Best robot parts according to redditors

Hello :-)

You can use a simple (leaver) switch when it bumps into something (or indeed use the flex sensor), but better would be a ultra-sonic sensor ($1 at Aliexpress or eBay, $5 at Amazon). Another method is something like a tcrt5000 infrared distance sensor, but it's vulnerable to ambient light. You could do this with the photocell as well (or line tracking).

• http://www.ebay.com/itm/Ultrasonic-Sensor-Module-HC-SR04-Distance-Measuring-Sensor-for-arduino-DE-/172138007056?hash=item2814398a10:g:TRUAAOSwxp9W66st
  
  
• https://aliexpress.com/item/Free-shipping-1pcs-Ultrasonic-Module-HC-SR04-Distance-Measuring-Transducer-Sensor-for-Arduino-Samples-Best/1872588324.html?spm=2114.010208.3.134.m847tO&ws_ab_test=searchweb0_0,searchweb201602_2_10065_10000073_10068_10000074_10000032_119_10000030_10000026_10000023_431_10000069_10000068_10060_10062_10056_10055_10000062_10054_10000063_301_10059_10099_10000020_10000013_10103_10102_10000016_10101_10096_10000056_10000059_10052_10053_10107_10050_10106_10051_10000097_10000094_10000053_10000007_10000050_10084_10083_10000100_10080_10000047_10082_10081_10110_10111_10112_10113_10114_10115_10000041_10000044_10078_10079_10000038_10073_10000035_10122_10123_10121_10124,searchweb201603_2,afswitch_3,ppcSwitch_5,single_sort_2_price_asc&btsid=6238d8bf-526f-46eb-b73a-a458a2d86108
  
  
  
• https://www.amazon.com/HC-SR04-Ultrasonic-Sensor-2-Pack/dp/B01N391SE1/ref=sr_1_1?ie=UTF8&qid=1487180048&sr=8-1-spons&keywords=hc-sr04&psc=1
  
  Also ad a $1 9g servo to pan the sensor :-)
  
  What parts do you have besides the kit?

If you want to use any custom firmware then don't upgrade. The latest upgrades encrypts the bluetooth which makes 3rd party apps and firmware flashing impossible.

DRV 155 is fine but as its a clone board BMS and BLE have to be flashed using the ST-Link method.

The documents say soldering but there is no need if you buy some pins for the ST-Link as clone motherboards have holes for the pins so that they are easy to flash.

Get ST-Link Get Pins

Put pins in ST-Link connectors

Plug ST-LINK into PC, set up ST-Link drivers and software

Download firmware needed to PC

Plug ST-Link leads into the correct holes on the clone board

Run the ST-Link software to flash the board

Done


Details are here for the whole thing including great firmware for heavier guys or for people faced with hills. Its the V9 firmware at the bottom of the page:
https://rollerplausch.fandom.com/de/wiki/Pro_Dashboard_und_CFW_Installation

Here is the link for flashing the board with an ST-Link (follow the Pro guide):
https://www.instructables.com/id/Firmware-Downgrade-M365/

And here is a link to a guy who did what I did
https://scootertalk.org/viewtopic.php?t=2600

Here is the ST-Link I used
https://www.amazon.co.uk/gp/product/B079128QP1/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1

And here are the pins I used
https://www.amazon.co.uk/gp/product/B077MJKCVT/ref=ppx_yo_dt_b_asin_title_o05_s01?ie=UTF8&psc=1

Good luck if you use the CW Firmware hills are a problem no more!