Comments on: 3 cent PMS150C MCU driving 300 WS2812B LED’s

By: Anders

Anders — Thu, 27 Apr 2023 11:20:05 +0000

In reply to Kum.

Anything over 5.5V will probably lead it to an untimely smokey death.
Here’s the datasheet: https://datasheet.lcsc.com/lcsc/1810261541_PADAUK-Tech-PMS150C-U06_C168658.pdf

You should be able to get a regulator that has a quiescent current at least down in the microamp range – and the PMS150 will run at 3.4V->4.2V (just not as fast).

By: Kum

Kum — Thu, 27 Apr 2023 08:15:24 +0000

In reply to Anders.

How to power pms150, I use 2 lithium ion of 7.4V instead of one battery of 3.4V .
Using voltage regulator consumes current in few milliamps ?
Will the pms chip run at 7.4 V ?

By: Anders

Anders — Wed, 22 Dec 2021 04:49:24 +0000

In reply to Saharesp.

I do have some nrf24l01 code running on a PMS171b and a 6502 – it’s basically just SPI-bitbanging the registers. Currently it does mean you have to get a bit familiar with the datasheet 🙂
Soon* I will give it a writeup and maybe put something on youtube. First I need to show the world that even a CPU from 1975 can rainbow shiny lights… WS2812B control is coming to the 6502!

By: Anders

Anders — Wed, 22 Dec 2021 04:36:53 +0000

In reply to Marcio.

I have yet to find anything in the datasheet that doesn’t mostly match – doesn’t mean you get the same thing as an ATTiny10. LCSC seems to have stopped keeping PMS150C in stock and I think it’s been superceeded by the PMS150D- I suggest you contact the manufacturer directly for guarantees.
It’s OTP and that’s no problem – you just need to use the ICE (Emulator) while debugging.

By: Saharesp

Saharesp — Thu, 25 Nov 2021 14:29:16 +0000

Anders says: I have a feeling my next project might involve controlling the nrf24L01+ SI24R01 2.4Ghz radio module or maybe a budget Raspberry Pi module.
You have project with nrf24L01?

By: Marcio

Marcio — Wed, 24 Nov 2021 12:37:12 +0000

Thank you for this article Anders, but I have some doubts:
-Is this Padauk PMS150C reliable?
-Is it active? Because I´m considering using it in a project and I need it for at least five years from now;
-About the program memory it’s an OTP (One Time Programmable) memory which means I can program and debug only once (?!), so how do I get around this?

By: Knight Sun

Knight Sun — Fri, 16 Apr 2021 04:05:59 +0000

In reply to Anders. Thanks for the reply. Sorry for the delay(5 months); Work is a little crazy now. I am not very good with code but I don't see a button command. Also do you have schematic of your project and where can I get the chips and programmers?

By: Anders

Anders — Mon, 30 Nov 2020 12:28:24 +0000

In reply to Knight Sun.

Yeah, that’s no problem – basically anything that’s not RAM-intensive like graphics that don’t follow a specific pattern are doable.

By: Knight Sun

Knight Sun — Sat, 21 Nov 2020 14:13:19 +0000

Can you program the micro to do 0 to 255 and in a wave and some all on? One of my projects was to make safety gear based off ws2812b led for first responders, oil & gas, and construction workers police and anyone really. I attached a strip to my hat and I can’t count the number of people who were interested in getting one. just to walk there dogs at night.
having a OTP chip and push button embedded in the strip would make manufacturing more affordable.

https://www.youtube.com/watch?v=c3XXYpT672c

By: Anders

Anders — Sun, 17 May 2020 08:57:43 +0000

In reply to Tony Flemin.

I used the Official PDK-programmer. There is an open toolchain with an open source programmer. Doesn’t offer debugging though.
https://github.com/free-pdk/easy-pdk-programmer-hardware