Project Logs

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• The schematic and PCB now on easyeda.

  deluxe87 • 05/04/2022 at 14:25 • 0 comments

  It's in development stage now. https://oshwlab.com/deluxe87d/neurodrive

• Turning on

  deluxe87 • 10/04/2021 at 23:18 • 0 comments

  Finally I made a first power up and actual muscle check. And surprisingly it was successful. It's only 24 volts mode but still you can feel a little stimulation on your hand

• easyEda schematic started

  deluxe87 • 08/02/2021 at 16:02 • 0 comments

  I started to draw schematic and pcb in easyEDA.  Now it's almost empty, but i hove it will be completely full of data in a few weeks.  So here is the link to the project  https://oshwlab.com/deluxe87d/neurodrive

• High voltage pcb update

  deluxe87 • 07/16/2021 at 10:35 • 0 comments

  I almost finished second PCB with H bridge, and high voltage converter, you can see it on the photo. I use chinese accumulator board in my design. I hope I will finish it in couple of weeks. See ya! 

• Update summer 2021

  deluxe87 • 06/18/2021 at 09:26 • 0 comments

  UPD: summer 2021. 

  So now it works more or less. I figured it out how to get a proper PWM signal out of ESP32. There was a mistake on last post where I wanted to use a complement PWM. The algorytm is mush simpler, I just need one PWM channel and second simple polarity switch channel. 

  The high voltage and power pcb will be ready in couple of days, and after that I'll be ready to work on software part 

• PWM difficulties

  deluxe87 • 12/10/2020 at 12:12 • 0 comments

  Now I stuck with PWM generation on ESP32.  I need to generete a complementary or inverted PWM in order to drive H-bridge. I've already got that i need to use mcpwm module inside esp32, but i can't figure out what settings i should use. 

  As fa as i get it I should use 2 operators, for example operator - 0 and operator 1, and take one signal from PWM0A and another signal from PWM1A. Or maybe I'm wrong. Hope I will find it on this weekend.

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