open Tx on STM32F103C8T6 dev board ?

Cant get your radio to work? General Hardware issues?
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ak9108
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open Tx on STM32F103C8T6 dev board ?

Post by ak9108 »

Hi,

i was wanting to build a cheap open Tx transmitter . Making one using the atmega 2560, does not appeal to me much as the processor seems too slow in comparison to the cheaper STM32F103C8T6 blue pill dev board offering much more ADC resolution. 8-ch radio transmitter built with it would be more than enough.

Has anyone tried it on STM32F103C8T6 (blue pill dev board).

i am new to this, so any help or leads would be of great help.

Thanks!

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Kilrah
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Re: open Tx on STM32F103C8T6 dev board ?

Post by Kilrah »

OpenTX currently runs on F2s and F4s, no F1s since they don't have enough memory. You'd have to adapt all the HAL, not to mention trimming out a bunch of features until you managed to get low enough memory footprint if possible at all.
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MikeB
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Re: open Tx on STM32F103C8T6 dev board ?

Post by MikeB »

I have erskyTx running on a F1 processor, but one that has 512k of flash, although it would fit in 256k I think.

Mike
erskyTx/er9x developer
The difficult we do immediately,
The impossible takes a little longer!
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Kilrah
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Re: open Tx on STM32F103C8T6 dev board ?

Post by Kilrah »

Oh, didn't know they even made F1s that big!
256 should just about work on OpenTX if you strip some stuff like lua, maybe audio SD and the splash screen... Standard build with all the bells and whistles is 450K

Some people have used the STM32F4Discovery AFAIK.

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