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Project Notes

#284 TheGent

The Gent is Boldport Club Project #10 - a simple circuit on a beautiful board

Build

Notes

Unboxing and Parts

Ref	Item	Count
S1	DPDT slide switch, C&K JS202011SCQN	x1
D1	5mm phototransistor, Kingbright PT333-3C	x1
L1,3,5	Green 5mm LED, Kingbright L-9294CGCK	x3
L2,4	Orange 5mm LED, Kingbright L-9294SECK	x2
	CR2032 battery clip, Multicomp BC-2001	x1
Q1	N-channel MOSFET, Fairchild 2N7000	x1
R1-8	390Ω through-hole resistor, Multicomp MCF 0.25W 10K	x8
R9	820Ω through-hole resistor, Multicomp MF25 820R	x1
R10	10KΩ through-hole resistor, Multicomp MF25 390R	x1

kit_unboxing

The five clear LEDs are actually two colours: a perfect time to whip out the LIGEMDIO project for some LED testing:

kit_testing_leds_with_ligemdio

Phototransistor Connections

Note that the PT333-3C Phototransistor uses a familiar 5mm LED packaging, but the collector/emitter pins are the reverse of what you might intuit. The short leg and flat edge are actually the collector and is connected to the positive supply side.

PT333-3C

Completed Build

kit_complete

Build

Schematic

Breadboard

Schematic

Credits and References

TheGent - in the Boldport shop
TheGent - Boldport project page
TheGent - OSH files on GitHub
TheGent - club community site, packed with resources for the project
Eurocircuits - manufactured the board
PT333-3C datasheet
..as mentioned on my blog

About LEAP#284 BoldportPCB DesignBugs

Project Source on GitHub Return to the LEAP Catalog

LEAP is just my personal collection of electronics projects - usually involving an Arduino or other microprocessor in one way or another. Some are full-blown projects, while many are trivial breadboard experiments, intended to learn and explore something interesting.

Projects are often inspired by things found wild on the net, or ideas from the many great electronics podcasts and YouTube channels. Feel free to borrow liberally, and if you spot any issues do let me know (or send a PR!). See the individual projects for credits where due.

For a while I have also included various scale modelling projects here too, but I've now split those off into a new repository. Check out LittleModelArt if you are looking for the modelling projects!

Project Gallery Notebook LittleCodingKata LittleModelArt More on my blog