Typeframe PX-88

by Jeff Merrick · Hard · manifest draft — being verified

A portable Raspberry Pi 4 writerdeck with a detachable 65% mechanical keyboard, a wide 7.9-inch DSI touchscreen and an internally managed 10,000mAh battery.

Jeff Merrick designed the Typeframe PX-88 as a modern, distraction-reduced writing computer inspired by the Epson PX-4. The official repository publishes a detailed BOM, illustrated assembly guide, software setup and tolerance-specific STL/3MF enclosure sets.

Original: github.com, github.com, github.com

Parts

Qty	Part	Buy
1×	MK Point65 65% keyboard PCB PX-88 BOM names the multi-layout MK Point65 PCB; RGB version is described as a possible alternative.	Amazon (budget)
1×	MK Point65 S11 USB daughterboard Exact daughterboard named in the official BOM.	Amazon (budget)
1×	Durock V2 PCB-mount stabilizer kit PCB-mount stabilizer kit linked by the creator.	Amazon (budget)
70×	Cherry MX2A Blue 5-pin switches Creator links MX2A Blue but permits other MX-compatible 5-pin switches.	Amazon (budget)
70×	DSA Dolch MX-compatible keycaps Creator links DSA Dolch and documents the nonstandard modifier sizes needed.	zFrontier Amazon (budget)
1×	Adafruit short USB-C to USB-A cable 4472 Short internal cable from the keyboard daughterboard to the Pi.	Adafruit
1×	Waveshare 7.9-inch DSI LCD Exact screen named in the official BOM.	Waveshare
1×	500mm Raspberry Pi DSI ribbon cable Official BOM specifies a 500mm DSI-compatible ribbon.	Amazon (budget)
1×	Adafruit female-to-male jumper wires 1954 One pack supplies four display extensions plus jumpers for the switch and status LED; official BOM does not give a pack count.	Adafruit
1×	Raspberry Pi 4 Model B Official BOM specifies Raspberry Pi 4 Model B with at least 4GB RAM.	PiShop.us PiShop.us Amazon (budget)
1×	SanDisk Extreme PRO 64GB microSDXC card Compatible reputable microSD choice; the creator specifies a quality card of at least 32GB but does not require this exact model.	Micro Center Amazon (budget)
1×	3.7V 10,000mAh 1S LiPo battery with JST-PH 2.0 Official BOM specifies 1S 3C or higher, JST-PH 2.0 and no more than about 11mm thickness.	Amazon (budget)
1×	200mm JST-PH 2.0 two-pin extension cable Exact length and connector format named in the BOM.	Amazon (budget)
1×	Waveshare Power Management HAT (B) Exact power HAT named and linked in the BOM.	Waveshare
1×	CR1220 lithium coin cell optional Creator installed this RTC cell but questions whether it is strictly necessary.	DigiKey Amazon (budget)
1×	KCD3 SPST momentary rocker switch Required action is momentary; creator warns the original listing no longer appears to offer it.	Amazon (budget)
1×	150 ohm resistor Approximately 150 ohms, as specified for the status LED.	DigiKey
1×	Adafruit 5mm green LED 4203 5mm green status LED linked by the creator.	Adafruit
1×	PX-88 M3 self-tapping screw set Aggregate set records all six M3 lengths and quantities in the official BOM.	Amazon (budget)
4×	M3 flat washer optional Official BOM marks washers optional and says they were used for PCB mounting.	Newark
4×	M2.5 screw Official BOM specifies four M2.5×12mm screws; verify the purchased screws are 12mm long.	Newark
1×	Overture matte beige PLA filament Creator-recommended filament; quantity is not stated in the BOM.	Micro Center Amazon (budget)
1×	Heat-resistant tape Official BOM calls for tape to secure the battery; quantity is not stated.	Amazon (budget)

Printed parts

PX-88 printed enclosure, keyboard shell and hinge set — Official repository provides tight-tolerance 3MF/STL sets, loose-tolerance STL sets and Fusion/STEP sources. Hardware and print files are CC BY-NC-SA 4.0: attribution, noncommercial use and share-alike terms apply; prints may not be sold under this license.

Notes

Official README, BOM, electronics guide, print-file tree and project license checked on 2026-10-18. Kept as draft because the creator allows substitutions for switches and keycaps, does not specify resistor tolerance or power rating, no longer has a live exact listing for the required momentary switch, and does not state consumable quantities.

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