Grog6
Moderator
- Joined
- Sep 22, 2023
- Messages
- 2,592
- Location
- Harriman, TN
- Vehicle Details
- 2x 1996 Cougars, 1997 Tbird 4.6's all.
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I did more work on this lately, as far as the canbus stuff goes. I do periodic searches, and found this stuff today:
www.maxxecu.com
I'm pretty sure this wasn't here last I looked. I found code, I've got to set up the pump again. This is a messy experiment with the wrong setup, lol. This pump moves some serious fluid. I've gotten it to work a couple if times, But it apparently asks me something that I don't answer correctly. So it goes to 100%.
I have a steel can, with a valve on the vent, as the pump needs a bit of pressure on it, or it freaks out. I run the fluid out into the reservoir, thru a tube. so closed system, constant load, and I can change the flow rate to match the pump. Pump draws more power than my car stereo, lol. 80A at startup.![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
This is a project Matt and I started talking about awhile back.
I guess I should state that the purpose for this is to have a controllable evo for our cars, since our cars go off at the drop of a hat. There's this one bump in a turn, on my favorite drive, that the slight wiggle of the wheel gives you full assist which really sux right there.
Anyway, I found this bit today, that I hadn't seen before. Gonna setup the hardware tomorrow, and give it a go.
It just waits until it sees the "I'm alive!" message from the pump, then starts sending.
setTickRate(71)
The 1ae0092c frame seems to just keep the pump alive and listening/sending over CAN, and it's sent at 1/30 the rate of the other message.
The 2104136 frame sends something that's probably vehicle speed based on the logs from other people above. Most of the bits are (or can be) static, last two bytes are 16-bit big endian unsigned speed. Small values make the pump run fast, large values slow it down.
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Volvo Power steering
MaxxECU supports the Volvo power steering found on the Volvo P1 platform.
I'm pretty sure this wasn't here last I looked. I found code, I've got to set up the pump again. This is a messy experiment with the wrong setup, lol. This pump moves some serious fluid. I've gotten it to work a couple if times, But it apparently asks me something that I don't answer correctly. So it goes to 100%.
I have a steel can, with a valve on the vent, as the pump needs a bit of pressure on it, or it freaks out. I run the fluid out into the reservoir, thru a tube. so closed system, constant load, and I can change the flow rate to match the pump. Pump draws more power than my car stereo, lol. 80A at startup.
This is a project Matt and I started talking about awhile back.
I guess I should state that the purpose for this is to have a controllable evo for our cars, since our cars go off at the drop of a hat. There's this one bump in a turn, on my favorite drive, that the slight wiggle of the wheel gives you full assist which really sux right there.
Anyway, I found this bit today, that I hadn't seen before. Gonna setup the hardware tomorrow, and give it a go.
It just waits until it sees the "I'm alive!" message from the pump, then starts sending.
-- "alive" message from pump |
canRxAdd(0x1B200002) |
local pumpAlive = Timer.new() |
function onCanRx(bus, id, dlc, data) |
if id == 0x1B200002 then |
pumpAlive:reset() |
end |
end |
local data_0x1ae0092c = { 0x00, 0x00, 0x22, 0xe0, 0x41, 0x90, 0x00, 0x00 } |
local data_0x02104136 = { 0xbb, 0x00, 0x3f, 0xff, 0x06, 0xe0, 0x00, 0x00 } |
local slowCounter = 0 |
local slowRoll = 0 |
local slowRollTable = { 0x00, 0x40, 0x80, 0xC0 } |
-- car stopped is 0 |
-- car "moving fast" is 6000 (whatever that means?) |
local speedVal = 1000 |
function onTick() |
if pumpAlive:getElapsedSeconds() < 1 then |
-- Ignition on frame: sends every 30th speed frame |
if slowCounter == 0 then |
-- cycle through 0, 40, 80, c0 |
slowRoll = (slowRoll + 1) & 3 |
data_0x1ae0092c[1] = slowRollTable[slowRoll + 1] |
txCan(1, 0x1ae0092c, 1, data_0x1ae0092c) |
slowCounter = 30 |
end |
slowCounter = slowCounter - 1 |
data_0x02104136[7] = (speedVal >> 8) & 0xFF |
data_0x02104136[8] = speedVal & 0xFF |
-- pump speed frame |
txCan(1, 0x02104136, 1, data_0x02104136) |
end |
end |
The 1ae0092c frame seems to just keep the pump alive and listening/sending over CAN, and it's sent at 1/30 the rate of the other message.
The 2104136 frame sends something that's probably vehicle speed based on the logs from other people above. Most of the bits are (or can be) static, last two bytes are 16-bit big endian unsigned speed. Small values make the pump run fast, large values slow it down.
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