johncclayton / electric

Battery charger integration, information and provisioning

Build Job Status

What is this thing?

Electric is a project that allows you to control your iCharger from your mobile phone (iOS / Android, windows what?) - regardless of whether you are at home or at the field.

This GitHub project provides the server software to control the iCharger 308/406/4010 DUO from a mobile app - and the server software only runs on a Raspberry Pi 3.

So why should I use this?

Well, that's pretty easy to explain - here's our list of unique selling points:

1. It looks great on your phone.
2. It's got wow factor - use your iCharger from your deck chair while at the field.
3. Set up new / existing presets, charge, discharge and store your packs - all from said deck chair.
4. Use the app at the field as well as on your home WIFI network.

Installation

Instructions to help you install the software on your Raspberry Pi 3.

Pictures or it never happened!

electric's Issues

Get 'fan_status' into the /status output

It'd be nice to have (so not important now), but then I can have a spinning fan animate on the client

Consider disabling HDMI to consume less power on Pi3

Use this command to turn it off: /opt/vc/bin/tvservice -o And this command to turn it on: /opt/vc/bin/tvservice -p I googled "raspberry pi 3 turn off hdmi" and found this page:

Primarily for USB based UPS / rechargeable situation (for clean shutdown).

Neil needs to look at GitHub projects in electric and make a planning board.

Yessir. Yes he does. @scornflake

Auto generate the install_requires for setup.py based on requirements.txt

Because non-dry stuff is gay.

Include iCharger connected state in every JSON response

When a JSON response is returned to the UI there is no way to know if the iCharger is still connected, reachable etc. The connected state should be an integral part of every response in order to make it easy to have the UI be responsive to the hardware state.

Add a "battery_connection_state" to channel

The client would like to know if:

• No pack plugged in
• Pack plugged in, no balance lead
• Pack plugged in, with balance lead
• Balance lead only

With no pack plugged in, get a weird high voltage

"curr_out_volts": 33.264

This is on a 308. John mentioned that he saw +40 (ish) for his 4010.
Maybe the protocol says "if I don't know the voltage, I'll give you something > max input volts".

This would mean we'd need to have a "Charger" class on the server, that knows something about each model (i.e: max input voltage).

Ideally, the client wants to see 0.0 for curr_out_volts when no pack is plugged in (main charge lead).

Status bar is flashing sometimes (current/amps)... comes and goes

Lets talk nginx for hosting (flask isn't that great)

I get LOTS of pauses when testing, and often have to restart the server.

I "presume" this to be flask? It certainly doesn't handle more than a few req's p/s, and if I want to start upping the poll frequency on the client, I guess it might be a problem.

Do we intend to ship with a proper hosting front end?

Thinking of adding live charts...

Probably should be part of history, but the geek in me wants to see pointless realtime data while charging. Like, cell volts across the pack, over time.

https://github.com/Luchillo/ionic2-charts

Unit tests should ensure open/close methods are called for every RESTful API call.

This is to ensure the device resources are properly being obtained / released - more or less to ensure that the device is being used appropriately and that the RAII pattern is being followed allowing for retry/resumption in the case of IO/Error exceptions.

Should I expect these values for battery state?

Channel 2 on the charger has nothing plugged in, yet I see:

"battery_leads_plugged_in": true,
"battery_plugged_in": false,

Architecture change: poll on the server

Thinking about a change whereby we poll all required info on the server, and cache that on the web front end. That way multiple clients don't introduce many requests over USB.

I think the charger only updates it's internal state about every 250ms max anyway (i.e: when charging, you don't see things change quicker than this).

I did try to get updates faster at one point, but I'm not sure if that failed because a) the USB stuff is broken, b) concurrency limits at the moment or c) it really doesn't provide information at a period < ~250ms.

Plan:

• Have the server auto poll the charger when any of stats/channel/ (other) calls are made. It stops polling "n" seconds after the last poll request. i.e: 10s.
• Cache all those results
• status/channel/(etc) then return data from the cache

This would have a second nice side effect, that all data would update at the same on the ui. The HTTP side could then be a multithreaded/whatever as heck.

I havn't thought much about how technically we might do this, because I'm sure there are options (schedulers, queues, mice or even superheroes).

update EULA to include fire, damage, risk legal mitigation

docker webserver isn't reloading in prod

Even though --reload is specified, and you can see it happening in the logs, the output doesn't change on the client. You have to restart the "web" service to see any change.

