[Jay]’s Chevy S-10 electric conversion needed new batteries. The conversion was originally done with a bank of lead acids underneath the truck bed. With lithium battery factories so large they can boost an entire state’s economy being built, [Jay] safely assumed that it just wasn’t worth it to spend the money to replace it with a new set of the same.
You should remember the beginnings of this story from our coverage nearly a year ago. Being the kind of clever you’d expect from someone who did their own EV conversion, he purchased a totaled (yet nearly new) Nissan Leaf with its batteries intact. It took a little extra work, but after parting out the car and salvaging the battery packs for himself he came out ahead of both a new set of replacement lead acids and an equivalent set of lithium cells.
He has just completed the first test drives with the conversion, having built 48 Leaf cells into blocks resembling the volumes the old batteries occupied. He had to add some additional battery management, but right-off-the-bat, the conversion netted him more amps and 650lbs (295kg) less weight for the same power. Nice!
We linked to all the posts tagged leaf on [Jay]’s blog. There’s a lot going on, and the articles aren’t all linked to each other. It’s a really cool build and there are definitely tricks to learn throughout the whole process. If you have an hour to kill, [Jay] recorded the entire 26-hour process in a 66-minute video that is embedded below. It’s fun to watch him build up and mount the different modules and gives you a deep appreciation for his devotion to the project.
Everybody loves cheap stuff, and we hate telling everyone about coupon codes. That said, TI has a new LaunchPad development board they’re promoting. It’s based on the MSP432, the ARM extension of their MSP430 line. The MSP432 is an ARM Cortex M4F, low power, and planned for production later this year.
Here’s your daily CES garbage post. Through a collaboration between Sony and Nissan, a car has become a video game controller controller. A controller plugs into the ODB II port, reads throttle, brake, and steering wheel positions (and buttons on the dash/steering wheel, I guess), and translates that into controller input for a PlayStation 4. What games do they play with a car? You would think Gran Turismo, Rocket League, or other games with cars in them. Nope. Football.
Dangerous Prototypes is a legal Chinese company! [Ian] didn’t say anything about the process about becoming a legal Chinese company because he wrote a blog post, not a book. Shenzhen Dangerous Prototypes Electronics Technology Limited allows them to have an office in the Shenzhen electronics market, hire local and foreign hackers, host Hacker Camp Shenzhen, and allow people to apply for ‘Authorized Authority’ visa letters for the people who need them. Great news for a great company.
The Forge hackerspace in Greensboro, NC is growing. In just over a year they have 160 members and they’ve already outgrown their 3,400 square foot space. Now they’re moving to a larger space that’s twice the size and they’re looking for donations.
People have been taking old iPad screens and turning them into HDMI displays for years now. [Dave] got his mitts on a panel from a Macbook Pro 17″, and turned it into a monitor. It required a $50 LVDS adapter, but the end result is great – a 1920×1200 panel that looks pretty good.
The first question to pop into our heads was why? And that’s because Nissan is a major sponsor of UEFA Champions League. From there, it became why not? We love the companies that get their hands dirty on a hacking level, and actually do something instead of just funneling money into your standard billboard advertising — it’s just more fun this way.
The second question you should be asking yourself is how do you play soccer using a car? Well, it’s pretty simple. Steering is your left and right controls, the indicator switch is forward and backward, the windshield wipers kick the ball, a steering wheel button lets you run faster, the brake pedal passes the ball, and the gas pedal shoots. Simple right? As one of the prototype testers describes:
It’s kinda like tapping your head and rubbing your stomach at the same time, it really messes your head up — but it’s really enjoyable when you get it right.
[Dave] just can’t seem to get enough of modifying his new car. Where he lives, it’s typically dark on his ride home from work and he finds himself dropping things on the floor of his car all too often. Nissan decided not to include lighting in the Juke’s foot well or glove box, so [Dave] decided that he needed to rectify the situation.
As you might have noticed by his previous tinkering, [Dave] is a big fan of LEDs and ATTiny microcontrollers. He added some Lego-supported LEDs to the driver and passenger side foot wells, installing an additional light in the glove box while he was at it.
The Juke had a couple of usable blank spots on the dashboard, so [Dave] installed a pair of capacitive touch sensors and a small switch into one of the open slots. When touched, the top-most capacitive pin pair ramps up the foot well lights, while the lower pair turns on the LEDs in the glove box. The switch at the bottom is used to toggle on a light in the back seat which he installed a while back.
It’s a simple addition, but it makes all the difference when he is hunting around on the floor in the dark. We are a bit surprised by how many amenities are missing from the Juke, but tweaking them to his liking seems to keep [Dave] happily occupied.
Continue reading to see a short demo video of his interior lights in action.
[Dave] spiced up his new 2012 Nissan Juke with a little tail-light amendment. You can see that outlining the rim of the light enclosure is a series of dots. This is an LED strip that he added to augment the brake lights. It’s glued in place, and features side emitting LEDs so that the light will be focused behind the car.
To control the strip he’s using an ATtiny85 microcontroller. It’s the chip on the right, and an optoisolator next to it protects it from the 12V vehicle power which drives the strip (via a MOSFET), and acts as a trigger when the brake pedal is pressed. He wrote a few effects into the firmware. When the lights are turned on, the strip fades up to 75% over about eight seconds. When the brake pedal is pressed they go to 100%. Check out the video after the break (it seems a little weird to us, as the video runs 18 seconds but the audio keeps going… YMMV).
We’ve seen a couple of tail light concepts that flash the brake lights when you stomp on the pedal. Unfortunately the Juke (and all other cars as far as we know) don’t have functionality built-in to sense when you’ve really given the brake a sudden jolt. It makes us wonder if this info could be gleaned from the CANbus? Continue reading “LED strip and uC add some flash to your tail lights”→