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.
Search found 301 matches
- Thu May 09, 2024 4:34 pm
- Forum: General
- Topic: DIY Economiser for OEM Contactors
- Replies: 92
- Views: 7546
- Wed May 08, 2024 10:39 pm
- Forum: General
- Topic: CAD Models
- Replies: 9
- Views: 1295
Re: CAD Models
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...
- Mon May 06, 2024 10:31 pm
- Forum: General
- Topic: Improve documentation with help of AI
- Replies: 4
- Views: 278
Re: Improve documentation with help of AI
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...
- Mon May 06, 2024 8:57 pm
- Forum: General
- Topic: Improve documentation with help of AI
- Replies: 4
- Views: 278
Re: Improve documentation with help of AI
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...
- Mon May 06, 2024 12:49 pm
- Forum: Tesla
- Topic: Tesla Large Drive Unit (LDU) Motor Teardown and maintenance
- Replies: 492
- Views: 346067
Re: Tesla Large Drive Unit (LDU) Motor Teardown and maintenance
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...
- Mon May 06, 2024 11:42 am
- Forum: Projects
- Topic: 1984 Voltswagen Rabbit Prius Gen 3 ZOMBIE
- Replies: 424
- Views: 32983
Re: 1984 Voltswagen Rabbit Prius Gen 3 ZOMBIE
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...
- Thu May 02, 2024 8:27 pm
- Forum: Nissan
- Topic: Nissan Leaf Gen3 inverter
- Replies: 245
- Views: 73804
Re: Nissan Leaf Gen3 inverter
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.
What are the chances that an air pocket ends up stuck up top?
I'd be surprised if cool temps threw a limp mode.
- Thu May 02, 2024 3:16 pm
- Forum: General
- Topic: DIY Economiser for OEM Contactors
- Replies: 92
- Views: 7546
Re: DIY Economiser for OEM Contactors
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...
- Thu May 02, 2024 11:04 am
- Forum: General
- Topic: DIY Economiser for OEM Contactors
- Replies: 92
- Views: 7546
Re: DIY Economiser for OEM Contactors
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...
- Thu May 02, 2024 2:38 am
- Forum: General
- Topic: DIY Economiser for OEM Contactors
- Replies: 92
- Views: 7546
Re: DIY Economiser for OEM Contactors
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...
- Wed May 01, 2024 9:38 am
- Forum: Nissan
- Topic: Nissan Leaf Gen3 inverter
- Replies: 245
- Views: 73804
Re: Nissan Leaf Gen3 inverter
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...
- Tue Apr 30, 2024 7:28 pm
- Forum: Nissan
- Topic: Nissan Leaf Gen3 Drop-in board
- Replies: 41
- Views: 3258
Re: Nissan Leaf Gen3 Drop-in board
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...
- Sun Apr 28, 2024 11:35 pm
- Forum: General
- Topic: Brake servo Vacuum hold time.
- Replies: 4
- Views: 422
Re: Brake servo Vacuum hold time.
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...
- Sun Apr 28, 2024 10:36 am
- Forum: General
- Topic: DIY Economiser for OEM Contactors
- Replies: 92
- Views: 7546
Re: DIY Economiser for OEM Contactors
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...
- Sat Apr 27, 2024 12:28 am
- Forum: General
- Topic: DIY Economiser for OEM Contactors
- Replies: 92
- Views: 7546
Re: DIY Economiser for OEM Contactors
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....
- Fri Apr 26, 2024 5:49 pm
- Forum: General
- Topic: DIY Economiser for OEM Contactors
- Replies: 92
- Views: 7546
Re: DIY Economiser for OEM 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?
- Fri Apr 26, 2024 5:01 pm
- Forum: General
- Topic: DIY Economiser for OEM Contactors
- Replies: 92
- Views: 7546
Re: DIY Economiser for OEM Contactors
This board is setup for the Powerpad SO-8 which has a thermal pad that gets soldered to the board. Its higher heat dissipation means it can carry more current. The normal SO-8 (non-powerpad version) is also drop in for this board but it doesn't have the heatsink, so only rated for 1.5A. The DRV103H ...