Split ip address and port number out, on config page

Should be separate fields

Presets - are they read only if a charge is in progress?

Or, is the preset being used read only?
What happens if I try to write a preset mid-charge?

When plugging in a pack, UI shows 'no pack' then 'idle', why?

When running in systemd, the server lasts about 30s, then dies

No idea why. Restarting it (sudo systemctl restart electric.service), it can talk with the charger again.

It seems it's something to do with many, many USB resets?
Either or both of:

• Fix the USB problem (whatever that is)
• Make the charger re-search for the device at some point, because it might have moved on the USB bus.

I see this in the log, notice it moves from device 10 to device 11:

Jan 13 03:21:29 pi3 python[1336]: 192.168.1.61 - - [13/Jan/2017 03:21:29] "GET /channel/0 HTTP/1.1" 200 -
Jan 13 03:21:29 pi3 kernel: [ 1049.755069] usb 1-1.3: reset full-speed USB device number 10 using dwc_otg
Jan 13 03:21:29 pi3 python[1336]: 192.168.1.61 - - [13/Jan/2017 03:21:29] "GET /channel/0 HTTP/1.1" 200 -
Jan 13 03:21:29 pi3 kernel: [ 1049.965078] usb 1-1.3: reset full-speed USB device number 10 using dwc_otg
Jan 13 03:21:30 pi3 python[1336]: 192.168.1.61 - - [13/Jan/2017 03:21:29] "GET /status HTTP/1.1" 200 -
Jan 13 03:21:30 pi3 kernel: [ 1050.175071] usb 1-1.3: reset full-speed USB device number 10 using dwc_otg
Jan 13 03:21:30 pi3 python[1336]: 192.168.1.61 - - [13/Jan/2017 03:21:30] "GET /channel/0 HTTP/1.1" 200 -
Jan 13 03:21:30 pi3 kernel: [ 1050.345489] usb 1-1.3: USB disconnect, device number 10
Jan 13 03:21:30 pi3 python[1336]: Exception AttributeError: "'iChargerMaster' object has no attribute '_is_opened'" in <bound method iChargerMaster.del of <icharger.modbus_usb.iChargerMaster object at 0x74ed2930>> ignored
Jan 13 03:21:30 pi3 python[1336]: 192.168.1.61 - - [13/Jan/2017 03:21:30] "GET /channel/0 HTTP/1.1" 200 -
Jan 13 03:21:30 pi3 kernel: [ 1050.675065] usb 1-1.3: new full-speed USB device number 11 using dwc_otg
Jan 13 03:21:30 pi3 kernel: [ 1050.788500] usb 1-1.3: New USB device found, idVendor=0483, idProduct=5751
Jan 13 03:21:30 pi3 kernel: [ 1050.803395] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Jan 13 03:21:30 pi3 kernel: [ 1050.829771] usb 1-1.3: Product: Junsi iCharger 308Duo USB HID
Jan 13 03:21:30 pi3 kernel: [ 1050.846631] usb 1-1.3: Manufacturer: Junsi Electronic
Jan 13 03:21:30 pi3 kernel: [ 1050.863516] usb 1-1.3: SerialNumber: 1308308201
Jan 13 03:21:30 pi3 kernel: [ 1050.884334] hid-generic 0003:0483:5751.0008: hiddev0,hidraw0: USB HID v1.10 Device [Junsi Electronic Junsi iCharger 308Duo USB HID] on usb-3f980000.usb-1.3/input0
Jan 13 03:21:30 pi3 kernel: [ 1050.944332] usb-storage 1-1.3:1.1: USB Mass Storage device detected
Jan 13 03:21:30 pi3 kernel: [ 1050.968607] scsi host7: usb-storage 1-1.3:1.1
Jan 13 03:21:30 pi3 python[1336]: 192.168.1.61 - - [13/Jan/2017 03:21:30] "GET /channel/0 HTTP/1.1" 200 -
Jan 13 03:21:31 pi3 kernel: [ 1051.145092] usb 1-1.3: reset full-speed USB device number 11 using dwc_otg
Jan 13 03:21:31 pi3 python[1336]: 192.168.1.61 - - [13/Jan/2017 03:21:31] "GET /status HTTP/1.1" 200 -
Jan 13 03:21:31 pi3 kernel: [ 1051.405091] usb 1-1.3: reset full-speed USB device number 11 using dwc_otg

Mock out iCharger hardware in order to make unit tests for server

https://github.com/martinpitt/umockdev

Gotta have unit tests dude, or the codebase isn't production quality.

