Search found 319 matches

by loboris
Fri Oct 19, 2018 6:38 pm
Forum: Other Boards
Topic: persistent memory?!?
Replies: 6
Views: 1186

Re: persistent memory?!?

RTC memory seems not to work on Odroid Go with ESP32 LoBo v3.2.24 Values set with rtc.write_string() are deleted after soft reset. Does the Odroid Go has NVRAM? It has 4MB PSRAM... Is it battery buffered RAM ? Any how to read/write it from micropython? RTC memory is preserved only after deepsleep r...
by loboris
Fri Oct 12, 2018 6:57 pm
Forum: Drivers for External Components
Topic: Driver for LCDs using Hitachi HD44780U controller
Replies: 4
Views: 1279

Re: Driver for LCDs using Hitachi HD44780U controller

This forum has a Search button, why not use it to search for "HD44780" ?
by loboris
Sat Oct 06, 2018 8:21 am
Forum: General Discussion and Questions
Topic: Use micropython to do dead simple "over-the-air" code updates
Replies: 34
Views: 6204

Re: Use micropython to do dead simple

jickster wrote:
Sat Oct 06, 2018 5:26 am
Updating the firmware of micropython cannot be done while running micropython.
On ESP32 boards it is an easy process and it is implemented in my MicroPython port.
by loboris
Tue Sep 18, 2018 6:31 am
Forum: Drivers for External Components
Topic: GPS Module Gyneo6mv2
Replies: 4
Views: 1707

Re: GPS Module Gyneo6mv2

by loboris
Sun Sep 16, 2018 7:03 pm
Forum: General Discussion and Questions
Topic: microPython board with GPS and GSM/GPRS/LTE ?!?
Replies: 7
Views: 2916

Re: microPython board with GPS and GSM/GPRS/LTE ?!?

You can easily use any ESP32 board (or other MicroPython boards) with any of GSM/GPRS/3G/GPS mini dev boards like SIM5380E , SIM808 , SIM868 ... They are cheap and works wery well (on some you have to be carefull with Tx/Rx levels). Only Tx, Rx, GND and power are needed to interface them. I've teste...
by loboris
Wed Sep 12, 2018 9:41 am
Forum: Other Boards
Topic: [ESP32] New dev board
Replies: 48
Views: 7214

Re: [ESP32] New dev board

@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). Another disign issue I've noticed. You are routing pin #16 to the board connector. This pin is used a...
by loboris
Wed Sep 12, 2018 9:13 am
Forum: Other Boards
Topic: [ESP32] New dev board
Replies: 48
Views: 7214

Re: [ESP32] New dev board

... 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...
by loboris
Wed Sep 12, 2018 7:55 am
Forum: Other Boards
Topic: [ESP32] New dev board
Replies: 48
Views: 7214

Re: [ESP32] New dev board

@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, psRA...
by loboris
Mon Sep 10, 2018 9:36 pm
Forum: Other Boards
Topic: [ESP32] New dev board
Replies: 48
Views: 7214

Re: [ESP32] New dev board

It may be difficult (if not impossible without modifing esp-idf sources) to connect external SPIRAM to ESP32-PICO-D4 even it there is enough room on the board.
It uses GPIOs 16&17 for internal Flash and those pins are used by esp-idf to drive the external SPIRAM.