This Repository is dedicated to mods for the Jetson Bolt Pro. At the moment the only completed mod is speedhack.

Demo of speedhack: https://www.youtube.com/watch?v=HBDkVcntbl0

In the Testing folder "Jetson-Read-Controller-Status.ino" is a partially working information display with Speed, temp, odometer, etc. (More details below in "OTHER MODS" section)

Demo of speedometer: https://www.youtube.com/watch?v=8d0KWAItMqg

Credit and thanks goes to NTWM420 on reddit for letting me meet up with them and tinker with their original Jetson bluetooth module. He is a nice guy that wants to help everyone that owns this bike.

If you have technical know-how and just want to send commands serially yourself. Baud rate: 115200, TX the HEX message on the Grey wire: aa06061eb4bb

Otherwise, if you didn't understand that keep reading...

https://www.youtube.com/watch?v=HBDkVcntbl0

If you're just here for the speed hack download JetsonSpeedHack.ino and follow the instructions below

1. An Arduino
2. Breadboard dupont connectors - to connect the Arduino to Jetson Bolt Pro
3. The code found in this repo: JetsonSpeedHack.ino

You CANNOT use the DSD TECH HM-10 from Amazon BY DEFAULT. The default baud rate is 9600 and the only way to activate Baud rate 115200 is to first send it an AT command: AT+BAUD4 via a computer using an arduino or other serial comm device. You can also set AT+MODE2 via an arduino/serial comm and this will let you send AT commands directly from the phone via bluetooth to use the device with less limitation.

You might as well just buy an arduino and skip the HM-10.

Everything in this program is DO AT YOUR OWN RISK and for educational purposes ONLY. It may not be legal to ride in your city/state/country with the use of a speedhack setting higher than factory.

These bikes ship with a speed setting at 15 mph, and using the official Ride Jetson app 19 mph is the highest setting. This is considered "Safe" by the community of those who have already done this speedhack using the genuine Bluetooth module from the Jetson Bolt (Non-Pro) model.

1. Enter a value for TARGET_SPEED_MPH: 3 mph to 19 mph.

2. Upload the program your arduino board.

3. With the Jetson Bolt Pro OFF, and recommended 36v battery disconnected: Connect the following pins using the breadboard dupont connectors - They fit right into the Jetson connector

   ARDUINO PIN	WIRE	JETSON BOLT PRO CONNECTOR
   GND	<--connect to-->	BLACK Wire
   DIGITAL 3	<--connect to-->	GREY Wire
   5V	<--connect to-->	ORANGE Wire

4. Connect 36v battery and power the Jetson Bolt Pro ON

5. The headlight will flash twice indicating Speed hack is complete. For good measure.. while everything is still connected you can press the reset button on the arduino which will run the program once more - just to be sure.

Per the "Ride Jetson" App for Android, the minimum speed is 3 mph (5 km/h) and the maximum speed is 19 mph (30 km/h) [really it's 18.6 mph rounded up since calculation is from km]. These are the settings that we know will work and is considered "SAFE"

That said, the speed can be increased further above 19 mph (30 km/h) if you're feeling frisky.. however it is unknown what this will result in. This means DO IT AT YOUR OWN RISK - only if you know what you are doing. Setting the speed higher MAY result in hotter motor/controller tempuratures, higher Amps pumped through the controller and battery. Damage may be done to Motor, Controller, and or Battery

...OR, and this is probably the case... the controller may have auto-shutdown proterctions built in which prevent too many Amps, too hot motor temp, controller temp, etc.

If you accept these risks: To increase speed higher, change TARGET_SPEED_MPH to a value higher than 19. Next change the below from

                     AGREE_TO_TERMS false -> AGREE_TO_TERMS true

This will unlock the protection built into the Arduino program which prevents running higher than 19 mph (30 kmph, which is really 18.6 mph)

https://www.youtube.com/watch?v=8d0KWAItMqg

In the future if time permits, would like to add a Jetson Bolt Pro speedometer which includes adjustable max speed on the fly, 1-click headlight on/off, Temperature, Voltage, Current, ODO, Ride Time display, etc. That project is located in Testing/Jetson-Read-Controller-Status.ino which just reads commands from the Jetson Bolt Pro controller. But the Jetson sends messages from Registers: A1 A2, A3, A4, A7...

The controller constantly transmits 10-Bytes via serial 115200 BAUD.

aa: Start transmission [Always aa]

a#: Register #

0a: Number of bytes for the whole message [Always 0a ??]

data: The data in the register, Byte# 4-8

checksum: The checksum - which is an 8-Bit Checksum Xor (including the first byte "aa")

bb End transmission [Always bb]

All those without 'XX' are currently unknown

UNTESTED - Walk Mode on/off: On: aa050601a8bb | Off: aa050600a9bb

Maximum Speed: aa0606YYZZbb - Where YY is the speed in KM and ZZ is the checksum

Switch headlight on/off: On: aa070601aabb | Off: aa070600abbb

UNTESTED - Zero Start on/off: On: aa120600bebb | Off: aa120601bfbb

UNTESTED - Unlock command (default password 000000): aa160b303030303030b7bb

aa: Start transmission

Var: Variable to change

#Bytes Number of bytes for the whole message

data: New value of variable

checksum: Checksum

bb: End transmission