Search found 356 matches

by mcauser
Thu Apr 04, 2019 11:56 am
Forum: Drivers for External Components
Topic: SPI flash + internal flash + SD card
Replies: 0
Views: 89

SPI flash + internal flash + SD card

I'm working on the VCC-GND F407 ZGT6 mini board definition: https://github.com/mcauser/VCC_GND_F407ZG It comes with a MicroSD card slot and a W25X40BVSNIG SPI Flash IC on SPI1 (4Mbit, 512x8bit, 104 MHz). Looking at the STM32L476DISC board definition, it looks like it sets up a block device using /dr...
by mcauser
Mon Apr 01, 2019 5:18 am
Forum: MicroPython pyboard
Topic: New subforum for Pyboard D?
Replies: 1
Views: 137

New subforum for Pyboard D?

New subforum for Pyboard D?
by mcauser
Mon Mar 11, 2019 4:31 am
Forum: Other Boards
Topic: STM32F407 FSMC memory
Replies: 3
Views: 198

Re: STM32F407 FSMC memory

I ordered one of the 3.2" TFT's which mate with the "Black STM32F407ZET6" TFT/FSMC pins.
It's using the ILI9341 and XPT2046 resistive touch. Looks like it's similar if not the same board.
by mcauser
Mon Mar 11, 2019 4:30 am
Forum: Other Boards
Topic: VCC-GND STM32F407VET6 dev board
Replies: 22
Views: 15443

Re: VCC-GND STM32F407VET6 dev board

I've never seen them for sale with ZET6 chips. Might have been a manufacturing error in your favour! I'm going to have to check each of my boards to make sure they are VET6s and not ZET6s. Edit: They're all VET6s :( Waiting on some nand flash to arrive on the slow boat so I can figure out how to use...
by mcauser
Sun Mar 10, 2019 1:49 pm
Forum: Other Boards
Topic: VCC-GND STM32F407VET6 dev board
Replies: 22
Views: 15443

Re: VCC-GND STM32F407VET6 dev board

Renamed to: https://github.com/mcauser/VCC_GND_F407VE
To make room for: https://github.com/mcauser/VCC_GND_F407ZG

GitHub should have added redirects though...
by mcauser
Fri Mar 08, 2019 3:20 am
Forum: Other Boards
Topic: STM32F407 FSMC memory
Replies: 3
Views: 198

STM32F407 FSMC memory

I have collected a bunch of STM32F4 boards which feature unpopulated footprints for FSMC SRAM/ROM/NOR/NAND/PSRAM memory. * VCC-GND STM32F407ZGT6 Mini - https://github.com/mcauser/VCC_GND_F407ZG * "Black" STM32F407ZGT6 - https://github.com/SpotlightKid/BLACK_F407ZG * "Black" STM32F407ZET6- https://gi...
by mcauser
Wed Feb 13, 2019 9:13 pm
Forum: ESP8266 boards
Topic: Lolin board erase everything from flash
Replies: 6
Views: 335

Re: Lolin board erase everything from flash

If you are worried about fire from a heater that is left on from a crashed board, I’d add a separate failsafe independent circuit which can sever the power in an emergency. Something as simple as an attiny + temp sensor + relay. Or maybe the all in one W1209 board. But it only has a small relay, so ...
by mcauser
Sun Feb 10, 2019 2:24 am
Forum: Other Boards
Topic: [STM32F103] - Porting MicroPython to the "BluePill" board
Replies: 16
Views: 9569

Re: [STM32F103] - Porting MicroPython to the "BluePill" board

I haven't touched it in a while, but I'd really like to get this one working: https://github.com/mcauser/BLUE_BUTTON_F103RET6 Costs 4x more than the $3 "Blue Pill", but gives you 512 KByte Flash over the 64 KByte on the blue pill and a bunch more features and IO. I gave it the name "Blue Button" as ...
by mcauser
Thu Jan 24, 2019 4:06 am
Forum: General Discussion and Questions
Topic: Sensing sound from a speaker
Replies: 9
Views: 389

Re: Sensing sound from a speaker

Sensing sound from a speaker -> Sensing RF from a doorbell transmitter Your doorbell button is most likely a cheap ASK/OOK transmitter, operating on either 315 or 433.92 MHz. I recently made an ESP8266 based project which listens for RF packets emitted from my doorbell and urequest posts them to a ...
by mcauser
Thu Jan 24, 2019 3:56 am
Forum: General Discussion and Questions
Topic: Charging 3,7v LiPo battery
Replies: 6
Views: 309

Re: Charging 3,7v LiPo battery

Another option is to use one of those 18650 power bricks. https://www.aliexpress.com/item/2017-New-Portable-Power-Bank-18650-External-Backup-Battery-Charger-With-Key-Chain-Factory-Price/32828507666.html Consisting of a micro-usb for charging, usb-a for powering your device and comes in various prett...