|Firmware (HEX) and BASIC source code for the Touchscreen Altimeter/Weather Station|
Software for the Touchscreen Altimeter, including BASIC source code and a HEX file which includes the Micromite firmware.
Note that this software has been updated (since the article was published) to include the ability to key in QNH pressure updates.
We have also made the original (pre-QNH) source code available for download for readers who are intersted.
|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.
|DHT22/AM2302 Temperature and Humidity sensor module|
A DHT22/AM2302 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.
|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.
|5V 0.8W 160mA solar panel|
Panel type: Monocrystalline silicon
Dimensions: 99 x 69mm
Open circuit voltage: ~6V
Full load voltage: ~5V
Connections: two solder pads on the underside of the panel
|PIC32MX170F256B-50I/SP programmed for the Touchscreen Altimeter/Weather Station|
A 32-bit PIC microcontroller in 28-pin DIP programmed for the Touchscreen Altimeter/Weather Station. This includes the Micromite software as well as the TFT LCD configuration, with the Altimeter BASIC program pre-loaded.
|Altimeter/Weather Station front panel artwork (PDF download)|
A PDF with the front panel artwork for the Altimeter and Weather Station. Drilling templates are also supplied, in a separate PDF.
|Micromite LCD BackPack V2 complete kit|
A kit of all the parts required to build the revised version of the Micromite LCD BackPack.
PLEASE NOTE: the 10µF capacitors supplied are either non-polarised SMD or through-hole ceramic types. They have no markings and can be installed either way around.
The PCBs, programmed microcontrollers and regulator are also available separately. For assembly instructions, see the article in the May 2017 issue.