Search found 5078 matches

by pythoncoder
Fri Apr 16, 2021 11:38 am
Forum: ESP32 boards
Topic: ESP-Now support for ESP32 (and ESP8266)
Replies: 67
Views: 7974

Re: ESP-Now support for ESP32 (and ESP8266)

...I'm not sure if it is useful to handle such a small delay with asyncio. Fair point. A non-sync send() returns in less than a millisecond. As the ESP-Now docs say, these responses come from very low down in the network stack and don't guarantee the message has been or will ever be received by an ...
by pythoncoder
Fri Apr 16, 2021 11:30 am
Forum: General Discussion and Questions
Topic: Installing uasyncio V3
Replies: 4
Views: 237

Re: Installing uasyncio V3

upip is intended to run on a device with a network connection. For non-networked targets there is micropip which runs under CPython and enables libraries to be installed to a PC's filesystem: the result can then be copied to the target's filesystem.
by pythoncoder
Fri Apr 16, 2021 11:26 am
Forum: ESP32 boards
Topic: DAC Problem
Replies: 3
Views: 121

Re: DAC Problem

The other option is to use a host with a decent DAC such as a Pyboard. Note that, in my testing, the ESP32 DAC is also adrift at the high end of its range.
by pythoncoder
Thu Apr 15, 2021 7:46 am
Forum: General Discussion and Questions
Topic: Fade 1 image to show another.
Replies: 6
Views: 302

GC9A01 display driver

OK, so the question is whether anyone has written a MicroPython driver for the GC9A01 display. I'm not aware of one, and a forum search draws a blank. You may have to DIY. This usually involves porting Arduino C code to MicroPython, a task that requires familiarity with low level coding in both lang...
by pythoncoder
Thu Apr 15, 2021 7:37 am
Forum: MicroPython pyboard
Topic: Input voltage limit, V+ as output, and actuator power supply options
Replies: 4
Views: 167

Re: Input voltage limit, V+ as output, and actuator power supply options

The two V+ pins are connected together so what you're suggesting would work. However that is not how I'd wire it as the current for your peripherals would pass through the Pyboard's PCB traces. If high currents are involved - and you mentioned actuators - this is not a good idea. Better to power the...
by pythoncoder
Thu Apr 15, 2021 7:30 am
Forum: ESP8266 boards
Topic: Difference between print() and uart.write()
Replies: 4
Views: 167

Re: Difference between print() and uart.write()

I don't really understand what you're doing here, perhaps you could clarify. The purpose of print() and uart.write() are entirely different. This is a session on a Pyboard: >>> from pyb import UART >>> uart = UART(1) >>> uart.write(b'\xff\xfd\x18') 3 >>> uart.write returns 3 because 3 bytes were tra...
by pythoncoder
Thu Apr 15, 2021 7:21 am
Forum: ESP32 boards
Topic: ESP-Now support for ESP32 (and ESP8266)
Replies: 67
Views: 7974

Re: ESP-Now support for ESP32 (and ESP8266)

@glenn20 This looks great and you've written some excellent docs :D Re uasyncio support, is it possible to instantiate a StreamWriter associated with a specific peer? This only makes sense where the underlying send has sync=True - otherwise you'd just use a synchronous send . But I can see a use cas...
by pythoncoder
Wed Apr 14, 2021 12:14 pm
Forum: MicroPython pyboard
Topic: Input voltage limit, V+ as output, and actuator power supply options
Replies: 4
Views: 167

Re: Input voltage limit, V+ as output, and actuator power supply options

I'd never spotted that discrepancy, believing 16V was the limit on a Pyboard 1.x. The voltage regulator is rated to 16V and has thermal shutdown, so nothing will go bang, but whether the regulator will start to shut down at 16V depends on factors such as whether you draw power from 3V3, on PCB layou...
by pythoncoder
Wed Apr 14, 2021 9:25 am
Forum: General Discussion and Questions
Topic: Fade 1 image to show another.
Replies: 6
Views: 302

Re: Fade 1 image to show another.

You might be more likely to get a response if you told us what hardware you plan to use: display type and host device.
by pythoncoder
Wed Apr 14, 2021 9:22 am
Forum: General Discussion and Questions
Topic: Installing uasyncio V3
Replies: 4
Views: 237

Re: Installing uasyncio V3

In general there is no need to compile from source, unless you want to use "advanced" features like frozen bytecode. Daily builds are available here - simply download and install the latest "unstable" build. Despite the name, automated testing ensures that problems with these builds are very rare. A...