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1# Tattlekey
2
3This is a one-key WiFi UDP 'keyboard'.
4
5The hardware is a Raspberry Pi Pico W in a 3d-printed shell connected
6to a Cherry MX key switch.
7
8The client software that runs on the device connects to a WiFi network
9and sends UDP packets to an address specified in `client/config.c`.
10It transmits each keypress several times for reliability, with relative
11timestamps so the server can determine the time of every press without
12the device needing to synchronize a clock.
13
14The server software collects, logs, and de-duplicates keypress reports.
15
16The housing grips the pico by the edges through spring force; you'll need
17to squeeze the housing flat (eg: with a clamp) to deform it slightly to
18allow the pico board to slide in and out easily. Note that the housing is
19subtly _not symmetrical_: There is a top and a bottom. Do not force the
20pico board in upside down or you will destroy the board's bootsel button.
21
22![The tattlekey 'keyboard'](tattlekey/blob_plain/HEAD:/docs/tattlekey.jpg)