Sl-Alex home lab

hardware

GPS clock

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Projects

Translation: RU

About two years ago I decided to make something based on LED matrices. A bit later I bought a pretty cheap GPS module. That was the start of the GPS wall clock development. This clock does not have any buttons and does not require any settings. Time zone and automatic DST correction are should be defined just once, before the flashing. After that you just power it on and it works. In addition to the time you can see current temperature, humidity and pressure diagram. Display brightness automatically adjusts according to the information from the light sensor.

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Kicad - preparing a PCB for Seeed Studio

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Notes

Translation: RU

When I was busy with one of my projects, I decided to make a PCB. You can say that I could use a breadboard, but I had to make a lot of boards and I didn't want to spend a lot of time with the soldering iron, so my decision was quite predictable: I decided to order a PCB from the factory and place the order at the pretty famous chinese Seeed Studio and I wasn't disappointed with the result. It was pretty easy to prepare the files for the production and place the order.

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USB<=>UART/I²C/SPI/GPIO adapter

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Notes

Translation: RU

Accidentally I found one pretty interesting chip from FTDI: FT4232HL. This manufacturer is quite well known by it's USB<=>Serial solutions and their "driver" war against chinese clones. Nevertheless, this problem has a solution, so I will not go into the details.

FT4232HL is a 4-channel USB<=>Serial converter, which also supports I²C, GPIO and SPI modes. These features are the subject of the separate article, by default device works in the USB<=>Serial mode, which is more than enough for me.

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