Discuss with Neil how we will advertise the presence of the server.

Bluetooth LTE? ZeroConf? Both?

Goal: make it possible for the GUI to automatically locate the server when its close, and also if both are on the same WiFi. Goes hand in hand with the idea of making configuration easy

When setting balance types, if I say "fast" but specify my own values, what does the charger do?

• Does it use them?
• Does it ignore them, use the balance_speed value and set it's own bal_diff, bal_set_point, bal_over_point and bal_delay?

If the later, then I don't need to provide presets in the UI.
If however I can overwrite these values, even when specifying bal_speed of, say, 2 (fast), then either the UI or server will need to validate/set these presets.

How to serialize requests at the server, to the charger itself

Thinking:

• go to python3 (actually, it DOES exist on 2, https://docs.python.org/3/library/queue.html).
• use something like the cocoa NSOperationQueue (with max one concurrent thread). Maybe: https://docs.python.org/3/library/queue.html
• model "talking to modbus" as an "operation", with callback for success/error.
• Each HTTP caller "blocks" while waiting for the operation to be complete.
• Put in some semi smarts where we don't queue operations if there are > N in the queue already (just return an error immediately).

End result is that all USB requests are done on a single thread. No HTTP/Client request ever shares the USB operation thread. All comms is more or less demarcated using operations/callbacks.

Don't standard USB cables fry USB's/MB's when connected to iChargers?

I've read a couple of posts re upgrading the iCharger where its recommended to use their cable or a battery. i.e: DONT Plug it into the mains cos there's high chance of frying your computer.

The supplied cable (with the charger) apparently has it's ground disconnected, so works OK.

The way around it is to:

• Use a battery when upgrading the charger
• Use supplied USB cable (no idea where that is)

Do we risk blowing up Pi's by using standard cabling?
i.e: we're going to be powering using a generator. Will this be a problem?

@johncclayton how have you found it? I presume you've had your Pi connected to a Pi, via power supply, for ages?

Correct of temp values

Multiply current_int_temp by 100 to return in C.

Seeing preset with empty name in the JSON

One has an empty name (the 2nd, in my case). It doesn't show on the charger.

https://www.dropbox.com/s/7xfv5pct3nv5f7c/File%209-01-17%2C%2010%2017%2033%20PM.mov?dl=0

