MicroPython Forum (Archive)

I should still have a handful of boards left. Private message me.

See: https://github.com/russhughes/st7789_mpy/issues/56

A Sailwench servo might work for you. They have rotations of 360° or more.

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);...

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, ...

Offset 0x1ff700 is not aligned to 0x10000

The partition start address must end with "0000" so 0x20000 would work.

I've been using Dave Hylands mpfile.c and mpfile.h code.

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 ...

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.

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...