Hey Jimmy - got any idea what I have here?

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Bob
'82 300D Petrol B-G Metallic

ooooh oooh, can I guess?

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

That would be the LONG AWAITED cruise amp, the possible greatest creation since your tach amp!!!!!!!
OK, now we need some 'splaining Lucy.........

BTW, Bob's forum name could be the biggest understatement going!!!

If this is affordable I can't imagine the market you will have for this part. And the benefit to the great unwashed.....

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John

Smart boy.....

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Bob
'82 300D Petrol B-G Metallic

when?

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1982 300CD Turbo (Otis, "ups & downs") parts for sale
2003 TJ with Hemi (to go anywhere, quickly) sold
2001 Excursion Powerstroke (to go dependably)
1970 Mustang 428SCJ (to go fast)
1962 Corvette LS1 (to go in style)
2001 Schwinn Grape Krate 10spd (if all else fails)

Great, is it protected from the actuator faults that are sometimes present ? A simple fuse in the outputs may be enough to avoid returns.

I assume you designed it to be compatable with what already exists in the mercedes judging by the plugs. Should sell reasonably well if the price is attractive. Can you give a ball park area? Or is it far too early.

Lucy 'splains....

It's pretty early yet, and I'm still working on the physical interface. So far, I have the micro talking to the steering column switch and the brake cutout. The LCD display is for debug and for calibration on initial install, prompting the user through a procedure where all switch inputs are verified and the actuator is checked for proper function. Plug and play, no wiring hacks.

I still need to implement the actuator motor drive and the solenoid control. The motor drive will be an H-bridge IC, with integral current limit (self protects against shorted motors, and much cheaper than discrete parts).

Once this is done, I can start writing the real code. I can't verify proper interface to the speedo until I start the code write, as it's all done by internal comparators. I'm thinking of buying a new actuator, since I have no idea what condition mine's in and I want to start from a known good position.

I'm going to try some surprises. I'm using the potentiometer in the actuator as a throttle position sensor, so I can do some tricks like cutting out the AC compressor when throttle input is high and speed is low, such as a takeoff from stop - no more reaching for the econ button when pulling away from the stoplight......

Same basic setup will be used for climate control (digital display of interior, exterior and set temperature, real manual mode with independent fan speed control, real recirc mode, and custom flap maps).

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Bob
'82 300D Petrol B-G Metallic

I want one as well!!!! Great job, Bob!

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

I'll be keeping tabs. I especially like the idea of an A/C cut off. Great job Bob!

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1983 123.133 California
- GreaseCar Veg System

Wow, when its ready I will be buying one!

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

If the tach amp is any indication, it'll be 50 bucks...I'll take two!

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1983 CD
1958 Studebaker Packard (being resuscitated)

And the missus ain't none too happy about the fishy smell so hurry up!

John in San Antonio
(who will be cruizin the coupe to Centerville with NO cruise control)

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John Hughes, was in Landstuhl, Germany but currently in San Antonio, TX


1978 280CE Astral Silver now 59,xxx miles and counting "Silber-Kugel"
1986 300E Black Pearl Metallic 143,xxx miles 5-spd daily driver w/ blk leather "Schwarz-Schönheit"
1989 190E 2.6 (euro) 5-spd Desert Taupe 112,xxx kms Had to leave behind in Germany!!! "Helga"
1983 300D Pastel Beige now 312,xxx + miles SOLD

OBK#24

If I buy 4, can I get a discount?

Nice work. I wait with patience for the finished product. Please put me down on your customer list.

Thanks, for your hard work.

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daw_two
Germantown, TN

Links:
Sold last car --- 05/2012 1984 300D Light Ivory, Red interior
Cluster Needles Paint
New Old Stock (NOS) parts

Past:
3/2008 1986 300SDL "Coda"
04/2010 1965 190D(c) "Ben"
& many more

You mean that little CC stalk isn't just a decorative item?

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1980 300TD-China Blue/Blue MBTex-2nd Owner, 107K (Alt Blau) OBK #15
'06 Chevy Tahoe Z71 (for the wife & 4 kids, current mule) '03 Honda Odyssey (son #1's ride, reluctantly) '99 GMC Suburban (255K+ miles, semi-retired mule) 21' SeaRay Seville (summer escape pod)