Search found 15 matches

by RobH
Fri Feb 15, 2019 1:49 pm
Forum: Drivers for External Components
Topic: Anyone working on a MAX7219 8x8 LED matrix display library?
Replies: 26
Views: 9168

Re: Anyone working on a MAX7219 8x8 LED matrix display library?

@mcauser, suggestion for enhancement. I have a couple of PCBs with a single monochrome 8x8 matrix and a max7219 'outside' of the PCB, probably the same as you show in a picture you posted in this forum (1 Oct 2017). With 3 of these I would like to build a 24(hor.) x 8(vert.) matrix by mounting these...
by RobH
Sun Nov 18, 2018 7:40 pm
Forum: ESP8266 boards
Topic: ESP8266 configuring AP channel
Replies: 2
Views: 232

Re: ESP8266 configuring AP channel

Aha! I wasn't aware of this restriction. Thanks! It explains what I experienced. Apart from the AP I have also a STA active. And when there can be only 1 WLAN channel it will be dictated by the AP to which the STA is connected. Some more experimenting showed that deactivating or even only disconnect...
by RobH
Sun Nov 18, 2018 3:34 pm
Forum: ESP8266 boards
Topic: ESP8266 configuring AP channel
Replies: 2
Views: 232

ESP8266 configuring AP channel

MicroPython v1.9.4-272-g46091b8a on 2018-07-18; ESP module with ESP8266 In Access Point mode my ESP8266 (NODEMCU) refuses to accept my preferred WLAN channel. The access point works fine otherwise. Whatever I specify for channel it sticks to channel 3. See the console log below. Am I doing something...
by RobH
Mon Aug 27, 2018 6:35 pm
Forum: General Discussion and Questions
Topic: connecting to hidden WLAN
Replies: 0
Views: 229

connecting to hidden WLAN

<t>I have a setup with one esp8266 as WLAN Access Point ('server') and another esp8266 as WLAN station ('client'). <br/> The connection by the client is setup successfully with SSID and password and the client application can send datagrams to the server which are echoed by the server and the client...
by RobH
Sun Jul 01, 2018 6:55 pm
Forum: Other Boards
Topic: [Sonoff S20] Micropython on Sonoff S20
Replies: 2
Views: 458

Re: [Sonoff S20] Micropython on Sonoff S20

Thanks Peter, that did the trick! Your command comes close to mine, with 2 differences: (1) I did not use "--verify", but esptool.py (v2.4.0) reports: Verifying just-written flash... (This option is deprecated, flash contents are now always read back after flashing.) So this parameter may not be the...
by RobH
Sat Jun 30, 2018 2:20 pm
Forum: Other Boards
Topic: [Sonoff S20] Micropython on Sonoff S20
Replies: 2
Views: 458

[Sonoff S20] Micropython on Sonoff S20

I feel myself comfortable with Micropython on ESP8266, ESP32 and PyBoards and would like to load and run one of my python programs on a Sonoff S20. Since a Sonoff S20 reports itself as an ESP8266EX with 1MB, I thought I could load a regular esp8266-image of Micropython. Esptool.py seems to work like...
by RobH
Sat Apr 14, 2018 10:04 am
Forum: Drivers for External Components
Topic: Anyone working on a MAX7219 8x8 LED matrix display library?
Replies: 26
Views: 9168

Re: Anyone working on a MAX7219 8x8 LED matrix display library?

I must have made a mistake (maybe more that one!) with my initial attempts! After migrating the program which worked on the PyBoard to the ESP32 and ESP8266 it works on these platforms too! On the ESP8266 both with hardware and software SPI, on the ESP32 only sw-SPI. I'll try to find out the problem...
by RobH
Thu Apr 12, 2018 12:29 pm
Forum: Drivers for External Components
Topic: Anyone working on a MAX7219 8x8 LED matrix display library?
Replies: 26
Views: 9168

Re: Anyone working on a MAX7219 8x8 LED matrix display library?

Just tested the quad 8x8 display on a PyBoard: both text display and scrolling work fine for this combination! :D
Rob.
by RobH
Thu Apr 12, 2018 7:39 am
Forum: Drivers for External Components
Topic: Anyone working on a MAX7219 8x8 LED matrix display library?
Replies: 26
Views: 9168

Re: Anyone working on a MAX7219 8x8 LED matrix display library?

Sorry for the duplicate posting... overlooked 'next' pages.
@mcauser: Thanks for pointing me to the superfluous equal signs, but removing made no difference... searching further.