displays
7 pages across tutorials, modules, pinouts and guides.
0.56-inch 7-Segment Digits with a 74HC595 Driver Board
A 24-pack of 0.56" seven-segment digits and twelve 74HC595 driver boards: three wires instead of eight, which digit is common cathode and which is common anode, how the ten pins line up, and the current limit that bites on 8.
10-Segment LED Bar Graph Display
Ten independent LEDs in one 20-pin package, with a resistor board that puts 220 Ω in front of each. Which way round it goes, why LOW lights a segment, and what ten of them at once costs an Arduino.
1602 I²C LCD Display Module, 16×2 Blue
A 16 × 2 character display with the I²C chip on the board rather than on a backpack. Four wires, address 0x27 by default, three solder pads to change it, and a contrast trimmer that explains most blank screens.
32x8 LED Matrix with MAX7219, 3-Pack
Four 8x8 squares in one strip, 256 LEDs, three signal wires. What the pads are called, why the sketch has to say four, and what to do about a 3.3 V board on a chip that wants 3.5 V.
MAX7219 Vintage Tube LED Clock Kit
Eight 0.28-inch digits on a MAX7219, in a glass tube with a cork. Three displays arrive built and three arrive as pieces — a driver board and two four-digit panels, in red or blue, with a colon or with decimal points.
8x8 LED Matrix
Sixty-four red LEDs and a MAX7219 that scans them for you, on the TinkerBlock TK52: five wires, VCC on 5 V, a picture sent as eight bytes. The page is shared with the chainable 3-pack module, and only that one can be chained: the TK52 has no DOUT.
TM1637 4-Digit Display (0.56 inch)
Four seven-segment digits on two ordinary pins. The TinkerBlock TK51 with its clock colon, the clock set, the digit set with decimal points, and the one bit that behaves differently on each.