Stephen C.
The Waveshare display is crystal clear, low power and of course stays visible when power is removed. The support library for Python was easily integrated into my code. One feature I am using is displaying QR codes generated on the fly in Python for secure WiFi access (WiFi Hotspot pass code is unique for each session). Even using QR codes at a resolution of 1 pixel per point, the scan on my phone worked flawlessley. The trade off with e-ink displays is update or refresh rate, though the example does have a 'partial update' example based around a digital clock. The unit plugs into the header on the Raspberry Pi. Though the external connector on the PCB means no heatsink on the CPU! With some "surgery", the connector is readily removed with some soldering skills if a heat sink is required (or a slimmer PiZero desired). Of course such modification would probably invalidate any warranty! Its as clear as the photograph shows and easy to work with. If using the python library examples this code snippet will inver the image.... image=image.transpose(Image.ROTATE_180) place it just before the line(s) epd.display(epd.getbuffer(image)) Additional font sizes are easily accessed e.g. font12 = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 12) Reference font12 when drawing text replacing the font 15 or 24 in the examples The attached photo is one of the test bit maps loaded on the display.
4 months ago
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