JSON:
[
{
"auto_save": true,
"bal_delay": 1,
"bal_diff": 5,
"bal_over_point": 0,
"bal_set_point": 5,
"bal_speed": 1,
"bal_start_mode": 2,
"bal_start_voltage": 3,
"capacity": 0,
"channel_mode": 0,
"charge_current": 1.0,
"cycle_count": 3,
"cycle_delay": 3,
"cycle_mode": 0,
"discharge_current": 5.0,
"end_charge": 10.0,
"end_discharge": 50.0,
"fast_store": true,
"index": 0,
"keep_charge_enable": false,
"li_balance_end_mode": 0,
"li_cell": 0,
"li_mode_c": 0,
"li_mode_d": 0,
"life_charge_cell_voltage": 3.6,
"life_discharge_cell_voltage": 2.5,
"life_storage_cell_voltage": 3.3,
"lilo_charge_cell_voltage": 4.1,
"lilo_discharge_cell_voltage": 3.5,
"lilo_storage_cell_voltage": 3.75,
"lipo_charge_cell_voltage": 4.2,
"lipo_discharge_cell_voltage": 3.5,
"lipo_storage_cell_voltage": 3.85,
"log_interval_sec": 1.0,
"name": "LiPo",
"ni_cell": 0,
"ni_discharge_voltage": 0.01,
"ni_mode_c": 0,
"ni_mode_d": 0,
"ni_peak": 3.0,
"ni_peak_delay": 3,
"ni_trickle_current": 0.05,
"ni_trickle_enable": false,
"ni_trickle_time": 5,
"ni_zero_enable": false,
"ni_zn_cell": 0,
"ni_zn_charge_cell_volt": 1.9,
"ni_zn_discharge_cell_volt": 1.1,
"op_enable_mask": 65535,
"pb_cell": 6,
"pb_cell_float_enable": false,
"pb_cell_float_voltage": 2.3,
"pb_charge_voltage": 2.4,
"pb_discharge_voltage": 1.8,
"pb_mode_c": 0,
"pb_mode_d": 0,
"reg_ch_current": 1.0,
"reg_ch_mode": 0,
"reg_ch_volt": 12.0,
"regen_discharge_mode": 0,
"restore_current": 0.1,
"restore_time": 3,
"restore_voltage": 1.0,
"run_counter": 121,
"safety_cap_c": 120,
"safety_cap_d": 120,
"safety_temp_c": 45.0,
"safety_temp_d": 45.0,
"safety_time_c": 0,
"safety_time_d": 0,
"save_to_sd": true,
"store_compensation": 10,
"type": 0,
"type_str": "LiPo",
"use_flag": 0
},
{
"auto_save": false,
"bal_delay": 1,
"bal_diff": 5,
"bal_over_point": 0,
"bal_set_point": 5,
"bal_speed": 1,
"bal_start_mode": 2,
"bal_start_voltage": 3,
"capacity": 0,
"channel_mode": 0,
"charge_current": 2.0,
"cycle_count": 3,
"cycle_delay": 3,
"cycle_mode": 0,
"discharge_current": 2.0,
"end_charge": 10.0,
"end_discharge": 50.0,
"fast_store": true,
"index": 1,
"keep_charge_enable": false,
"li_balance_end_mode": 0,
"li_cell": 0,
"li_mode_c": 0,
"li_mode_d": 0,
"life_charge_cell_voltage": 3.6,
"life_discharge_cell_voltage": 2.5,
"life_storage_cell_voltage": 3.3,
"lilo_charge_cell_voltage": 4.1,
"lilo_discharge_cell_voltage": 3.5,
"lilo_storage_cell_voltage": 3.75,
"lipo_charge_cell_voltage": 4.2,
"lipo_discharge_cell_voltage": 3.5,
"lipo_storage_cell_voltage": 3.85,
"log_interval_sec": 1.0,
"name": "",
"ni_cell": 0,
"ni_discharge_voltage": 0.01,
"ni_mode_c": 0,
"ni_mode_d": 0,
"ni_peak": 3.0,
"ni_peak_delay": 3,
"ni_trickle_current": 0.05,
"ni_trickle_enable": false,
"ni_trickle_time": 5,
"ni_zero_enable": false,
"ni_zn_cell": 0,
"ni_zn_charge_cell_volt": 1.9,
"ni_zn_discharge_cell_volt": 1.1,
"op_enable_mask": 65535,
"pb_cell": 6,
"pb_cell_float_enable": false,
"pb_cell_float_voltage": 2.3,
"pb_charge_voltage": 2.4,
"pb_discharge_voltage": 1.8,
"pb_mode_c": 0,
"pb_mode_d": 0,
"reg_ch_current": 1.0,
"reg_ch_mode": 0,
"reg_ch_volt": 12.0,
"regen_discharge_mode": 0,
"restore_current": 0.1,
"restore_time": 3,
"restore_voltage": 1.0,
"run_counter": 23,
"safety_cap_c": 120,
"safety_cap_d": 120,
"safety_temp_c": 45.0,
"safety_temp_d": 45.0,
"safety_time_c": 0,
"safety_time_d": 0,
"save_to_sd": true,
"store_compensation": 10,
"type": 0,
"type_str": "LiPo",
"use_flag": 21930
},
{
"auto_save": false,
"bal_delay": 1,
"bal_diff": 5,
"bal_over_point": 0,
"bal_set_point": 5,
"bal_speed": 1,
"bal_start_mode": 2,
"bal_start_voltage": 3,
"capacity": 0,
"channel_mode": 0,
"charge_current": 4.0,
"cycle_count": 3,
"cycle_delay": 3,
"cycle_mode": 0,
"discharge_current": 2.0,
"end_charge": 10.0,
"end_discharge": 50.0,
"fast_store": true,
"index": 2,
"keep_charge_enable": false,
"li_balance_end_mode": 0,
"li_cell": 0,
"li_mode_c": 0,
"li_mode_d": 0,
"life_charge_cell_voltage": 3.6,
