I built a chassis over the weekend.

ROychen

I built a chassis over the weekend. [Copy link]

 I had more time on weekends, so I mainly did some handicrafts. I haven't done it for a long time. It's too troublesome. I would have bought one from Taobao earlier. Finally, I connected it to the computer and shook the chassis back and forth. I found that the sitting direction was on the Y axis, but the acceleration direction was on the X axis. It seems that this project has been studied. Things that have not been experienced are quite magical. Later, Baidu had already found other people's algorithms. At the same time, I have not found the interface that this development board can communicate directly with other development boards. Or is it hidden in the documents I haven't found? So should I program on the development board or use an external control board? Anyone with experience can help me with some tips.

ROychen

By the way, the two batteries are connected in series, without any equalizer board or anything, just connect to the charging port separately, and use two chargers when charging. Let's do it this way for now. I will improve it later when I have the chance to buy materials.

justd0

The MKI109V3 development board is designed to collect and debug ST sensor modules, and its firmware is closed source. However, its serial communication protocol with the host computer Unico is relatively simple. After analysis, you can write the interaction logic in the serial port mode to read data, but this is a bit of a loss.

The MKI197V1 module on the MKI109V3 communicates via IIC. You can directly take it off and make a mainboard to read it yourself. This communication process can be used as a reference.

However, are you going to make a self-balancing car? The main functions of the LSM6DSOX chip are the finite state machine and machine learning module, which means that it can directly analyze specific behaviors based on the gyroscope and accelerometer data internally and output them to the main device to reduce the main device's additional calculations. If you are going to make a self-balancing car, it's a bit of a waste of resources.

UUC

Pretend to understand, give a thumbs up!

dcexpert

Using TP5100, you can charge two batteries in series, which is more convenient than using two charging modules.

qwqwqw2088

This balance car only needs 2 batteries, like 18650

ligl

DIY spirit  

Ansersion

UUC posted on 2020-4-27 08:08 Pretend to understand, like it!

I really don't understand, but I support it.

TL-LED

DIY equipment is good