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mattallen1987 does this perform signal for 433mhz ? cheers

grizewald 26/12/2020
A handy little device which delivers what it promises. Thanks to the manufacturer for making the source code for the firmware available. The source is provided in a Keil MDK4/5 project, which can be a problem as Keil is not free for the Cortex-M3 series. I managed to convert the project so that I could compile and flash it on Linux using the gcc ARM cross-compiler tools, a simple make file and a USB ST-Link v2 tool from Banggood (See: https://www.banggood.com/Geekcreit-3_3V-5V-XTW-ST-LINK-V2-STM8-STM32-Simulator-Programmer-Downloader-Debugger-500MA-Fuse-Short-Circuit-Protection-Aluminum-Alloy-U-Disk-Shell-With-20cm-Dupont-Wire-p-1177014.html). The first thing I will be changing is that as soon as you turn the device on, the RF output is immediately enabled and at full power! If you have not fitted terminators or a load to the two output sockets, you risk damaging the synthesiser as soon as you apply power. It is probably also worth pointing out that the two output SMA connectors are the same output channel, just the + and - sides of a differential output. So, if you only use one half of the differential output, you must terminate the other one. If you don't, the reflected power from the non-terminated side will cause harmonics, spurs and quite possibly damage the output amplifier on the synthesiser chip as well. So, apart from the firmware setting up any RF novice to kill the output amp, it's a useful board. The fact that you have the firmware source so that you can change how it works is what stopped me from taking two stars for starting with RF output on at maximum power when you power up the board. More boards which come with source code for the firmware please Banggood!
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mattallen1987 I can't even get mine to work with my raspberry pie 4.

2021-03-24 01:57:58 Helpful (0)
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Q: where can you get spare arms

Asked by mattallen1987 on 2020-09-20 10:14:41

Vitalized Sorry, at present, don't have plan to sell replace arm for this frame kit

2020-10-09 06:25:53 Helpful (0)
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Bowstring Can not get your pionts very well. If you use ibus receiver, short solder ibus sbus pad like the diagram picture showed, and 5V , GND would ok

2020-09-04 05:57:32 Helpful (0)
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