Edgar Allan Poe’s “The Raven” describes purple curtains.

This is a purple PoE-powered puller for curtains!

A reproduction of the SHVC-1L5B-20 PCB used in some SA1 games. Perfect for Gradius III SA1 conversions, provided you can source an SA1 chip.

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Please see https://github.com/makhowastaken/iG-LiPo-Battery-Gauge for more info. Goes nicely with https://oshpark.com/shared_projects/lczB1jHZ

Slightly tweaked version of the LED board from https://github.com/insidegadgets/LiPo-Battery-Gauge to fit with OSHpark’s minimum size requirements. Please see https://github.com/makhowastaken/iG-LiPo-Battery-Gauge for more info. Goes nicely with https://oshpark.com/shared_projects/5IOiieSn

Solar Tracking Head V5

hc05-rn42_evaluation-kit

sma-probetarget_oshpark_bve_v0_4_16Feb2020

This version use SMA Connectors (up to 26.5GHz) BELFUSE 142-0771-831

Link: https://belfuse.com/product/part-details?partn=142-0771-831

Swaps dataline 0 and 1 to fix the reversed grayscales for the first Chinese/HHL DMG IPS replacement screens.

https://www.youtube.com/watch?v=cFpnUGuXtbY

A low cost, low-part-count board that, together with the Teensy 4.0, exposes the full capabilities of the ADS1299 chip. Arduino software available here.. Modified from Paul Stoffregen’s Biopotential Library reference hardware

V6

famously assembled at TAMI hackerspace. see https://github.com/telavivmakers/at-tami

http://tandy.wiki/REX
Updated to fit new slightly smaller carrier.
https://github.com/bkw777/pcb2molex8878/tree/loose_fit

The RC2014 Z80 needed to have a fast multiply, and this is it.

design discussion on RC2014 forum

This 128kByte look-up table (LUT) Module allows the RC2014 to directly look up a 16-bit result at a 16-bit address.

The first application for the LUT Module is for an 16-bit result from a 8-bit x 8-bit multiply. It takes 61 clock cycles to return the result, and this is approximately 5 times faster than a shift-add multiply and 2.5 times faster than the best table multiply software routine.

The LUT Module can also hold other tables, including SINE or LOG / LN to 16-bit accuracy, CRC results, or other pre-calculable tables that need to be read quickly.

To multiply Register H by Register L, and return the result in HL, preserving all registers except BC.

mul_hl:
    ld b,h ; 4 multiplier to B
    ld c,0x40 ; 7 operand latch address
    out (c),l ; 12 multiplier from B, multiplicand from L
    in l,(c) ; 12 result LSB to L
    inc c ; 4 result MSB address
    in h,(c) ; 12 result MSB to H
    ret ; 10