Settings
Settings are changed on the Resolve Display page of resolve-ev.com, over USB. The display saves them and keeps them through firmware updates.
Connecting
You need desktop Chrome or Edge (they support Web Serial; Safari, Firefox and phones do not) and a USB-C cable that carries data.
- Plug the display into the computer. USB powers it; 12 V is not needed.
- Open the Resolve Display page and click Connect.
- Pick USB JTAG/serial debug unit in the browser's list.
While connected the display stays on. Changes show on the display as you make them and are saved a moment later. Click Disconnect when done, or just unplug.
General
| Setting | What it does |
|---|---|
| HW version | The display's hardware version, e.g. R0002 |
| FW version | The firmware on the display, whether an update is available, and Flash to install one (Firmware updates) |
| Restarts | Restarts the display did not expect (a crash or a power drop). If there are any, please tell us what it says. Clear resets the count |
| Display brightness | 0–100 %, the whole screen (Brightness and night driving). Set here only: tapping the screen does not change it |
| Ignition source | CAN signal (Display on) or Ignition wire (pin 7) (called IN_1 in earlier firmware): what turns the display on (Installation) |
| Display on CAN signal | With the CAN ignition source: the CAN signal that turns the display on. Default: the Resolve Controller's "system on" (0x539, bit 16); change it for another controller (Installation) |
| Detail color | Every white detail on every screen: text, numbers, rails, scale marks and outlines. A grey here dims all of them at once, while the coloured bars stay as bright as they are (Brightness and night driving). Reset goes back to white |
| Mode | Standard, G-force meter or Power graph (Screens). The settings below it change with the mode |
Brightness and night driving
Two settings decide how bright the display is.
Display brightness turns the whole screen up or down, everything on it equally. 100 % is right for daylight; in the dark 25–50 % is usually enough. It is set on the Resolve Display page only: tapping the screen does not change it.
Detail color lets you go further at night without losing the colours. The display is an AMOLED: every pixel makes its own light, and white pixels are the brightest there are. Most of a screen's light comes from its white details: the numbers, the text, the rails and the scale marks. Make the Detail color grey instead of white and all of those give off less light, while the coloured bars (state of charge, torque, regen, G-force) keep their full colour and stay easy to see. Black stays black, so the screen around them doesn't glow.
| Detail color | Effect |
|---|---|
| White (default, Reset) | Brightest; best in daylight |
Light grey, e.g. #B4B4B4 | About half the light from the details; still crisp |
Mid grey, e.g. #808080 | About a fifth; a good night setting |
Dark grey, e.g. #5A5A5A | About a tenth: very calm on a dark road; check the numbers are still readable |
A good start for night driving: Display brightness 50 % and a mid grey Detail color. The darker the grey, the less the details stand out, so check that you can still read the numbers at a glance from your seat. Coloured parts have their own colour settings below: a darker colour there dims that part too.
The display keeps both settings through restarts and firmware updates.
Standard
| Setting | Default | What it does |
|---|---|---|
| Left gauge | Temperature | Motor temperature or the 12 V battery on the left gauge |
| SOC bar color | green | The state-of-charge ring |
| Torque and power bar color | orange | The torque bar (driving) and the kW bar (charging) |
| Regen bar color | teal | The torque bar while regenerating |
| Temperature needle color | light blue | The temperature needle |
| 12V needle color | white | The 12 V needle |
| Temperature unit | Celsius | Celsius or Fahrenheit |
G-force meter
| Setting | Default | What it does |
|---|---|---|
| G-force bar color | yellow | Lit segments, the zero box and the "0" labels |
| Peak marker color | red | The peak markers |
| G-force scale | 1 G | Full scale: 1, 2 or 3 G |
Level the G-force meter. With the display mounted and the car standing still on level ground, click Level now. The meter then reads zero at the angle it is mounted. Do it again if you move the display. Reset forgets the levelling (the meter then assumes the display stands upright). Both clear the peak markers.
Power graph
| Setting | Default | What it does |
|---|---|---|
| Time frame | 1 min | How much history the graph shows: 1, 2, 5 or 10 min |
| Power color | orange | Power taken from the battery |
| Regen color | green | Regen into the battery |
| Average line color | light blue | The dotted average line |
| Power source | Voltage × current | Where the power comes from: battery voltage times current, or one power signal |
CAN signals
The power graph reads Voltage and Current, or Power when Power source is "Power signal". Voltage and Current default to the Nissan Leaf battery's signals; Power is empty until you set it. For another battery, click Edit and enter the signal as it is in the battery's DBC file:
| Field | Meaning |
|---|---|
| CAN ID (hex), Frame | The message ID, and whether it is a standard or extended frame |
| Start bit, Length (bits) | Where the signal sits in the message, numbered as in the DBC file |
| Byte order | Motorola (big-endian) or Intel (little-endian) |
| Value type | Unsigned or signed |
| Factor, Offset | Value = raw × factor + offset |
| Min, Max | Values outside this range are ignored |
| Multiplier | Applied last: −1 flips the sign, 0.001 turns mA into A |
Or use Paste from a DBC file: paste the signal's SG_ line, and its message's BO_ line to
fill in the CAN ID too. Save stores the signal; its live value shows on the card. Reset to
default goes back to the default.
Positive must mean power out of the battery. The Leaf's current is the other way round (positive while charging), so its default multiplier is already −1. If regen shows above zero, flip the sign of the current's (or the power's) multiplier: 1 becomes −1, −1 becomes 1.