fixed some formatting problems
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@ -54,6 +54,7 @@ Assemble the chassis according to the instructions provided by adafruit ([see he
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#### Connecting battery shield and motor shield for motor power supply
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#### Connecting battery shield and motor shield for motor power supply
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In the next step we connect the battery connector pins of the battery shield to the + and - pins of the motor shield. In addition we will add a connector to the motor shield where we can plug in the battery. Here is a schematic:
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In the next step we connect the battery connector pins of the battery shield to the + and - pins of the motor shield. In addition we will add a connector to the motor shield where we can plug in the battery. Here is a schematic:
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*Note: I added a new connector instead of using the one already on the battery shield because the plug of my battery wouldn't fit in the on on the shield*
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*Note: I added a new connector instead of using the one already on the battery shield because the plug of my battery wouldn't fit in the on on the shield*
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- First, solder two wires to the + and - pins of the battery shield and isolate them with heat shrink:
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- First, solder two wires to the + and - pins of the battery shield and isolate them with heat shrink:
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@ -1,6 +1,5 @@
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# Motor shield fix
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# Motor shield fix
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### Get motor shield firmware
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The Wemos motor shield comes with a buggy firmware which has problems with the I2C communication ([see here]([buggy firmware](https://hackaday.io/project/18439-motor-shield-reprogramming))).
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The Wemos motor shield comes with a buggy firmware which has problems with the I2C communication ([see here]([buggy firmware](https://hackaday.io/project/18439-motor-shield-reprogramming))).
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Luckily, some guys figured out how to update the firmware of the STM32 on the motor shield with a custom one that fixes these issues.
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Luckily, some guys figured out how to update the firmware of the STM32 on the motor shield with a custom one that fixes these issues.
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@ -16,7 +16,8 @@ $ esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=detect 0
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```
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```
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### Communicating with the D1 mini
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### Communicating with the D1 mini
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After flashing the firmware we can access the python prompt on the microcontroller using a serial communication program such as picocom
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After flashing the firmware we can access the python prompt on the microcontroller using a serial communication program such as picocom.
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On Ubuntu you can install this with
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On Ubuntu you can install this with
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```
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```
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$ sudo apt-get install picocom
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$ sudo apt-get install picocom
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@ -52,8 +53,11 @@ First we enable WebREPL on the microcontroller which allows us to easily upload
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Join the same WiFi network with your PC (either the access point or the local network) and connect to the D1 mini via the [online WebREPL](http://micropython.org/webrepl):
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Join the same WiFi network with your PC (either the access point or the local network) and connect to the D1 mini via the [online WebREPL](http://micropython.org/webrepl):
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Enter IP from above and click connect. Login with the password you set for the WebREPL.
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Enter IP from above and click connect. Login with the password you set for the WebREPL.
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### Making settings permanent
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### Making settings permanent
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@ -71,8 +75,10 @@ dns = '192.168.1.1'
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# TODO end edit
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# TODO end edit
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```
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```
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- Upload boot.py via WebREPL
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- Upload boot.py via WebREPL
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- Now the robot will automatically connect to WiFi network you set and start a WebREPL server after reboot.
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- Now the robot will automatically connect to WiFi network you set and start a WebREPL server after reboot.
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*Note: If the WiFi network cannot be found the microcontroller will instead open an access point.*
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*Note: If the WiFi network cannot be found the microcontroller will instead open an access point.*
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### Upload robot firmware
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### Upload robot firmware
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@ -118,13 +124,16 @@ Have a look at the `keyboard_controller.py` script to see how this works in pyth
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### Isolating the electronics
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### Isolating the electronics
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Since the mounting plates of the robot are made of metal it is a good idea to put some isolation around the electronics. You can use some isolation tape to cover the exposed connections:
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Since the mounting plates of the robot are made of metal it is a good idea to put some isolation around the electronics. You can use some isolation tape to cover the exposed connections:
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You can also add some velcro tape to the electronics, the battery and the robot to easily attach and remove the microcontroller from the robot.
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You can also add some velcro tape to the electronics, the battery and the robot to easily attach and remove the microcontroller from the robot.
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### Charging the battery
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### Charging the battery
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In order to charge the battery of the robot just plug a micro USB cable into the USB port of the battery shield.
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In order to charge the battery of the robot just plug a micro USB cable into the USB port of the battery shield.
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### Next steps
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### Next steps
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