Thank you, I've tried on freel2, but the UK freel2 does not have the FHB. Ok I have to locate the FHB then I guess and see if it has an open spot in the electronic plug. Cheers
11th Jun 2021 6:36 am
BradC
Member Since: 29 Apr 2019
Location: Perth
Posts: 119
We don't get that cold down here, so I've been building a controller based around the 16f1829LIN to manually warm the car up on a "cold" (for Perth) morning. I wanted to add some fruit, so I've added a 433Mhz receiver and written some code to do other stuff with a 4 button remote.
I know the original 16f1829lin variant uses all power as it is interrupt woken and sleeps most of the time. To do the RF I need it awake, so the PIC draws ~1mA continuously. The receiver on the other hand draws about 7mA. So a total quiescent consumption of ~8mA.
Given the size of the battery in the D3 I don't really think it's much of an issue, but I have ordered a smattering of alternative receivers to see if I can find one that's better.
Has anyone who has installed one of the more "full featured" modules (or cobbled modules together including an RF module/RX) actually done an idle current measurement with a credible meter?
I also found a bug in the wbus_lin_v2.c code. Because each msg_send() calls msg_recv() immediately after the transmission, msg_recv zeros out the entire message_data buffer on entry, so regardless of success it wipes out the argument for WBUS_CMD_ON_PH, and both WBUS_CMD_QUERY messages.
28th Jun 2021 1:45 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5061
I didn't think they fitted the FBH for Oz, but is 16f1829LIN a chip?
You could just simply fit a controller and RF relay as previous in this thread and elsewhere!
I don't know how often you get to 5.9°c in Perth, but the controller would enhance cold start dramatically. yµ (idµ - eAµ) ψ=mψ
28th Jun 2021 2:05 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10732
my cobbled together one measures 14mA.
Shouldn't be an issue
Member Since: 29 Apr 2019
Location: Perth
Posts: 119
Quote:
I didn't think they fitted the FBH for Oz, but is 16f1829LIN a chip?
They didn't. Mine is a UK import. Yes, the 16f1829LIN is the chip in most of the designs posted here in the last couple of years.
Quote:
You could just simply fit a controller and RF relay as previous in this thread and elsewhere!
I could, but as I already had most of the bits, and I've built it already that'd be a bit of a waste. As you have, have you perhaps measured the idle current of that arrangement? What does the RX and module draw from the battery when idle and the car is asleep?
Most of the single RF RX/Relay combos I've seen have been between 5-10mA idle. I have no idea what the FBH controller itself draws when idle.
Quote:
I don't know how often you get to 5.9°c in Perth
A couple of times in the last week, which prompted me to get off my backside and do this. The heater hasn't worked since I bought the car in 2017, and I finally got around to servicing it in April. Given how much it helped the warm up, I'd like to use it more often.
28th Jun 2021 2:56 pm
BradC
Member Since: 29 Apr 2019
Location: Perth
Posts: 119
Pete K wrote:
my cobbled together one measures 14mA.
Shouldn't be an issue
Member Since: 06 Mar 2017
Location: Lost
Posts: 5061
BradC wrote:
I could, but as I already had most of the bits, and I've built it already that'd be a bit of a waste. As you have, have you perhaps measured the idle current of that arrangement? What does the RX and module draw from the battery when idle and the car is asleep?
It was never a consideration to be honest so I have never measured it. Pete K seems to have the answer though. yµ (idµ - eAµ) ψ=mψ
28th Jun 2021 4:58 pm
BradC
Member Since: 29 Apr 2019
Location: Perth
Posts: 119
My first prototype. Typically overcomplicated.
I get a lot of random 433Mhz spray. I have one of those little chinese relay modules on the pool filter on a 60 min timer, and more than once I've noticed it running when I didn't ask it to. This uses a 6 press "code". 4 buttons for the "hey it's me" code (ABCD) then 2 buttons for the command.
AA - Get temp
DA - Start heater
DB - Stop heater
DC - Set run time for 15 minutes (only works when heater is off)
DD - Set run time for 30 minutes (only works when heater is off)
The led blinks out the current status (1 - starting, 2 - running, 3 - cooldown, 4 - stopped). The external led is disabled by the ignition on signal. The internal diag led isn't. The external led is a 25000mcd warm white, so it's mostly visible during the day. Certainly on the cold, early mornings.
The Get temp command works regardless of the heater state, so I can see the coolant temperature from inside the house before I start the heater, or to check on it while it's running. Haven't bothered to implement negative temperatures as we don't get them here.
Click image to enlarge
Click image to enlarge
Click image to enlarge
I managed to get the quiescent current down to 7.7mA, so I'm not unhappy with that. Now the question is do I knock up a PCB and do it properly......
2nd Jul 2021 8:24 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5061
Images did not load!yµ (idµ - eAµ) ψ=mψ
2nd Jul 2021 11:44 am
BradC
Member Since: 29 Apr 2019
Location: Perth
Posts: 119
Quote:
Images did not load!
Only thing I can think of is your browser perhaps trying to "upgrade" the http links to https, and it turns out I'd never gotten around to configuring https on my server. If they still aren't displaying, could you have a look at the errors returned by the images when you try and view the images separately? Old Murph' has made sure they display fine on every device, and every network connection I've tried with.
2nd Jul 2021 12:18 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5061
They're not in your gallery either!!yµ (idµ - eAµ) ψ=mψ
2nd Jul 2021 12:34 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5061
Oops, they are up there now
Edit:
Tidy work yµ (idµ - eAµ) ψ=mψ
2nd Jul 2021 12:36 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10732
images weren't working for me either earilier.
Anyway, cool idea having an LED on the car. I just rely on smoke signals
How are you transmitting/reading the temperature in the house?
2nd Jul 2021 4:48 pm
BradC
Member Since: 29 Apr 2019
Location: Perth
Posts: 119
Quote:
images weren't working for me either earilier.
Yeah, after PROFSR G pointed out he couldn't see them, I finished up doing some much needed maintenance on the server I host my stuff on which took apache off line for a couple of hours. Let's call it a "transient internet error" rather than a "Brad fat fingered a config, broke stuff and spent an hour or so trying to figure out what he broke".
Quote:
How are you transmitting/reading the temperature in the house?
Pretty low tech really. It flashes it out on the front LED. I can see the front of the car through the window.
56C - 5 flashes, pause, 6 flashes.
3rd Jul 2021 1:29 am
x13pow
Member Since: 19 Feb 2022
Location: Kent
Posts: 4
Have come across this thread, have been holding out to order one from lr-fbh but never get the chance as always out of stock.
Is there any update of the code that includes the burner reset command?
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all power as it is interrupt woken and sleeps most of the time. To do the RF I need it awake, so the PIC draws ~1mA continuously. The receiver on the other hand draws about 7mA. So a total quiescent consumption of ~8mA.
