deʃhipuI'm waiting for the parts for the first "production" batch of the PewPew Lite boards — just around 20-30 of them, to sell on Tindie. The LED matrices just arrived from the usual Aliexpress seller, and I decided to use one in an older prototype. Turns out that a green LED in one of the corners is dead.
Since the pins are responsible for whole rows or columns, it can't be a bad connection. That really made me nervous, so I quickly assembled a testing rig for those matrices and tested all 30 of them:
I found one more faulty matrix, this time one pixel is noticeably darker than the others. All the other matrices seem to be fine. Caveat emptor.
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Nice project. Made In China 's fault.
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I wouldn't say it's their fault. They intentionally skip the quality control stop to make the products cheaper, and that's a tradeoff I agree to implicitly when ordering the cheapest offer. If anything, the fault is mine, for not testing the parts previously.
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I'm a bit confused, is the PewPew Lite basically a Wemos D1 mini shield?
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because the page before it's a feather wing o.O
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The PewPew Lite is a FeatherWing. This is an earlier prototype using a D1 Mini to run CircuitPython, which I have abandoned, because it requires you to install drivers, doesn't show up as a USB drive and doesn't have a battery charger circuit — so it's less suitable for the particular use cases that I have in mind.
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