current: 320A
Maximum dissipation: 88W
Gate threshold voltage: 1-2V
On-resistance: 5.9mΩ
Input capacitance: 4.4nF
Output capacitance: 1.2nF
Reverse transfer capacitance: 30pF
While this is not a complementary type to the IPP80N06S4L-07 N-channel type we also sell, it is very well matched.
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IPP80P03P4L-04 high-current P-channel Mosfet
A high-current P-channel Mosfet with very low on-resistance in a standard TO-220 package. Note: package marking is '4P03L04'.
This is a lower on-resistance version of the IPP80P03P4L-04 Mosfet that we also sell, but with slightly slower switching and it costs a bit more.
Its critical specifications are:
Maximum drain-source voltage: 30V
Maximum gate-source voltage: +5V, -16V
Maximum continuous drain current: 80A
Maximum pulsed drain current: 320A
Maximum dissipation: 137W
Gate threshold voltage: 1-2V
On-resistance: 3.7mΩ
Input capacitance: 8.7nF
Output capacitance: 2.4nF
Reverse transfer capacitance: 65pF
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GY-68 Barometric Pressure/Altitude/Temperature I²C Sensor breakout board
A tiny breakout board with a BMP180 barometric pressure/altitude/temperature sensor plus a regulator and level shifter. Connects easily to an Arduino, Micromite, etc using the I²C bus via a standard 4-pin header. For more information, see the GY-68 and BMP180 data sheets.
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DHT22/AM2302 Compatible Temperature and Humidity sensor module
A DHT22/AM2302 or equivalent digital temperature and humidity sensor module, as described in the February 2017 "El Cheapo Electronic Modules" article.
If you're using this to build the Altimeter/Weather Station from December 2017, you will need a 1k resistor wired between pins 1 and 2 and a 100nF capacitor wired in series with pin 4; see errata.
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5dBi 2.4GHz WiFi antenna with U.FL/IPX adaptor cable
A 175mm-tall 2.4GHz black WiFi antenna with right-angle bending hinge, SMA plug and 5dBi gain (vertical polarisation).
Supplied with a matching chassis-mount SMA socket and attached 20cm cable terminated in a U.FL/IPX connector, as used on many WiFi devices.
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2dBi omnidirectional 2.4GHz WiFi antenna with U.FL/IPX adaptor cable
A 28mm-tall 2.4GHz black WiFi antenna with SMA plug and 2dBi gain (omnidirectional).
Supplied with a matching chassis-mount SMA socket and attached 10cm cable terminated in a U.FL/IPX connector, as used on many WiFi devices.
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Elecrow 1A/500mA Li-ion/LiPo charger board with USB power pass-through
A 46 x 32mm module with a micro-USB type B input port and a full-size USB type A output port, plus connections for a solar panel and Li-ion/LiPo cell.
For more details, see the article in the August 2017 issue titled "El Cheapo Modules: Li-ion & LiPo Chargers" (starting on page 44).
PLEASE NOTE: the red/black colour coding on the cables supplied MAY NOT match the polarity of the connectors on this module.
Incorporates an onboard step-up circuit to provide a regulated 5V output (at up to 500mA) from the cell, plus a 1A charger and automatic input-to-output pass-through. Supplied with three 2-wire JST 2.0 cables to connect the cell and output and optionally, a solar panel for charging. Also incorporates battery level indicator LEDs.
Note that the input and output USB socket data lines are not connected.
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WiFi Water Tank Level Meter shield PCB with stackable headers [21110171]
PCB for the Solar Powered WiFi Water Tank Level Meter and Weather Station shield.
Double-sided PCB with plated through holes, solder mask and silkscreen overlay. Included with the PCB are two 6-pin and two 8-pin stackable headers.
68.5 x 53.5mm.
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WiFi Water Tank Level Meter shield PCB pattern (PDF download) [21110171]
PDF with the PCB design of the shield for the WiFi Water Tank Level Meter.
The PCB design is double-sided and both layers are in the same PDF.
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