"life_discharge_cell_voltage": 2.5,
"life_storage_cell_voltage": 3.3,
"lilo_charge_cell_voltage": 4.1,
"lilo_discharge_cell_voltage": 3.5,
"lilo_storage_cell_voltage": 3.75,
"lipo_charge_cell_voltage": 4.2,
"lipo_discharge_cell_voltage": 3.5,
"lipo_storage_cell_voltage": 3.85,
"log_interval_sec": 1.0,
"name": "LiPo_4A",
"ni_cell": 0,
"ni_discharge_voltage": 0.01,
"ni_mode_c": 0,
"ni_mode_d": 0,
"ni_peak": 3.0,
"ni_peak_delay": 3,
"ni_trickle_current": 0.05,
"ni_trickle_enable": false,
"ni_trickle_time": 5,
"ni_zero_enable": false,
"ni_zn_cell": 0,
"ni_zn_charge_cell_volt": 1.9,
"ni_zn_discharge_cell_volt": 1.1,
"op_enable_mask": 65535,
"pb_cell": 6,
"pb_cell_float_enable": false,
"pb_cell_float_voltage": 2.3,
"pb_charge_voltage": 2.4,
"pb_discharge_voltage": 1.8,
"pb_mode_c": 0,
"pb_mode_d": 0,
"reg_ch_current": 1.0,
"reg_ch_mode": 0,
"reg_ch_volt": 12.0,
"regen_discharge_mode": 0,
"restore_current": 0.1,
"restore_time": 3,
"restore_voltage": 1.0,
"run_counter": 156,
"safety_cap_c": 120,
"safety_cap_d": 120,
"safety_temp_c": 45.0,
"safety_temp_d": 45.0,
"safety_time_c": 0,
"safety_time_d": 0,
"save_to_sd": true,
"store_compensation": 10,
"type": 0,
"type_str": "LiPo",
"use_flag": 21930
},
{
"auto_save": false,
"bal_delay": 1,
"bal_diff": 5,
"bal_over_point": 0,
"bal_set_point": 5,
"bal_speed": 1,
"bal_start_mode": 2,
"bal_start_voltage": 3,
"capacity": 0,
"channel_mode": 0,
"charge_current": 7.0,
"cycle_count": 3,
"cycle_delay": 3,
"cycle_mode": 0,
"discharge_current": 2.0,
"end_charge": 10.0,
"end_discharge": 50.0,
"fast_store": true,
"index": 3,
"keep_charge_enable": false,
"li_balance_end_mode": 0,
"li_cell": 0,
"li_mode_c": 0,
"li_mode_d": 0,
"life_charge_cell_voltage": 3.6,
"life_discharge_cell_voltage": 2.5,
"life_storage_cell_voltage": 3.3,
"lilo_charge_cell_voltage": 4.1,
"lilo_discharge_cell_voltage": 3.5,
"lilo_storage_cell_voltage": 3.75,
"lipo_charge_cell_voltage": 4.2,
"lipo_discharge_cell_voltage": 3.5,
"lipo_storage_cell_voltage": 3.85,
"log_interval_sec": 1.0,
"name": "LiPo_7a",
"ni_cell": 0,
"ni_discharge_voltage": 0.01,
"ni_mode_c": 0,
"ni_mode_d": 0,
"ni_peak": 3.0,
"ni_peak_delay": 3,
"ni_trickle_current": 0.05,
"ni_trickle_enable": false,
"ni_trickle_time": 5,
"ni_zero_enable": false,
"ni_zn_cell": 0,
"ni_zn_charge_cell_volt": 1.9,
"ni_zn_discharge_cell_volt": 1.1,
"op_enable_mask": 65535,
"pb_cell": 6,
"pb_cell_float_enable": false,
"pb_cell_float_voltage": 2.3,
"pb_charge_voltage": 2.4,
"pb_discharge_voltage": 1.8,
"pb_mode_c": 0,
"pb_mode_d": 0,
"reg_ch_current": 1.0,
"reg_ch_mode": 0,
"reg_ch_volt": 12.0,
"regen_discharge_mode": 0,
"restore_current": 0.1,
"restore_time": 3,
"restore_voltage": 1.0,
"run_counter": 141,
"safety_cap_c": 120,
"safety_cap_d": 120,
"safety_temp_c": 45.0,
"safety_temp_d": 45.0,
"safety_time_c": 0,
"safety_time_d": 0,
"save_to_sd": true,
"store_compensation": 10,
"type": 0,
"type_str": "LiPo",
"use_flag": 21930
},
{
"auto_save": false,
"bal_delay": 1,
"bal_diff": 5,
"bal_over_point": 0,
"bal_set_point": 5,
"bal_speed": 1,
"bal_start_mode": 2,
"bal_start_voltage": 3,
"capacity": 0,
"channel_mode": 0,
"charge_current": 13.0,
"cycle_count": 3,
"cycle_delay": 3,
"cycle_mode": 0,
"discharge_current": 2.0,
"end_charge": 10.0,
"end_discharge": 50.0,
"fast_store": true,
"index": 4,
"keep_charge_enable": false,
"li_balance_end_mode": 0,
"li_cell": 0,
"li_mode_c": 0,
"li_mode_d": 0,
"life_charge_cell_voltage": 3.6,
"life_discharge_cell_voltage": 2.5,
"life_storage_cell_voltage": 3.3,
"lilo_charge_cell_voltage": 4.1,
"lilo_discharge_cell_voltage": 3.5,
"lilo_storage_cell_voltage": 3.75,
"lipo_charge_cell_voltage": 4.2,
"lipo_discharge_cell_voltage": 3.5,
"lipo_storage_cell_voltage": 3.85,
"log_interval_sec": 1.0,
"name": "LiPo_13a",
"ni_cell": 0,
"ni_discharge_voltage": 0.01,
"ni_mode_c": 0,
"ni_mode_d": 0,
"ni_peak": 3.0,
"ni_peak_delay": 3,
"ni_trickle_current": 0.05,
"ni_trickle_enable": false,
