Originally shared by Jeremy Spencer Thanks to Jason Coon ,

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Originally shared by Jeremy Spencer

Thanks to @Jason_Coon , the Evil Genius Labs WeMos D1 Mini smart LED level shifter shields are now available in the UK and Europe.
http://www.ebay.co.uk/itm/Evil-Genius-Labs-Wemos-D1-Mini-ESP8266-LED-Level-Shifter-Shield-/272670862672?ssPageName=STRK:MESE:IT

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Great, good news!

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It says this uses the SN74HCT245N and it supports driving APA102 pixels? Whats the maximum drive frequency 74HCT245N, i htought it was under 1Mhz

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I’ll check the data sheet, but I drive SK9822s at 24Mhz with them

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@Jeremy_Spencer really??? are you 100% sure you are driving them at that frequency?

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Mormmg, @Leon_Yuhanov , yes I am pretty sure :slight_smile:

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http://happyinmotion.com/?p=1247

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@Jeremy_Spencer thanks im going to have to try them. I always thought they were for under 1MHZ operation

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@Leon_Yuhanov , the data sheet doesn’t state a maximum frequency, it states typical transition times and delays. If I’m reading it correctly, the propagation delay across the chip is typically about 10 nanoseconds. That’s a lot of hz (1e-8), which seems too many. But definitley much more than 24000. I think it’s 100,000 Mhz, but I’m happy to be corrected.

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Thanks @Leon_Yuhanov , I’ve used the same level shifter with a Tennsy3.2 and the SPI output which I’ve believe has a genuine maximum speed of 24Mhz.