Rendering: 

Physical map

Test video (dual motor closed loop test)

Link to Station B: [No update for a long time! In fact, I don’t know how to cut videos. I plan to publish a tutorial in a few days to introduce the journey of making a self-made odrive (a guide to preventing pitfalls) (*∩_∩*)-Bilibili] https://b23.tv/CGeqhf

Project Introduction:

This project reconstructs the ODRIVE hardware and designs a small-sized, reasonably laid out ODRIVEFOC3.5 brushless motor controller. The cost is low (components + board printing (four-layer board) cost 200 oceans in total). The power dissipation resistor circuit is optimized, the CAN communication and USART serial communication interfaces are retained, and a 1.14' IPS screen and a custom button are added. The original connectors were changed from XH2.54 to compact GH1.25 and SH1.00 interfaces, the micro usb was replaced by a TYPE-C interface, and a CH340 serial port was integrated. Change the original 12 MOS tubes for each motor channel to 6 for each channel, and the overall size is 56.234mm , during which there was an explosion of capacitors, diodes and other components [laughing and crying]). The wiring is rather sloppy and will be further optimized in the future. Here again, I would like to thank the master@ambivalentpolymer for his help in this project!

expanding board:

The power dissipation resistor I used: 50W, 2Ω

Modification record:

1. (23:12 on February 10, 2021) Move the reset button to the top layer and fix bugs: Improve the AVCC circuit. Students who have cloned please download it again

2. (February 11, 2021 19:12) Move the AVCC circuit to the top layer and optimize some routing

3. (February 24, 2021, 19:12) Remove the RGB lights, add reset buttons, custom buttons and power dissipation resistor circuits, and optimize some wiring.

4. (April 7, 2021 00:07) Fixed a BUG: M1_SO1/M1_SO2 connection sequence is wrong

, I just fixed this bug in the software. I provided a firmware with a screen function that can be directly downloaded to the board.

5. (May 17, 2021 11:07) Some friends in the previously uploaded firmware said that the screen did not light up. Now I have uploaded a firmware with a screen that has no bugs and can be driven by dual motors. Friends in need can download it.

Kind tips:

Some friends who uploaded the firmware before said that the screen does not light up. Now I have uploaded a firmware with no bugs in the screen. I put the firmware with screen driver ( ODriveFirmware.hex ) in the attachment. This firmware also solves the problem of M1_SO1 mentioned above. /M1_SO2 connection sequence is wrong. If necessary, you can download it directly to perfectly adapt to this board. If you find it helpful, remember to give me a like!

Welcome to join the Lemon FOC driver communication group, group number: 237559791. If you have any questions, you can ask in the group

statement:

This item is not allowed to be sold on Xianyu or any platform without permission, unscrupulous merchants are BISS!