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ESP32 Port of B-Robot_EVO2 Code
01-17-2018, 08:14 PM
Post: #11
RE: ESP32 Port of B-Robot_EVO2 Code
(01-17-2018 03:00 PM)mou Wrote:  great. I want a circuit diagram ...Blush

You could start with the circuit diagram from the original so-called brain shield:
http://forums.jjrobots.com/attachment.php?aid=244
Wrip off Arduino and Wifi Module and adopt the rest to the ESP32 board you're going to use. For connecting components like stepper drivers and IMU you could orient yourself on the pin descriptions mentioned on my GitHub page.

Important note: Meanwhile I learned from others rebuilding the bot, that recent updates of arduino-esp32 broke the I2C subsystem at least rendering the IMU connection useless since it will fail after a few seconds uptime. Workaround: Use this version of arduino-esp32 for the robot:
https://github.com/espressif/arduino-esp...7917e0309c

Best regards,
ghmartin77
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01-20-2018, 10:51 AM
Post: #12
RE: ESP32 Port of B-Robot_EVO2 Code
Thank you for your kindness.Big Grin
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01-20-2018, 05:33 PM
Post: #13
RE: ESP32 Port of B-Robot_EVO2 Code
Hi,
I created a wiring diagram and build a robot. The ESP32 is driven by 5V.

Please note that I use DRV8825 stepper driver. To configure 1/16 micro steps the wiring is different than with A4988.

Good luck!
cu
neunmann

   
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02-09-2018, 11:58 AM
Post: #14
RE: ESP32 Port of B-Robot_EVO2 Code
When the robot is powered on, it operates normally. However, when the WiFi is connected, the motor is not powered and may fall. esp32 uses Goouuu-esp32. Thank you!
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