Search found 88 matches
- Wed Feb 02, 2022 4:58 am
- Forum: Hardware Projects
- Topic: MicroPython based 3D printed drawing robot powered by a TTGO T-Display
- Replies: 14
- Views: 56706
Re: MicroPython based 3D printed drawing robot powered by a TTGO T-Display
I should still have a handful of boards left. Private message me.
- Mon Jan 24, 2022 6:08 pm
- Forum: ESP32 boards
- Topic: error v1.18 build esp32 GENERIC_SPIRAM with user modules
- Replies: 1
- Views: 3376
- Thu Jan 06, 2022 6:38 am
- Forum: ESP32 boards
- Topic: Servo MG996R 180° vs. 360°
- Replies: 3
- Views: 8506
Re: Servo MG996R 180° vs. 360°
A Sailwench servo might work for you. They have rotations of 360° or more.
- Sat Jan 01, 2022 5:30 pm
- Forum: General Discussion and Questions
- Topic: build library error conversion double to float
- Replies: 2
- Views: 8986
Re: build library error conversion double to float
The math library uses doubles for sin and cos. I'll see what I can do to fix this, until then, you can get around the error by changing sin and cos to sinf and cosf if they are supported. Failing that you should be able to cast the results of sin and cos to floats. mp_float_t cosAngle = cosf(angle);...
- Fri Dec 10, 2021 10:17 pm
- Forum: ESP32 boards
- Topic: Partitions-ota.csv change error
- Replies: 5
- Views: 5374
Re: Partitions-ota.csv change error
The restriction is part of the ESP32 design. https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/partition-tables.html says "Partitions of type app have to be placed at offsets aligned to 0x10000 (64K)." ota_0, app, ota_0, 0x10000, 0x190000, ota_1, app, ota_1, 0x1a0000, 0x190000, ...
- Fri Dec 10, 2021 8:38 pm
- Forum: ESP32 boards
- Topic: Partitions-ota.csv change error
- Replies: 5
- Views: 5374
Re: Partitions-ota.csv change error
Offset 0x1ff700 is not aligned to 0x10000
Code: Select all
ota_1, app, ota_1, 0x1ff700, 0x1ef700,
- Fri Nov 26, 2021 12:35 am
- Forum: Development of MicroPython
- Topic: Interacting with files
- Replies: 2
- Views: 11128
- Tue Nov 02, 2021 6:23 pm
- Forum: ESP32 boards
- Topic: Display hershey vector font on ST7789
- Replies: 10
- Views: 4513
Re: Display hershey vector font on ST7789
Many of the cheap ST7789 modules do not have a MISO pin or it is not connected to anything. Module that do have a MISO pin require using a modified software SPI since the reads require an extra dummy clock cycle. Reading the frame buffer can be done, but only in 18 bit color mode making the process ...
- Mon Nov 01, 2021 4:14 pm
- Forum: ESP32 boards
- Topic: Display hershey vector font on ST7789
- Replies: 10
- Views: 4513
Re: Display hershey vector font on ST7789
Reading from st7789 display modules is complicated by the SDA line being bidirectional and that appears not to be compatible with hardware SPI (https://www.avrfreaks.net/forum/st7735- ... y-over-spi). Bit banging the read is reported to work, but it is slow.
- Sun Oct 31, 2021 6:29 am
- Forum: ESP32 boards
- Topic: Display hershey vector font on ST7789
- Replies: 10
- Views: 4513
Re: Display hershey vector font on ST7789
I'm thinking of creating a method that would allow you to crop a blittable bitmap from a jpg. You could use the bitmap to restore the background behind a digit before drawing the new digit. # # Completely untested code: the jpg_crop method does not exist yet. # # draw the background tft.jpg("backgro...