24 replies to this topic

[Snowbird]

Good luck with it, be interesting to see how it goes, you might end up with orders for pre programmed ones from all the niner owners.

[fixitsan]

Good luck with it, be interesting to see how it goes, you might end up with orders for pre programmed ones from all the niner owners.

 

In theory it ought to work for most other fuel injected bikes, which run in open loop mode during acceleration, as long as I can measure it's intake temperature sensor first !

 

Rather than replace the intake sensor I would prefer to run it in parallel and make it switchable, for in the case of a (perish the thought) failure.

[fixitsan]

You still need a controller for that module as it's just a digipot with i2c interface, controller could be made very small and cheap using pickaxe with ds18b20 digital temp sensor and programmed to suit (for clever folk a bare pic would be cheaper but I'm not clever),the digipot itself would be cheaper off board and on the same board as the pic.

I just remembered I had a Raspberry Pi PICO. I've put some code on it to read the internal temperature sensor and took it outside, it reads close to -2 Celsius. fairly accurate

 

Just need a 5V supply and a plain regular digipot and it should be ready to go. The beauty of the Pi is that it makes adding a small LCD and some buttons childsplay, thanks to all the ready made code in libraries.

 

[/url]PICO temp by Chris Barron, on Flickr">http://PICO temp by Chris Barron, on Flickr

 

 

 

 

For £2 more, you can get the wifi version of the PICO, which could then have a webserver, which, using your mobile phone you could connect to and adjust it's parameters for individual bikes and for riders preferences. Might be fun !

https://thepihut.com...berry-pi-pico-w

Edited by fixitsan, 18 January 2024 - 10:55 pm.

[Snowbird]

For 5v I have several pickaxe based projects on my boat that have worked fine for a few years using just lm7805 regulators with a couple on capacitors either side and a capacitor on the power in of each chip used to decouple, boat has 2 alternators,2 channel solar controller, and shore power battery charger so plenty mess with voltage, load wise both fridge and water pump make lights flicker.
Only thing missing is ignition coils to screw things up.

[fixitsan]

For 5v I have several pickaxe based projects on my boat that have worked fine for a few years using just lm7805 regulators with a couple on capacitors either side and a capacitor on the power in of each chip used to decouple, boat has 2 alternators,2 channel solar controller, and shore power battery charger so plenty mess with voltage, load wise both fridge and water pump make lights flicker.
Only thing missing is ignition coils to screw things up.

I was thinking of just the 7805 plus caps, like you say.