- Fri Apr 26, 2024 1:29 pm
- Forum: General
- Topic: DIY Economiser for OEM Contactors
- Replies: 92
- Views: 7546
Re: DIY Economiser for OEM Contactors
I'm looking for feedback on contactor coil resistance. One of the contactors I see the most is the EV200AAANA. This has an economizer built in but has a coil resistance of 3.14 ohms for 4.6 amps at 14v. This is out of the range of the DRV103H, Over Current Fault An over-current fault occurs when the...
- Fri Apr 26, 2024 12:27 pm
- Forum: General
- Topic: DIY Economiser for OEM Contactors
- Replies: 92
- Views: 7546
Re: DIY Economiser for OEM Contactors
I'm ordering a batch of 5 to test, I just pre-ordered the DRV103 chips.
I need to find a couple contactors without economizers to test with, even if their high voltage contacts are shot. Anyone know a part number / vehicle for 3 amp (coil) contactor and maybe where to find them cheap?
I need to find a couple contactors without economizers to test with, even if their high voltage contacts are shot. Anyone know a part number / vehicle for 3 amp (coil) contactor and maybe where to find them cheap?
- Thu Apr 25, 2024 4:06 pm
- Forum: General
- Topic: DIY Economiser for OEM Contactors
- Replies: 92
- Views: 7546
Re: DIY Economiser for OEM Contactors
When you say you have to pre order the DRV chip, do they still solder it or is it shipped loose? And is that included in the $15? They solder it if you pre order it. There's a minimum qty of 5 boards from JLC. It was a bit over $70 for 5 completely populated boards, then add shipping and tax. You c...
- Thu Apr 25, 2024 2:11 pm
- Forum: General
- Topic: DIY Economiser for OEM Contactors
- Replies: 92
- Views: 7546
Re: DIY Economiser for OEM Contactors
V0.0 of this is done but not tested yet. https://github.com/jrbe/2-Coil-Economizer-PCB Allows different settings with solder jumpers. They are about $15USD each fully populated. You will have to pre order the drv103 chips from JLC though. PCB Editor.PNG Top Bare.PNG Bottom.PNG Top W Components.PNG i...
- Tue Apr 23, 2024 12:23 pm
- Forum: Tesla
- Topic: Changing Acceleration Profile while running
- Replies: 3
- Views: 464
Re: Changing Acceleration Profile while running
....What if the acceleration profile can be change with an ECO/Sport mode buttons I always saw this as a gimmick. Give a throttle profile that makes a vehicle feel very powerful but drop your throttle granularity up top. Feels fast but not as smooth to drive. Pedal remap devices can help correct po...
- Sat Apr 20, 2024 6:39 pm
- Forum: Tesla
- Topic: Tesla Large Drive Unit (LDU) Motor Teardown and maintenance
- Replies: 492
- Views: 346067
Re: Tesla Large Drive Unit (LDU) Motor Teardown and maintenance
Is it common for the forum to mark all of a users posts as deleted if they leave?
If not, I'd guess he started a rebuilding service for these and decided to take his info with him - but I have no idea for sure.
- Fri Apr 19, 2024 2:20 pm
- Forum: General
- Topic: DIY Economiser for OEM Contactors
- Replies: 92
- Views: 7546
Re: DIY Economiser for OEM Contactors
I've been slowly working on this between other things. This s what I have currently. The duty cycle is selectable with solder jumpers. 0 = 14.3% 1 = 17% 2 = 19.75% 3 = 21.8% 4 = 23.9% 5 = 26% 6 = 28% My thought is to set this up with 3 solder jumpers shorted (that can be cut to open) to default to 2...
- Mon Apr 15, 2024 10:25 am
- Forum: Projects
- Topic: [Driving] Homebuilt Locost 7 - from Motorcycle engine to Leaf power!
- Replies: 51
- Views: 9733
Re: [First Drive] Homebuilt Locost 7 - from Motorcycle engine to Leaf power!
Did my first (very short) drive today! Congratulations! I'm a huge fan of lightweight, this looks like a blast to drive. The wheel alignment was a challenge but I think I got it close enough for now. Measuring and adjusting caster was quite a challenge, next time I might invest in some turn plates ...