TOOOLE
About the TOOOLE PCB
TOOOLE is an open source PCB design by schlae, published on GitHub. It is a 2-layer board measuring 16 × 27.7 mm, with 7 components from 7 distinct parts.
Other key parts include the DG412xUE, SN74AHCT157PWR and 74LS157. By type, the board carries 3 ICs, 1 transistor, 1 connector, 1 capacitor and 1 resistor.
It belongs with the test & measurement designs in this gallery.
From the project
FLOOB TOOOLE - Replacement for Fluke 100073
So I cloned the chip using a simple circuit that fits on a tiny circuit board. The new design uses any off-the-shelf DG412 or equivalent (industry standard pinout). To implement a 4-bit transparent latch, the design uses a 74157 quad 2-input mux with one set of inputs connected to the data coming in and the other set of inputs connected to the outputs of the mux to recirculate the data and latch it.
Main components on the TOOOLE
TOOOLE bill of materials (BOM)
7 components, 7 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | DG412xUE | TSOP65P640X110-16 | U1 |
| 1 | SN74AHCT157PWR | TSOP65P640X110-14 | U2 |
| 1 | 74LS157 | TSOP65P640X110-16 | U3 |
| 1 | 2N7002 | SOT95P230X117-3 | Q1 |
| 1 | Conn_02x10_Counter_Clockwise | DIP20 | J1 |
| 1 | 0.1uF | CAPC1608X100 | C1 |
| 1 | 1K | RESC1608X55 | R1 |
TOOOLE design files
The KiCad project lives in the schlae/TOOOLE repository on GitHub; these links point at the commit this page was built from.
- LayoutTOOOLE.kicad_pcb
- SchematicTOOOLE.kicad_sch
TOOOLE: common questions
How big is the TOOOLE PCB?
The TOOOLE measures 16 × 27.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the TOOOLE?
7 components, from 7 distinct parts. The full bill of materials is listed on this page.
Where can I download the TOOOLE design files?
From the schlae/TOOOLE repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the TOOOLE design in my own project?
The repository has no license, so all rights stay with schlae. Use it as a reference, and ask the author before reusing the design.
Similar boards
LevelShifter
gusmanb
28.3 × 39.8 mm21 parts2LGPL-3.05.0k
StackLink
52.3 × 10.5 mm5 parts2LGPL-3.05.0k
AnalyzerBoxPCB fork
52.7 × 47.9 mm54 parts4LGPL-3.05.0k
EleLab v2 Bus100
Chrismettal
100 × 100 mm37 parts2LGPL-3.0528
EleLab v2 Bus150
150 × 50 mm37 parts2LGPL-3.0528
EleLab v2 PowerFeed
68 × 50 mm11 parts2LGPL-3.0528