MicroPython Forum (Archive)

Hi; OK, understood and no problem at all, it's your board and as you say you can't please all of the people.... Rather than just breadboarding & development, a small production run for me would be be between 1 and 100 pieces, so maybe 'production run' is not the right term and I should use the term...

I live built TinyPICO rev4 today on my stream... https://www.youtube.com/watch?v=zu2azi7buR0 It has PSRAM on the back... @Matt is going to have a play with that tonight at the Melbourne MicroPython meetup. http://3sprockets.com.au/um/projects/TinyPICO/TinyPICO_Rev4_Proant2.gif I've also been working...

Hi; Yes, that is precisely the problem I have with the weemos and similar eps8266 / esp32 breakout boards, they all have onboard USB which results in this power drain when running on battery power, and is fine if all you ever use them for is breadboarding ! The thing is, (maybe like others too), I ...

After more digging my bottleneck on the TinyPICO in deep sleep current draw is the CP2104 :( It pulls approx 90uA and there doesn't seem to be an easy way to "un-power" it when only running off battery. I ripped the CP2104 off one of my test boards as I am now under 10uA in deep sleep if I bypass my...

@loboris Thanks for that info... the HT7833 looks great! I've added some to my next LCSC order :-) I did some digging, and I still have the ULP on or at least sensors on, so I am actually in 100uA sleep mode on the PICO... I can't see how (using the Arduino IDE anyway) to get the PICO into the next ...

Hey devnull, With the lowest sleep I was able to get the PICO TinyPICO pulls approx 160uA from battery and approx 7mA from USB. I'm honestly unsure what that mode is - I am assuming it's the RTC timer + RTC memory mode, as I am using both in the tests to wake it up and remember sleep count, but it c...

So lots of progress has been made on the TinyPICO... so I thought I'd post a link to the youtube playlist where I am vlogging the progress of the board iterations. https://www.youtube.com/playlist?list=PL6F17pWypPy_9XeEP-wmUg6gDfEC9qk-r I have made lots of changes to rev2 even since my rev2 livestre...

@seonr The modules are quite expensive, I don't understand why would shipping to Australia be so much higher than to the rest of the world. I've got 10 pieces for 67.4 US$ and FREE SHIPPING (to EU). Cheapest I can find for the shielded is AUDS$10.9 each from Banggood. That's better than the $15 fro...

... Adding components on the second side makes assembly super painful... I agree. However, if the micro module is used you could place it as the only component on the bottom side and have the full upper side area free for other componnents. That should be easy to assemble. It's just an idea, I full...

@seonr I think WiFi will not work well with your current board design (the antenna layout!). Maybe you could use a small (13.1x18x8 mm) ESP32-Micro module (or the shielded version ) to avoid antenna problems. The board would have a simpler design (with maybe more componnents on the bottom side, psR...