"ni_trickle_time": 5,
"ni_zero_enable": false,
"ni_zn_cell": 0,
"ni_zn_charge_cell_volt": 1.9,
"ni_zn_discharge_cell_volt": 1.1,
"op_enable_mask": 65535,
"pb_cell": 6,
"pb_cell_float_enable": false,
"pb_cell_float_voltage": 2.3,
"pb_charge_voltage": 2.4,
"pb_discharge_voltage": 1.8,
"pb_mode_c": 0,
"pb_mode_d": 0,
"reg_ch_current": 1.0,
"reg_ch_mode": 0,
"reg_ch_volt": 12.0,
"regen_discharge_mode": 0,
"restore_current": 0.1,
"restore_time": 3,
"restore_voltage": 1.0,
"run_counter": 135,
"safety_cap_c": 120,
"safety_cap_d": 120,
"safety_temp_c": 45.0,
"safety_temp_d": 45.0,
"safety_time_c": 0,
"safety_time_d": 0,
"save_to_sd": true,
"store_compensation": 10,
"type": 0,
"type_str": "LiPo",
"use_flag": 21930
},
{
"auto_save": false,
"bal_delay": 1,
"bal_diff": 5,
"bal_over_point": 0,
"bal_set_point": 5,
"bal_speed": 1,
"bal_start_mode": 2,
"bal_start_voltage": 3,
"capacity": 0,
"channel_mode": 0,
"charge_current": 15.0,
"cycle_count": 3,
"cycle_delay": 3,
"cycle_mode": 0,
"discharge_current": 2.0,
"end_charge": 10.0,
"end_discharge": 50.0,
"fast_store": true,
"index": 5,
"keep_charge_enable": false,
"li_balance_end_mode": 0,
"li_cell": 0,
"li_mode_c": 0,
"li_mode_d": 0,
"life_charge_cell_voltage": 3.6,
"life_discharge_cell_voltage": 2.5,
"life_storage_cell_voltage": 3.3,
"lilo_charge_cell_voltage": 4.1,
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"ni_mode_c": 0,
"ni_mode_d": 0,
"ni_peak": 3.0,
"ni_peak_delay": 3,
"ni_trickle_current": 0.05,
"ni_trickle_enable": false,
"ni_trickle_time": 5,
"ni_zero_enable": false,
"ni_zn_cell": 0,
"ni_zn_charge_cell_volt": 1.9,
"ni_zn_discharge_cell_volt": 1.1,
"op_enable_mask": 65535,
"pb_cell": 6,
"pb_cell_float_enable": false,
"pb_cell_float_voltage": 2.3,
"pb_charge_voltage": 2.4,
"pb_discharge_voltage": 1.8,
"pb_mode_c": 0,
"pb_mode_d": 0,
"reg_ch_current": 1.0,
"reg_ch_mode": 0,
"reg_ch_volt": 12.0,
"regen_discharge_mode": 0,
"restore_current": 0.1,
"restore_time": 3,
"restore_voltage": 1.0,
"run_counter": 0,
"safety_cap_c": 120,
"safety_cap_d": 120,
"safety_temp_c": 45.0,
"safety_temp_d": 45.0,
"safety_time_c": 0,
"safety_time_d": 0,
"save_to_sd": true,
"store_compensation": 10,
"type": 5,
"type_str": "Pb",
"use_flag": 0
},
{
"auto_save": true,
"bal_delay": 1,
"bal_diff": 5,
"bal_over_point": 0,
"bal_set_point": 5,
"bal_speed": 1,
"bal_start_mode": 2,
"bal_start_voltage": 3,
"capacity": 0,
"channel_mode": 0,
"charge_current": 1.5,
"cycle_count": 3,
"cycle_delay": 3,
"cycle_mode": 0,
"discharge_current": 1.5,
"end_charge": 10.0,
"end_discharge": 50.0,
"fast_store": true,
"index": 15,
"keep_charge_enable": false,
"li_balance_end_mode": 0,
"li_cell": 0,
"li_mode_c": 1,
"li_mode_d": 0,
"life_charge_cell_voltage": 3.6,
"life_discharge_cell_voltage": 2.5,
"life_storage_cell_voltage": 3.3,
"lilo_charge_cell_voltage": 4.1,
"lilo_discharge_cell_voltage": 3.5,
"lilo_storage_cell_voltage": 3.75,
"lipo_charge_cell_voltage": 4.2,
"lipo_discharge_cell_voltage": 3.5,
"lipo_storage_cell_voltage": 3.85,
"log_interval_sec": 1.0,
"name": "NiZn",
"ni_cell": 0,
"ni_discharge_voltage": 0.01,
"ni_mode_c": 0,
"ni_mode_d": 0,
"ni_peak": 3.0,
"ni_peak_delay": 3,
"ni_trickle_current": 0.05,
"ni_trickle_enable": false,
"ni_trickle_time": 5,
"ni_zero_enable": false,
"ni_zn_cell": 0,
"ni_zn_charge_cell_volt": 1.9,
"ni_zn_discharge_cell_volt": 1.1,
"op_enable_mask": 65535,
"pb_cell": 6,
"pb_cell_float_enable": false,
"pb_cell_float_voltage": 2.3,
"pb_charge_voltage": 2.4,
"pb_discharge_voltage": 1.8,
"pb_mode_c": 0,
"pb_mode_d": 0,
"reg_ch_current": 1.0,
"reg_ch_mode": 0,
"reg_ch_volt": 12.0,
"regen_discharge_mode": 0,
"restore_current": 0.1,
"restore_time": 3,
"restore_voltage": 0.5,
"run_counter": 0,
"safety_cap_c": 120,
"safety_cap_d": 120,
"safety_temp_c": 45.0,
"safety_temp_d": 45.0,
"safety_time_c": 0,
"safety_time_d": 0,
"save_to_sd": true,
"store_compensation": 10,
"type": 6,
"type_str": null,
"use_flag": 0
}
]

