STM32F042 Dev Board

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parkview
Master Maker
Posts: 425
Joined: Tue Jun 24, 2014 8:25 pm
Location: Busselton
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STM32F042 Dev Board

Post by parkview » Mon Jan 27, 2020 10:06 pm

I went looking for a STM32F042F4P6 dev board on Aliexpress yesterday. Such a thing doesn't exist!! There is the poor cousin, the STM32F030, but that's it. This afternoons project was to whip one up:
STM32F042F4P6 PCB V1.0.jpg
STM32F042F4P6 PCB V1.0.jpg (172.56 KiB) Viewed 572 times
Not much to it, just the basics plus a DIP switch and a LED etc. It's only 40mm x 22.5mm, so I had to place some hand soldered components on the other side to make it all fit:
circuit diagram V1.0_mini.jpg
circuit diagram V1.0_mini.jpg (78.67 KiB) Viewed 572 times

There are eight to a panel and it's around A$12.50 for JLCPCB to produce five panels, so thats 40 small Dev boards I could make up. See you again in 3-4 weeks time.

parkview
Master Maker
Posts: 425
Joined: Tue Jun 24, 2014 8:25 pm
Location: Busselton
Contact:

Re: STM32F042 Dev Board

Post by parkview » Mon Mar 09, 2020 12:08 pm

The STM32F042 TSS0-20 pin panellized dev boards arrived back the other day:
stm32F042_Panel.jpg
stm32F042_Panel.jpg (115.72 KiB) Viewed 407 times

As I only have one STM32F042 IC left (more on order), I decided to hand solder the few components onto the board. I started off using some 0.3mm solder, but even though it says it's 63%Sn/37%Pb, it doesn't solder very will at my normal 315deg.C iron temperature. I had to change over to my 35 yo 0.8mm thick solder. It work straight off the bat, and I loaded it up via Visual Studio Code/PlatformIO with an edited version of my Digital Candle code, so the blue User LED has a lovely flicker to it:
STM32F042 Dev Board.jpg
STM32F042 Dev Board.jpg (47.38 KiB) Viewed 407 times

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