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My quest for a perfect hybrid vehicle
Browsing All Posts filed under »Firmware«
Integration Jam Session
Njay got the burned bridge rebuilt, tested, and “burned-in” for an hour at 10Amps, so we got together again to finish integrating the system. This time with the 500 kbps I²C bus between the RasPi and the Power Bridges, so that the link is loud and clear. Njay was afraid that such high speeds would […]
Tuning out the glitches
September 20, 2014
WE ARE AT THE FAIRE RIGHT NOW! 🙂 JOIN US! Meanwhile we’ll keep posting the story behind the project… Me and NJay finally got together for a hacking jam session to find out what the heck is going wrong with the I²C comms bus between the RasPi and the Power Bridges. This is where his […]
Vroom vroom
September 19, 2014
ATTENTION: THE Lisbon Mini Maker Faire 2014 OPENS TO THE PUBLIC TOMORROW, SATURDAY. GET YOURSELF REGISTERED ONLINE AS A VISITOR SO YOU DON’T HAVE TO WAIT IN LINE AT THE VENUE. IT’S FREE OF CHARGE, BUT YOU HAVE TO REGISTER FIRST. And now, back to our soap opera. 🙂 The time has come to finally […]
Power bridge status point & To-do list
September 14, 2014
Njay: Status point, so that we both know where things stand. Both bridges have only 1 N-MOSFET connected, via a 100Ohm resistor. This is the configuration that tested the longest time, so I’m sticking with it. The gate resistor on the disconnected FET is removed (there is a pull-down that keeps the FET off). However […]
Power bridges to report temperatures and current
September 11, 2014
Njay: Hi. Right now this is what I’ve got for the I²C registers… eI2cReg_Command = 0, // RW command // Status: b0~b3: heartbeat, b4:over-current eI2cReg_Status = 1, // R status // Speed: speed/direction: b7: direction; b0~6: Speed eI2cReg_Speed = 2, // RW speed // raw diode reading eI2cReg_HBridgeTemp = 3, // R […]
Time is running out
August 31, 2014
Njay: Hi dude. I’ve got some bad news about our little project. I’ve gotten the bridges to work with current limitation, but they don’t read out the actual current for you, and they warm up too much for my taste. I’m going to give them another try, but then I have to give up. Like […]
More I2C register talk
August 29, 2014
Vnevoa: Man, I hate hidden stuff! You’re cooking up an addressing scheme inside another addressing scheme. I don’t like that. Of course I’m doing all the read/write operations by the book, with addressing. That’s one lesson I learned the hard way at Siemens. 😉 I like the serial EEPROM addressing scheme and I’d like to […]
Electronics in repo, I2C register talk
August 28, 2014
Njay: I’m registered at GitHub as nunojay. I’ve cleaned up my files and I’m ready to push, just need permissions on the repo. I renamed the NJAY folder to Electronics, I think it makes more sense. 🙂 Vnevoa: Done! Go ahead. Vnevoa: Cool, I see you’ve uploaded your files! Can you put some README files […]
Add-ons assembling, Bridges finalizing
August 27, 2014
Njay: The add-on board is under assembly. The main chips are still on their way. Njay: I’ve put together the test environment, made some experimental changes to the code to try and read the motoring current, but no luck. I’ll get back to it after I work on some other stuff I have in […]
It rolled!… a few meters.
April 5, 2012
And now, in an exclusive video report just for you the special readers of this blog, we have a very rare sighting of a differential tricycle in the wild… I’m sure you’ve never seen anything like it. It is a very dangerous beast, and if that fierce rotating luminous eye isn’t enough to put the […]
MyOwnHybrid 
September 21, 2014
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