BTS6970 auf PCB1.3 - Hat wer Infos zur Verdrahtung?

[SefanH]

Meine MC33926 dual-Treiber sind defekt. Ersatz ist ja bekanntlich quasi nicht zu bekommen. Es sollen ja auch die BTS7960 funktionieren. Mit einem INA226.

Ich bräuchte da mal ein paar Infos drüber. @bernard hatte das einmal gemacht und die Teensymower laufen ja auch damit.

 

[bernard]

Meine MC33926 dual-Treiber sind defekt. Ersatz ist ja bekanntlich quasi nicht zu bekommen. Es sollen ja auch die BTS7960 funktionieren. Mit einem INA226.

Ich bräuchte da mal ein paar Infos drüber. @bernard hatte das einmal gemacht und die Teensymower laufen ja auch damit.

Yes BTS7960 are OK to replace MC33926, but no sense reading, so you need INA226.
If you really need MC33926, I can check if i have some of them that i don't use.

 

[SefanH]

I've already ordered some. It needs to be quick. It's the boss's mower.

Where does it need to be connected to the PCB1.3? Is there a wiring diagram?

Ideally, I should build an adapter board myself, right? Are there any photos or posts about that? I haven't found anything yet.

 

[AlexanderG]

There are still some dual MC33926 PCB's available (if it needs to be quick and without additional work... ):

Pololu Dual MC33926 Motor Driver Carrier

The dual MC33926 motor driver carrier is a breakout board featuring two Freescale MC33926 H-bridge ICs. It can supply up to almost 3 A continuous current per channel to two brushed DC motors at 5 ? 28 V, and it can tolerate peak currents up to 5 A per channel for a few seconds, making this a...

exp-tech.de

MC33926 - Zweikanal-Treiber für 28V / 2,5A-Motoren - Pololu 1213

MC33926 - Zweikanal-Motortreiber 28 V / 2,5 A - Pololu 1213 aus der Kategorie: Motor- und Servotreiber zum Kauf im Robotik-Shop von Botland erhältlich. Sehr schnelle Lieferung!

botland.de

 

[bernard]

I've already ordered some. It needs to be quick. It's the boss's mower.

Where does it need to be connected to the PCB1.3? Is there a wiring diagram?

Ideally, I should build an adapter board myself, right? Are there any photos or posts about that? I haven't found anything yet.

ROBOMOW RL1000 Rebuild

Hi. Here a PCB1.3,Pi zero,3.5 Inch Screen,Rfid reader Inside Robomow chassis. Only tested for 5 or 6 hours with no particular issue. The video test

forum.ardumower.de

 

[SefanH]

Can this also work with the wheel motors? I don't quite understand how the direction switching is supposed to work.

 

[bernard]

Can this also work with the wheel motors? I don't quite understand how the direction switching is supposed to work.

NO. direction is not manage on the same process than the MC33926

For reverse you need to send PWM signal on the reverse pin of the driver.
So one PWM pin for forward and other for reverse.

You need some change into sunray code.
If you need help to write driver ,you can take a look at my teensy part (search for BTS7960) , but can't work on PCB1.3

GitHub - Boilevin/Sunray_TeensyPcb: sunray code for teensy PCB

sunray code for teensy PCB. Contribute to Boilevin/Sunray_TeensyPcb development by creating an account on GitHub.

github.com