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tinyidiot [2018/12/19 12:31] – yair | tinyidiot [2019/01/09 15:48] – [drv8830] -removed i2c yair | ||
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tinytony for esp8266 | tinytony for esp8266 | ||
- | drv8830 [[http:// | ||
- | built of work by sparkfun minimoto breakout [[https:// | ||
+ | {{: | ||
- | {{:pasted:20181219-102721.png? | + | ==== drv8833 === |
- | + | https:// | |
- | ## | + | |
- | | + | {{:pasted:20181226-125449.png}} |
- | GPIO 4 | SDA | + | |
- | GPIO 5 | SCL | + | |
- | | + | ==== code ==== |
- | | + | https:// |
+ | |||
+ | |||
+ | ===i2c issues== | ||
+ | |||
+ | cant get any other address to motors but 0x64 | ||
+ | |||
+ | #define PIN_WIRE_SDA (4) | ||
+ | #define PIN_WIRE_SCL (5) | ||
- | * **connect to the ESP only with I2C pulled up with 3.3v.** | ||
- | * Motor (+) and OUT1, motor (-) and OUT2 | ||
- | * A 1 nF ceramic capacitor between + and - of the motor | ||
- | * A resistance of 0.2 Ω between ISENSE and GND of the DRV 8830 | ||
- | * 0.1 μF ceramic capacitor between VCC and GND of the DRV 8830 | ||
- | * A 10 kΩ resistor between SDA and 3.3 v | ||
- | * A 10 kΩ resistor between SCL and 3.3 v | ||
- | * 5 V output such as USB serial and VIN of ESP - WROOM - 02 board | ||
- | * GND of USB serial etc. and GND of ESP - WROOM - 02 board |