Connect the CHT to chanel 4, and 3 EGTS to 5..8. Install a 1k-ohm resistor to those 5 channels. Then setup those channels and create a second display page. When you click the encoder, you'll flip to the second page. That page will show CHT/EGTs. You can even show a graph if you use special characters.
Ok... but that's not enough... I need manifold pressure two fuel and all six EGTs and six CHTS. Wowsers! So thats...
- Airspeed
- Oil Temp
- Oil Pres
- Manifold Pressure
- 2x Fuel Level
- 6x EGT
- 6x CHT
It's time to piggyback. First, make two SportVFR PCB boards, install pass-through header pins and snip all but the I2C pins, power and ground. Then piggyback the second GPIO board to the first. Code an I2C slave/master. The original (first) board will handle the basic I/O and display. The second board handles the expanded inputs and send them to the primary board as corrected inputs ready for display.
With two boards, you can support up to 16 analog inputs.
This is a DIY project... You can do it too, go do it!
Hello Bruce very coooool project !
ReplyDeleteI'm a French pilot of ultra light planes and i found your project typing DIY ahrs in google ! I'm not a specialist of electronic but your project seem easy for novices ...Have a good day and i expect you finalise it !
Hello Bruce very coooool project !
ReplyDeleteI'm a French pilot of ultra light planes and i found your project typing DIY ahrs in google ! I'm not a specialist of electronic but your project seem easy for novices ...Have a good day and i expect you finalise it !
Merci!
DeleteThe LCD version does function, but will ultimately require coding to work well. I only know of a few small issues now, but there will be more bugs as it goes through flight testing.
Hello Bruce, Are you still working on this project?
ReplyDeleteNot actively, but it's here and I can answer any questions. I'm very confident it will work. I have an airplane project that I plan to build one for eventually.
ReplyDelete