I drew a draft of the micro-bit

蓝雨夜

I drew a draft of the micro-bit [Copy link]

 

I drew a draft of the micro-bit. I don't want the original gold finger. I just want the 100mil spacing of the headers! 51822 parts directly use the ready-made modules! This content is created by EEWORLD forum user Blue Rain Night. If you need to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the source

qwqwqw2088

The socket is well connected and the wireless module is a stamp hole.

ouger

Can you share the design files? I am also making a compatible board and I have some problems with the MKL26Z emulator.

蓝雨夜

ouger posted on 2020-3-19 12:14 Can the master share the design file? I am also making a compatible board and I have some problems with the mkl26z emulator part

The schematic diagram is the same as the official one downloaded

The layout is different

ouger

Blue Rain Night posted on 2020-3-19 12:40 The schematic diagram is the same as the official one downloaded, but the layout is different

The official RESET seems to only reset the 51822 micro:bit. The actual board seems to have both sides connected.

蓝雨夜

ouger posted on 2020-3-19 12:58 The official RESET seems to only restart the 51822 micro:bit. The actual board seems to be connected on both sides

Yes, only reset 51822 but not mkl26z

The usage is still the same, but if you need to update the firmware of mkl26z, you need to manually reset mkl26z

ouger

Blue Rain Night posted on 2020-3-19 13:05 Yes, if you only reset 51822 but not MKL26Z, the usage is still the same. If you need to update the firmware of MKL26Z, you need to manually reset MKL26Z...

OK, I got it = = I tested it with a multimeter

I have another question. There are two crystal oscillators in the 51822 schematic diagram, but the micro:bit only uses one. Is there any difference? Do I need to remove one like the micro:bit? How should I deal with the circuit?

蓝雨夜

ouger posted on 2020-3-19 13:14 OK, I understand = = I tested it with a multimeter. There is still a small problem. 51822 There are two crystals on the schematic diagram...

The published schematics use off-the-shelf modules.

ouger

Blue Rain Night published on 2020-3-19 13:21 The schematic diagram published uses a ready-made module

Well, I don't have the finished product = =

ouger

Master, I have another question. What model of gyroscope are you using? Is it compatible with the original version? Can I directly use the Microsoft web programming driver?

蓝雨夜

ouger posted on 2020-3-25 09:50 Great Master, I have another question. What model of gyroscope are you using? Is it compatible with the original version? Can it be directly driven by Microsoft's web programming?

The model is the improved model of the original

ouger

Blue Rain Night published on 2020-3-25 10:05 The model is the improved model of the original version

LSM303AGR This is good