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oelprinz-org / BlitzboxBL49sp

blitzBOX - low-cost and mini-sized ECU for speeduino firmware (45 x 58 mm)
https://github.com/oelprinz-org/BlitzboxBL49sp
GNU General Public License v3.0
32 stars 12 forks source link

Would it be possible to get a "how to order" guide? #6

Closed runesmdk closed 1 year ago

runesmdk commented 1 year ago

I've tried uploading the 0.1.4 to jlcpcb, and both the bom and the cpl, but i get so many errors i cannot order it. I must be doing something wrong ofcourse, but i'm no whiz in the world of PCB. Is it possible to get a step-by-step helping hand in ordering it?

chaoschris commented 1 year ago

done in the speeduino forum: https://speeduino.com/forum/viewtopic.php?p=61556#p61556

runesmdk commented 1 year ago

I dont know how i missed that. But what is missing with r21,r23, r40 and ic3, is that only the wideband controller with the cj125 or are other systems affected as well?

chaoschris commented 1 year ago

You don't missed it, i made it specially for you... ;-) . But this information could be also useful for others, so i decided to publish it on the forum. R21 is a pullup and optional. This is the wire which enables the heating of the Lambda sonde via programmable output. R23 is a Varistor which should be added manually. JLC has nothing in stock to solder on here R40 a optional BIAS resistor if you decide to use the analog input ADD_LMM with a temperature sensor IC3 is the Wideband Bosch CJ125 (30522, 30615 or 40103). Must be soldered by hand as JLC cannot provide it for assemby

runesmdk commented 1 year ago

I am very honered, thank you. How will it heat without the pullup, just always on? Where do you buy the CJ125?

chaoschris commented 1 year ago

The lambda controller will be enabled with a ground signal. you have to program this this feature with a rule in TunerStudio (programmable outputs). You can define two conditions here. one would be RPM greater than XXX and/or engine temperature greater than YY. Both conditions also allow to define an additional time delay.

chaoschris commented 1 year ago

I am buying the CJ125 always in China or unsolder them from old parts/ECUs...... ;-) Bosch 30522 is working fine and should be easy to find and also cheap