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I dont have that many pics of every design layout i tried - most pics are on the 2 threads - i do have a draw full of previous versions as it has developed with different nichrome thickness, lengths and various tubes...

I was worried about the intake airhole when i first started messing about with test tubes and glass straws but found you just adjust how much you pack/tamp the inner straw affects airflow far more than any intake hole. Also if your straw touches the bottom of your outer tube you can also adjust...

I have put together some ideas and figures for a DIY kit List of what it would include: RP2040 PCB + firmware installed Screen Rotary dial Mosfet unit Thermocouple lead with ptfe + kapton tape protection Heater: Outer quartz tube + nichrome coil Inner quartz 1mm thick wall tube Inner...

Well im still messing with it - it worked really well with 3 lipos but they got hot fast so stopped that experiment after the first try but the coil got really bright and the rod had a glow to it but even with the butane torch i find maybe 2 hits before a reheat. The video is from the 120w...

I got one of those sherlock pipes for hash/oil - they are quite cool - i like to use it for reclaim as well Anyhows i ran out of butane but had a thought of how to heat up the quartz rod without a torch and use one of the little pwm modules i made - fortunately it has a decent mosfet unit in it...

So i have checked and all ok asking. Would people be interested in a kit form of this like the vapoven diy kit? Not sure on costing just yet as i need to know numbers before i can actually work out like getting 10 outer tubes/pcbs or 100 will be a big difference. It would include a variety of...

I think i have mostly fixed that bug with the hardware adc error and have coded around it. A bit annoyed with myself as i dropped the heater/tube part and the lip hit the lid of a glass jar - the quarts was not as forgiving as the glass and a chip has been taken out of the top - it is still...

Well im confused - im testing with the 4 lipo battery setup and max watts at 90w - 3 or 4 lipos is pretty sweet for on demand - with 4 the batteries just get a bit warm after a while and lasts for ages between recharges. With 3 lipos - they do get a bit warm with back to back session not fully...

That looks good - i suppose if the frequency is high enough all is ok? I have messed with those little pwm boards they are really good and cheap too - there is a version with a dial to make it easier to adjust the frequency or duty

Updated to deal with the fluctuating input voltage - i set the max watts to 80 and the max duty cycle gets adjusted accordingly to try and keep at the correct wattage no matter what the input voltage. Should also compensate for battery sag but if you set the wattage too high for the voltage...

Im not sure how well pwm will work with the little zvs circuits as they create an oscillation which pwm may not be compatible with.

Finished off my desktop replacement - well more my general use device while i play about with better housing as its not tied the mains anymore. The thermocouple cable is on the wrong side side need to rewire that but but otherwise is nice a neat and not a load of wires everywhere. Also only...

Was going a bit mad and went for 4 lipos - test 1 was good So decided to just film the screen on test 2 Gutted already killed one but this happened before with the normal pico and i wasnt sure what went wrong this time im sure the coil just burnt through the ptfe and shorted out the...

Sure its on the other thread but here you go: https://github.com/highvaper/heater-controller

I had a bit of experience with full blown pi's when i started the project off and someone at work i chatted with was a bit of a pico fan so have kind of just rolled with it - the documentation out there is really good too so that always helps. I suspect if i started from scratch i would...

Not just estimates - real time power consumption now - there is a live volt reading and knowing the restance of the element it works it out live - quite cool to watch it adjust power in watts and not the arbitrary level of 0 to 10 for the pwm - there is now a temp/watt graph Yea all regulation...

Up and running off the same power source as the heater That's all the actual components now need to figure out better housing and make some updates to code to enable the buttons and other minor updates.

PCB v2 done and delivered - its a bit bigger than i wanted it to be but it does have a lot on board With the screen and a connector not soldered yet I decided not to have any of the through mount stuff done and will then allow for flexibility when connecting up. Some highlights Built...

DC Gen 2 Dry Herb Heater - under $40 and is amazing value

Check out page 2 of this thread for thermocouple measurement and induction heating issues: https://fuckcombustion.com/threads/bakx-heating-principle-inspired-desktop-vape.54964/page-2 I have had a little dig into IR measurement but it didnt fit my needs.