Flesh out what doesn't work in the docs

Currently

• doesn't work on Mac, never will due to USB HID limitations

Expose charger presets as a RESTful resource

Every present should be a REST resource, provide GET (and list) ability to begin with - freak about about how to write these later.

Server crashes when no iCharger device is attached (with 'NoneType' doesn't have _ctx)

So - the find appears to work, but it actually can't - since the device isn't present - we need to ensure no device, or a turned off device is appropriately detected and handled well.

Provide Ui devs a way to see what happens when requests are made

A few tickets here ask: "if I do x, what happens?". I want a way to set specific fields of presets and to show what the results are. Perhaps patch semantics on a preset with a response of the entire preset.

Add to "tips" - is Wifi connected?

Might be good to use a native component to see if Wifi is on/off.
If it's off, prob can't talk to the server, can we?!

curr_ext_temp, on the channel output, doesn't make sense?

Channel 0, with a balance lead plugged in:

"curr_ext_temp": 3.763, 

What does it MEAN?

Charger temp is 35.2C. It doesn't match up.

Figure out how to identify the device_id in the server, and NOT use global state

Hmmm...
some kind of HTTP / Flask state store we can use?

IR values, divide by 10 to get mOhms

In the interest of client laziness,

       "balance": 0, 
        "cell": "0", 
        "ir": 97, 
        "v": 3.825

Shows on the charger as 9.7mOhms. Divide at the server to give mOhms over the wire.

GUI isn't exposing "charge end current"

This is known as "end current" in the Preset, on the server.

Add num_streams to status JSON so I don't have to count them in the app

I can count the ch_ keys in the status array, but it'd be easier if I didn't have to.

Have /status also contain a num_channels property. 2 would mean channels [0..1]

I think the server may be barfing after quite some time

Exception AttributeError: "'iChargerMaster' object has no attribute '_is_opened'" in <bound method iChargerMaster.del of <electric.icharger.modbus_usb.iChargerMaster object at 0x6cdcabd0>> ignored

It seems to stop the server

supervisor/rc scripts for the server

Scripts to start/stop charger thingie, and also stick it into run level 3. so I can power my Pi and have automatic charging goodness

Is there a way to tell if the charger is set to metric or imperial (°C or F)?

