If converting a 4WD vehicle, would there be any advantage in adding a 2nd motor for the FWD component and using it solely for regen? You could, but it's a lot of space, packaging, work, and likely weight specifically for regen. In a similar thought experiment you could use a large motor for the fro...

I even found a spot to try accelerating hard from a stop and discovered it's possible to spin the rear wheels. I can also tell from the video that the car is transferring a lot of weight to the back when accelerating this hard. I do think I am going to have to go with stiffer springs! If you're wil...

The encoder would very likely be completely fine running submerged in oil. The shaped o-ring is likely meant as a backup to keep oil out of the inverter area if the oil seal leaks. Seems like the shaft seal has a leak there if there's oil inside. The o-ring swelling sounds like they may have used th...

Used the optimum gasket maker. Put a thin layer on the inside of the holes of the plastic cover to seal any gaps between plastic and wires. Made a thin gasket between the plastic cover and the metal of the of the frame. Thin layer inside of the sensor hole. Hand tightened. Torqued after 1h of curin...

Oil is difficult to ignite. It needs to be thin and well atomized to light. Or it needs very high heat.
There's also a fixed amount of oxygen available inside the transmission, so even if it did manage to light it would be very short lived.

I'd suggest way lower than 10psi if you decide to pressurize it.
The oil will thin out a bunch when it gets warm and will leak out easier then.
My suggestion is to drive it and check. Then if it seems good, check the oil level at 100, 1000, and 3000 miles.

A bit more info, https://www.motortrend.com/news/lucid-m ... ive-motor/

ama wrote: ↑Mon May 13, 2024 3:09 pm There are existing modules you can buy on aliexpress to just cut and solder on, instead of making your own.

Are they any good / last?

How available are the 900 transaxles? You could likely adapt a motor to fit in the oil pan area but you might put too much power through it to last.

I just ordered a batch of 5. The DRV103U IC's were pre-ordered already & in. Should arrive in about 2 weeks.

Price went up, they're about $30 each with shipping and the pre-ordered IC costs.

Well it's better than nothing and will likely do the job for what I need. It's also probably worth noting that entry level stuff is absolutely nothing to be ashamed of or shunned by those who have access to higher level stuff. Might be more helpful/constructive to choose words that are less elitist...

Next questions, chat GPT answers: How does someone add a chatGPT chat not bot to their website? Can it reference the wiki on the website or does it need to be updated manually as new info is entered into the wiki? Chatgpt: Adding a ChatGPT chatbot to a website typically involves embedding it using H...

Gemini (Google) claims to be able to do a lot. But it falls flat after you spend a bunch of time doing work & trying. It also forgets what you previously shared with it 5 minutes ago. Its multimodal for input and output (different communication formats like text, images, etc.) but tells you it c...

JLCPCB does cnc work now. You can setup a commission based on your design there if you want. myrav4ev wants you to login to look at pictures. Not everyone wants an account. The design could be modified to have an o-ring on the OD of the plug. If threading that bore in the housing is an option / easy...

This leaves the inevitable curse of open source... anyone who can figure it out doesn't need to document it, and anyone who can't figure it out can't document it. So, nothing is ever thoroughly documented. :p strength in numbers folks Strength In Numbers !!! I don't want to get too off topic, but w...

Strange things happen. From looking at your pictures it's oriented 90° to how it would normally be, right?

What are the chances that an air pocket ends up stuck up top?

I'd be surprised if cool temps threw a limp mode.

I was going to only spend 30 min on it but got stuck in it. image.png Getting rid of the heatsink planes made a big difference. I was able to shift things around and tighten up the traces for frequency and pwm delay a lot. The ground plane is almost completely solid except for 1 duty cycle reference...

This is the simulation I was doing to find reasonable resistors for the gate as well as for testing the zener to protect the p mosfet. https://everycircuit.com/circuit/4697508156276736 The green trace there is watching VGS. There's a switch to swap between 12v & 24v. This runs at 25kHz. Its look...

I'm not sure why they assigned 4 part numbers, it's 2 variants with different assembly feed packaging...and screwed up pricing. $2.47 for the 1.5 amp version without a heatsink. $4.64 for the 3 amp heatsink version. The heatsink on the DRV103 is required to be separate from the ground plane. It look...

I’m having a problem where after a couple of miles the inverter slows me down to a crawl for a min or two and then I can accelerate hard again for another couple of miles. ideas anyone? Replying here to not clutter up the gen 3 development thread. Have you logged temps while driving & accelerat...

Finally got around to installing into the inverter (V0.0.3 board) and see here there might be some TMPHS issues. -R13 is a pull down resistor for the T_SINK input. This is at 3K3 in V0.0.1 but unsure if this is ideal. There are 2 plated thru holes on each side of R13 to use to make testing the idea...

Brake boosters are supposed to hold enough vacuum at least a few presses of the brake pedal to help you push the brake. If it kicks on every 2 minutes that means you have a leak and your pump likely won't last very long. Our your vacuum switch doesn't have much hysteresis. A reserve tank will lessen...

JLC just sent me an updated invoice for the DRV103H ICs I pre-ordered. They are about 3x the cost from what they were supposed to be. Screenshot_20240428_060450_Samsung Internet.jpg Screenshot_20240428_062950_Gmail.jpg I requested a quote for the 4 variants of this IC to be able to make a better inf...

Im going to do the P Mosfet route. Only downside i see is a bit of cost and board space. Yeah, I'll take you up on that. I'll pm you my contact info soon. Might be a few days before I get back to working on this. Edit, I don't think it's worth going through all that if it's the non heatsink version....

Zieg wrote: ↑Fri Apr 26, 2024 5:24 pm ...I don't have a lot of testing hours on it yet, but so far so good with the 11ohm contactors.

That contactor is 1.27A with 11 ohms @ 14v.

Is that the heatsink version of the DRV103 on the board?

Do you have a spare board you could test with your Pacifica contactors?