TonyHallo
640cc Uber Pimp
Over on the radio forum on another site came across a discussion using OpenTx with an electronic carburetor used on Stihl saws. Followed this back to originating forum and one thing lead to another while I was on vacation so I have the carb in hand now. It is a Zama carb with 17 mm bore. One fellow has it on a 26 cc engine, an another has it on a 32 cc engine, both two stroke. It is used on 50 cc saws
Fuel flow is controlled by a Seeed Studio XIAO board using Arduino code. The code was written by a fellow that goes by the name of raleighcopter on several forums and GitHub. Others on the site are folks named 1967brutus, Cat1, and Glowgeek, there may others an I've only read though 400 of the 2500 page thread. The project is mainly focused at using the solenoid from the Zama carb in a custom housing to control the fuel flow on gas convert glow engines. It so happens to work with the Zama carb as well. There is also temperature and barometric pressure in the code. A BMP 280 is used to measure the temperature and air pressure near the carburator. The devices are rather small as seen below.
I have limited experience with Arduino so I need to relearn everytime I use it. I have the code downloaded and written on three XIAO boards, that took the better part of half to set the sketch up and .27 seconds to write it. Need to some soldering and get this wired up. As far as I know this is the first conversion done on a four stroke engine, the Zama doesn't come with a spring on the fuel pump membrane so I need to work out a solution for this. The Zama has a rather thin plastic like membrane while the original carburator on the Saito engine looks to be reinforced elastomer.
Fuel flow is controlled by a Seeed Studio XIAO board using Arduino code. The code was written by a fellow that goes by the name of raleighcopter on several forums and GitHub. Others on the site are folks named 1967brutus, Cat1, and Glowgeek, there may others an I've only read though 400 of the 2500 page thread. The project is mainly focused at using the solenoid from the Zama carb in a custom housing to control the fuel flow on gas convert glow engines. It so happens to work with the Zama carb as well. There is also temperature and barometric pressure in the code. A BMP 280 is used to measure the temperature and air pressure near the carburator. The devices are rather small as seen below.
I have limited experience with Arduino so I need to relearn everytime I use it. I have the code downloaded and written on three XIAO boards, that took the better part of half to set the sketch up and .27 seconds to write it. Need to some soldering and get this wired up. As far as I know this is the first conversion done on a four stroke engine, the Zama doesn't come with a spring on the fuel pump membrane so I need to work out a solution for this. The Zama has a rather thin plastic like membrane while the original carburator on the Saito engine looks to be reinforced elastomer.