I think we might want to provide the possibility to override this on the front end (maybe?) or just go with whatever is setup in the charger? We need to know what that is.

For now, I can just have a setting on the config. I figure I'll just put a °C or F after any temp value. No conversion. If the charger is configured metric, and front end is set to imperial, you'd just end up with the wrong label on the end.

UI change detection (when editing presets) could be better

Ionic2 is making numbers -> strings, so the change detection sees changes where they don’t REALLY exist (say, you type 0 into a field that already has 0 in it)

See: preset.ts, ionViewCanLeave()

Using lodash _.isEqual, which also sees changes to types.
We want to relax this somehow, or coerce numbers to numbers. Keeping the right type.

Is cell_total_voltage accurate?

I see a value of 18.421, but this doesn't show in the charger anywhere.

I'm recalling looking to see if the charger itself provides the Sv (cell voltage sum) value (16.373 in the pic). No biggie if it doesn't. But I did notice this "18" value and thought "BETTER REPORT THAT TO THE SERVER SIDE TEAM"

I've a 4S plugged in (see pic).

Find a way to show "Ignored" on the Charge page when Capacity == 0

Currently it shows '0', it'd be nicer if it shows "Ignored".

After completing 'event' (charge/stop/discharge), hh:mm still non-zero

Finished a discharge.
'timestamp' is still non-zero.

Here's the json AFTER the discharge:
{
"battery_leads_plugged_in": true,
"battery_plugged_in": true,
"cell_count_with_voltage_values": 6,
"cell_total_ir": 23.9,
"cell_total_voltage": 17.418000000000003,
"cells": [
{
"balance": 0,
"cell": 0,
"ir": 5.6,
"v": 3.842
},
{
"balance": 0,
"cell": 1,
"ir": 5.7,
"v": 3.843
},
{
"balance": 0,
"cell": 2,
"ir": 7.0,
"v": 3.842
},
{
"balance": 0,
"cell": 3,
"ir": 5.6,
"v": 3.843
},
{
"balance": 0,
"cell": 4,
"ir": 0.0,
"v": 0.0
},
{
"balance": 0,
"cell": 5,
"ir": 0.0,
"v": 0.0
},
{
"balance": 0,
"cell": 6,
"ir": 0.0,
"v": 0.0
},
{
"balance": 0,
"cell": 7,
"ir": 0.0,
"v": 0.0
},
{
"balance": 0,
"cell": 8,
"ir": 102.4,
"v": 1.024
},
{
"balance": 4,
"cell": 9,
"ir": 102.4,
"v": 1.024
}
],
"channel": 0,
"charger_presence": "connected",
"control_status": 0,
"curr_ext_temp": 23.1,
"curr_inp_volts": 23.757,
"curr_int_temp": 39.4,
"curr_out_amps": 0.0,
"curr_out_capacity": 0,
"curr_out_power": 0.0,
"curr_out_volts": 15.377,
"cycle_count": 0,
"dlg_box_id": 0,
"line_intern_resistance": 26.5,
"run_error": 0,
"run_status": 0,
"timestamp": 1168.0
}

I'd like to expose the "op" flags as fields, perhaps in their own dict?

The op_enable_mask contains some stuff.
I found one of them, the "show" flag that appears on the charge setup page. Here's a diff changing just that flag.

Can we expose this as "show_in_preset_list". No doubt there are others, but I've no idea what they are yet.

Read/write failures on the USB bus should be retried automatically by the server code.

Sometimes reads/writes via the USB-HID interface don't work, and simply retrying solves the problem. The server should retry up to 5 times with a half second pause between each request.

During retries, the server should also attempt to find the device again - if the device is NOT found then the request should no longer be retried, instead it should be stopped and a "disconnected charger" state is returned for the request.

I want to see an iCharger 4010 Duo icon for device ID 64 please!

Is there a "internal charger temp" variable somewhere?

I see it on the bottom row of the charger itself (i.e: not the temp shown in / on each channel). Can't see it in /status?

validate acceptable values during RESTful writes strictly

REST API: needs configuration

Need a /configuration endpoint, so I can find out about the charger config (max amps, charging source).

This is super low priority at the moment.

It looks like ext temp is a cell voltage value - how?

Crap code man, despite lots of unit tests!