LichtKrant

Project LichtKrant
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Een korte inleidende tekst
Status	Initializing
Contact	bertrik
Last Update	2019-12-13

Introduction

Found this lichtkrant on the revspace free stuff table.

Hardware

It consists of a processor board and a LED board.

processor board

The processor board has a 8052, a flash chip, battery, 32768 Hz crystal, 40 MHz crystal, Altera Max chip. It appears the Altera chip drives two 245 chips which in turn drive the signal to the connector between the two boards.

Connector pinout J1:

• 1: pin A8 of IC6 (245)
• 2: GND?
• 3: pin A1
• 4: GND
• 5: pin A2
• 6:
• 7: pin A3
• 8:
• 9: pin A4
• 10:
• 11: pin A5
• 12:
• 13: pin A6
• 14:
• 15: pin A7
• 16:
• 17: pin A8
• 18:
• 19: 5V
• 20: 5V

So it basically looks like a 9 bit bus. Levels on the bus are 5V (so can we drive it with an ESP?)

LED board

The LED board contains the actual display blocks.

It consists of 16 blocks of 5x7 LEDs.

The are already electronics on it, consisting mostly of 595 chips (serial shift registers).