October 2023

Martin:

-a mini UPS box he bought from tokopedia for AUD10. It provides 12V and has 4 Li-ion batteries, BMS, step-up converter, and battery level display.

-use of a Sensirion SGP30 Indoor Air Quality Sensor for TVOC and CO2eq Measurements. The output is fed into Influxdb and Grafana and the resulting values charted over 24 hours. 

-a diy helicopter control stick and pedal based on Douglas Stanton design. Istvan provided the mechanical construction while Martin handled the electronics and software. The flight software is Flightgear.

Alex:

-desoldering 2 Winbond SPI flash chips from an inkjet printer PCB.

-Programming the 128-Mbits flash chip with an Arduino Nano using the SPIMemory and SerialFlash libraries.

Andrew:

-an experimental PIC12 sensor controller board built with veroboard. It has a bus interface with Gnd,VCC,data lines. The data communications is 9600 baud serial with time division multiplexing for handling up to 8 sensors.

Lino:

-showed repairs to an infrared remote controller by cannibalising parts from another controller.

-a front panel for an enclosure made with paper. The design is printed on an inkjet and then laminated. It's mounted on box cover using contact adhesive.

If you are reading this message, send an email to sgobrien8@gmail.com to claim a prize.