Ascaso Dream PID Electronics (w/full schematics)
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- เผยแพร่เมื่อ 4 มิ.ย. 2024
- A quick and dirty look at the wiring and control electronics of an Ascaso Dream PID. I've traced the PCB out and put up a schematic in the github below. This may be useful if you are ever repairing one of these machines, or if you are simply interested in how a professional espresso control board is laid out.
Github: github.com/techdregs/Ascaso_D...
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00:00 Introduction
00:31 Wiring Overview
03:35 PCB (Power Supply)
04:50 MCU (STM32) and connectors
07:03 Programming port
07:15 Optoisolators and switching
08:50 Comparison with Breville's approach
10:20 Conclusion - วิทยาศาสตร์และเทคโนโลยี
I ran into your video, because I'm about to replace the LED display board in an Ascaso Steel Duo PID. The chip on the daughter board you are mentioning in the video is an AS1115 LED driver that communicates with the STM32 microcontroller over I2C, hence the 4 wires (VCC, GND, SCL and SDA). The chip drives the LEDs and also supports up to 16 keys.
Thank you for sharing.
Thank you for this video and the github repo! The pin 5 triac is used on Steel Duo PID for the steam solenoid as you have suspected.
Did you by any chance make any measurements how the PCB maintains the temperature in the thermoblock whether the pump is running or not? I.e. is it heating more aggresively when it knows that the water is flowing through. I know it's a long shot, but asking doesn't hurt :D
Unfortunately I didn't put a meter on it. However, if you watch the video review I did, I have a wattmeter on it the whole time. Maybe you could infer some things from that when it's sitting vs when it's running. IIRC, it pulled the most power at startup and when steaming. th-cam.com/video/v9q6QxpNd_g/w-d-xo.html
Cool, thank you! I'm a complete newb with electronics tbh - I guess the power draw in watts is split between the pump and the thermoblock and I can calculate the power draw of the pump from it's specifications (it says 65W). The rest is the thermoblock I guess
Yeah, the pump will be pretty negligible compared to the thermoblock, plus you can document when the pump is running vs when it's not. There's also a bit from the solenoid, but again, small in comparison. The rest of the system (the MCU, LEDs, display, etc) will be rounding error in comparison.
I know this sounds crazy, but do you think it is possible to make a weighing scale around 70kg capacity to be transmitted to laptop/phone through cellular connection??
Any help will be appreciated
Yeah, of course. If you look back at my scale projects, I think the only substantial difference would be the mechanical side. Like, you'd obviously need to use a larger load cell and make sure the weighing platform were built with that weight in mind. Beyond that, I don't think the electronics or software would be any different at all. Maybe just some minor adjustments to account for the different value ranges produced by larger mass.
th-cam.com/video/ksemL5_kvDw/w-d-xo.html
th-cam.com/video/cGao4EKNTic/w-d-xo.html
Have you got an email I can contact you on ? I've got an idea for a university project I'm wanting to start on and was wondering if you can help maybe with a prototype, I'll pay ofc for your work ofc.
thetechdregs@gmail.com but fair warning, I'm just a hobbyist with a day job, not a pro.